{"title":"Hydroboost Kit Sale","description":null,"products":[{"product_id":"hydroboost-brake-kit-wilwood-compact-master-cyliner","title":"WOD Compact HydroBoost Brake Kit w\/ Wilwood Compact Master Cylinder","description":"\u003cp\u003e\u003cstrong\u003eThe Wide Open Design Wilwood HydroBoost Brake System\u003c\/strong\u003e is a high-performance braking solution engineered for heavy off-road rigs, rock crawlers, Ultra4 race cars, and custom tube chassis builds. By combining a \u003cstrong\u003ecompact Wilwood 1-1\/8\" tandem master cylinder\u003c\/strong\u003e with a powerful hydraulic-assist HydroBoost unit, this system delivers exceptional stopping power and a consistent pedal feel for vehicles running large tires, one-ton axles, and full hydraulic steering.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for custom fabrication, this compact \"short version\" HydroBoost system saves valuable firewall and engine bay space while simplifying brake plumbing. Each HydroBoost unit is modified in-house with -8 AN flow and return fittings for improved reliability and easier integration into custom hydraulic steering systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWilwood 1-1\/8\" Bore Compact Tandem Master Cylinder with brake fittings\u003c\/li\u003e\n\u003cli\u003eWide Open Design Modified HydroBoost Unit with -8 AN Flow \u0026amp; Return Fittings\u003c\/li\u003e\n\u003cli\u003eUniversal Steel Mounting Bracket\u003c\/li\u003e\n\u003cli\u003eWide Open Design Adjustable Pedal Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Add-On:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/hydroboost-brake-light-switch-kit\"\u003e\u003cstrong\u003eWOD HydroBoost Brake Light Switch Kit\u003c\/strong\u003e\u003c\/a\u003e – Bolt-on adjustable brake light activation kit designed specifically for this HydroBoost system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Assist Type\u003c\/td\u003e\n\u003ctd\u003eHydroBoost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydroBoost Fittings\u003c\/td\u003e\n\u003ctd\u003e-8 AN Flow \u0026amp; Return\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder\u003c\/td\u003e\n\u003ctd\u003eWilwood Compact Tandem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Bore\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eBlack E-Coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 3 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Flange Compatibility\u003c\/td\u003e\n\u003ctd\u003e3.22\"–3.40\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Bracket\u003c\/td\u003e\n\u003ctd\u003eUniversal Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePedal Assembly\u003c\/td\u003e\n\u003ctd\u003eAdjustable Front-to-Back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHydraulic-Assisted Brake Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Fitment for Custom Fabrication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTube chassis builds\u003c\/li\u003e\n\u003cli\u003eRock crawlers\u003c\/li\u003e\n\u003cli\u003eRock bouncers\u003c\/li\u003e\n\u003cli\u003eUltra4 race cars\u003c\/li\u003e\n\u003cli\u003ePrerunners\u003c\/li\u003e\n\u003cli\u003eLS engine swaps\u003c\/li\u003e\n\u003cli\u003eLT engine swaps\u003c\/li\u003e\n\u003cli\u003eCompetition off-road vehicles\u003c\/li\u003e\n\u003cli\u003eCustom hydraulic steering systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for HydroBoost brake systems.\u003c\/li\u003e\n\u003cli\u003eRequires a compatible hydraulic power steering pump.\u003c\/li\u003e\n\u003cli\u003eVerify steering pump output, brake line routing, and pedal geometry before installation.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eTech Insight\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ch3\u003eWhy choose HydroBoost instead of a vacuum booster?\u003c\/h3\u003e\n\u003cp\u003eHydroBoost systems use hydraulic pressure from the power steering pump instead of engine vacuum. This provides significantly more braking force and consistent pedal feel, especially on vehicles equipped with large tires, aggressive camshafts, or full hydraulic steering.\u003c\/p\u003e\n\u003ch3\u003eWhy is this ideal for off-road vehicles?\u003c\/h3\u003e\n\u003cp\u003eHeavy rock crawlers and race vehicles often operate at low engine RPM or with aggressive camshafts that produce very little vacuum. HydroBoost maintains consistent brake assist regardless of engine vacuum, making it a proven solution for extreme off-road conditions.\u003c\/p\u003e\n\u003ch3\u003eWhat are the advantages of the Wilwood compact master cylinder?\u003c\/h3\u003e\n\u003cp\u003eThe Wilwood Compact Tandem Master Cylinder reduces weight while saving valuable firewall space. Its compact design simplifies plumbing and makes installation easier in tight tube chassis, buggy, and LS swap engine compartments.\u003c\/p\u003e\n\u003ch3\u003eWho is this system designed for?\u003c\/h3\u003e\n\u003cp\u003eThis HydroBoost kit is ideal for rock bouncers, Ultra4 race cars, custom tube chassis builds, LS and LT engine swaps, Jeeps running one-ton axles, and any off-road vehicle requiring maximum braking performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wide Open Design","offers":[{"title":"Default Title","offer_id":56214553329830,"sku":"WA01008-WS","price":859.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WA01008-WS-Hydroboost-Brake-Kit-Wilwood-Compact-1_d8b957b8-e65d-45b4-8466-4796f40210ce.jpg?v=1788280871"},{"product_id":"hydroboost-brake-kit-wilwood-master-cylinder","title":"WOD HydroBoost Brake Kit w\/ Wilwood Master Cylinder","description":"\u003cp\u003e\u003cstrong\u003eThe WOD HydroBoost Brake Kit with Wilwood Master Cylinder\u003c\/strong\u003e is engineered to deliver powerful, consistent braking performance for off-road vehicles running large tires, heavy axles, and demanding suspension systems. By using hydraulic pressure from your power steering pump instead of engine vacuum, this HydroBoost system provides significantly more brake assist than traditional vacuum boosters—making it an ideal upgrade for LS swaps, rock crawlers, Ultra4 race cars, and custom tube chassis builds.\u003c\/p\u003e\n\u003cp\u003eEach kit includes a lightweight\u003cstrong\u003e Wilwood 1-1\/8\" bore aluminum master cylinder\u003c\/strong\u003e, an in-house modified HydroBoost unit with -8 AN flow and return fittings, a universal mounting bracket, and a fully adjustable pedal assembly. The result is a compact, high-performance braking package that improves pedal feel, simplifies plumbing, reduces weight, and provides reliable stopping power in the harshest off-road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWilwood Aluminum Master Cylinder (1-1\/8\" Bore)\u003c\/li\u003e\n\u003cli\u003eBrake Line Fittings\u003c\/li\u003e\n\u003cli\u003eWOD Modified HydroBoost Unit with -8 AN Flow \u0026amp; Return Fittings\u003c\/li\u003e\n\u003cli\u003eUniversal Steel Mounting Bracket\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eFabricated Adjustable Pedal Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Add-On:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/hydroboost-brake-light-switch-kit\"\u003e\u003cstrong\u003eWOD HydroBoost Brake Light Switch Kit\u003c\/strong\u003e\u003c\/a\u003e – Bolt-on adjustable brake light activation kit designed specifically for this HydroBoost system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eWide Open Design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Assist Type\u003c\/td\u003e\n\u003ctd\u003eHydroBoost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder\u003c\/td\u003e\n\u003ctd\u003eWilwood Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Bore\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydroBoost Fittings\u003c\/td\u003e\n\u003ctd\u003e-8 AN Flow \u0026amp; Return (In-House Modified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Bracket\u003c\/td\u003e\n\u003ctd\u003eUniversal Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePedal Assembly\u003c\/td\u003e\n\u003ctd\u003eAdjustable Front-to-Back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Weight\u003c\/td\u003e\n\u003ctd\u003eApproximately 3 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Material\u003c\/td\u003e\n\u003ctd\u003eHigh-Pressure Die-Cast Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Stroke\u003c\/td\u003e\n\u003ctd\u003e1.10\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume Ratio\u003c\/td\u003e\n\u003ctd\u003e2:1 Primary to Secondary Chambers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet Ports\u003c\/td\u003e\n\u003ctd\u003eDual-Side Fluid Outlet Ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Flange Compatibility\u003c\/td\u003e\n\u003ctd\u003e3.22\"–3.40\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Fitment for Custom Fabrication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRock crawlers\u003c\/li\u003e\n\u003cli\u003eRock bouncers\u003c\/li\u003e\n\u003cli\u003eUltra4 race cars\u003c\/li\u003e\n\u003cli\u003ePrerunners\u003c\/li\u003e\n\u003cli\u003eTube chassis builds\u003c\/li\u003e\n\u003cli\u003eLS engine swaps\u003c\/li\u003e\n\u003cli\u003eLT engine swaps\u003c\/li\u003e\n\u003cli\u003eCustom off-road vehicles\u003c\/li\u003e\n\u003cli\u003eCompetition race vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for HydroBoost brake systems using hydraulic power steering pressure.\u003c\/li\u003e\n\u003cli\u003eRequires a compatible power steering pump and hydraulic plumbing.\u003c\/li\u003e\n\u003cli\u003eVerify pedal ratio, brake line routing, and steering system compatibility before installation.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eTech Insight\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ch3\u003eWhat is HydroBoost?\u003c\/h3\u003e\n\u003cp\u003eHydroBoost uses hydraulic pressure from the power steering pump to provide brake assist instead of engine vacuum. This results in greater braking force and consistent pedal feel, especially on vehicles with large tires or low engine vacuum.\u003c\/p\u003e\n\u003ch3\u003eWhy is HydroBoost better than a vacuum booster?\u003c\/h3\u003e\n\u003cp\u003eVacuum boosters depend on engine vacuum, which can be limited on engines with aggressive camshafts or under heavy throttle. HydroBoost maintains strong brake assist regardless of engine vacuum, making it the preferred choice for off-road and high-performance applications.\u003c\/p\u003e\n\u003ch3\u003eWhy use a Wilwood master cylinder?\u003c\/h3\u003e\n\u003cp\u003eThe lightweight aluminum Wilwood master cylinder weighs approximately 75% less than many factory cast-iron units while providing excellent pedal feel, flexible plumbing with dual outlet ports, and reliable performance in custom chassis builds.\u003c\/p\u003e\n\u003ch3\u003eWho should use this kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is ideal for vehicles running 40-inch or larger tires, one-ton axles, full hydraulic steering, LS engine swaps, Ultra4 race cars, rock bouncers, trail rigs, and other heavy off-road vehicles that require increased braking performance.\u003c\/p\u003e\n\u003ch3\u003eDoes this require a power steering pump?\u003c\/h3\u003e\n\u003cp\u003eYes. HydroBoost systems rely on hydraulic pressure from the power steering pump to generate brake assist. Proper plumbing, pump output, and steering system configuration are critical for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wide Open Design","offers":[{"title":"Default Title","offer_id":56214553723046,"sku":"WA01008-W","price":764.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WA01008-W-Hydroboost-Brake-Kit-Wilwood-Master-Cylinder-1_ac2d8903-80c0-4529-9c26-087232a0bd37.jpg?v=1788280762"},{"product_id":"gm-hydroboost-brake-kit","title":"WOD GM HydroBoost Brake Kit w\/ OE Master Cylinder","description":"\u003cp\u003eThe \u003cstrong\u003eWide Open Design GM HydroBoost Brake Kit\u003c\/strong\u003e delivers the braking force needed for serious off-road vehicles where traditional vacuum boosters simply can't keep up. Designed for rock crawlers, Ultra4 race cars, tube chassis builds, and LS-powered swaps, this hydraulic brake assist system uses power steering pressure instead of engine vacuum to provide powerful, consistent brake assist—even with aggressive camshafts, large tires, and full hydraulic steering.\u003c\/p\u003e\n\u003cp\u003eEach HydroBoost unit is modified in-house with optimized internal flow and -8 AN ports for improved plumbing, increased reliability, and easier installation. Combined with a 1-1\/8\" bore master cylinder, fabricated pedal assembly, and weld-on mounting system, this kit provides a complete braking solution capable of controlling heavy rigs equipped with one-ton axles, portal axles, and 40\"+ tires.\u003c\/p\u003e\n\u003ch4\u003eIncludes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eModified GM HydroBoost Unit\u003c\/li\u003e\n\u003cli\u003e1-1\/8\" Bore GM Master Cylinder\u003c\/li\u003e\n\u003cli\u003eBrake Line Fittings\u003c\/li\u003e\n\u003cli\u003eFabricated Adjustable Pedal Assembly\u003c\/li\u003e\n\u003cli\u003eUniversal Weld-On Tube Mounts \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Add-On:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/hydroboost-brake-light-switch-kit\"\u003e\u003cstrong\u003eWOD HydroBoost Brake Light Switch Kit\u003c\/strong\u003e\u003c\/a\u003e – Bolt-on adjustable brake light activation kit designed specifically for this HydroBoost system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGM HydroBoost Brake System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Assist Type\u003c\/td\u003e\n\u003ctd\u003eHydraulic (Power Steering Driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster Cylinder Bore\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydroBoost Ports\u003c\/td\u003e\n\u003ctd\u003eModified In-House with -8 AN Flow \u0026amp; Return\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePedal Assembly\u003c\/td\u003e\n\u003ctd\u003eWide Open Design Fabricated Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePedal Adjustment\u003c\/td\u003e\n\u003ctd\u003eFront-to-Back Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eUniversal Weld-On Tube Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Type\u003c\/td\u003e\n\u003ctd\u003eOff-Road Competition \u0026amp; Custom Builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLS engine swaps\u003c\/li\u003e\n\u003cli\u003eRock crawlers\u003c\/li\u003e\n\u003cli\u003eUltra4 race vehicles\u003c\/li\u003e\n\u003cli\u003eRock bouncers\u003c\/li\u003e\n\u003cli\u003eTube chassis builds\u003c\/li\u003e\n\u003cli\u003eTrail rigs\u003c\/li\u003e\n\u003cli\u003eCompetition off-road vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires hydraulic power steering pump.\u003c\/li\u003e\n\u003cli\u003eCompatible with hydro-assist and full hydraulic steering systems.\u003c\/li\u003e\n\u003cli\u003eHydraulic plumbing must be properly sized and routed.\u003c\/li\u003e\n\u003cli\u003eBrake line fabrication is required.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003cli\u003eVerify pedal ratio before final welding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ch3\u003eWhy choose HydroBoost instead of a vacuum booster?\u003c\/h3\u003e\n\u003cp\u003eHydroBoost uses hydraulic pressure from the power steering pump rather than engine vacuum. This provides consistent brake assist regardless of engine vacuum, making it ideal for LS engines with aggressive camshafts, forced induction, or low idle vacuum.\u003c\/p\u003e\n\u003ch3\u003eIs HydroBoost better for large tires?\u003c\/h3\u003e\n\u003cp\u003eYes. Vehicles equipped with 40-inch and larger tires require substantially more braking force than factory systems were designed to provide. HydroBoost significantly increases brake assist, reducing pedal effort while improving braking confidence.\u003c\/p\u003e\n\u003ch3\u003eWill HydroBoost work with full hydraulic steering?\u003c\/h3\u003e\n\u003cp\u003eAbsolutely. HydroBoost is commonly paired with hydro-assist and full hydraulic steering systems. Proper pump sizing, reservoir capacity, hose sizing, and steering system tuning are important to maintain both steering and brake performance.\u003c\/p\u003e\n\u003ch3\u003eWhy does WOD modify the HydroBoost unit?\u003c\/h3\u003e\n\u003cp\u003eOur HydroBoost units are modified in-house with -8 AN fittings and optimized internal flow. This simplifies plumbing, improves serviceability, and creates a cleaner installation compared to adapting factory metric fittings.\u003c\/p\u003e\n\u003ch3\u003eWhat power steering pump should I use?\u003c\/h3\u003e\n\u003cp\u003eFor demanding off-road applications, we recommend pairing this system with a properly sized PSC high-flow steering pump and remote reservoir. Adequate flow and reservoir capacity help maintain both steering and brake performance during extended low-speed crawling.\u003c\/p\u003e\n\u003ch3\u003eCan I run HydroBoost on a trail-only buggy?\u003c\/h3\u003e\n\u003cp\u003eYes. HydroBoost is one of the most common brake systems used on modern rock crawlers, Ultra4 cars, competition buggies, and custom off-road builds because it delivers powerful, repeatable braking even under the harshest operating conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wide Open Design","offers":[{"title":"Default Title","offer_id":56214554116262,"sku":"WA01008","price":671.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WA01008-Hydroboost-Brake-Kit-GM-Master-Cylinder-1_8de8bb7d-cd83-4c02-83dd-0a25fc177bd9.jpg?v=1788280750"},{"product_id":"hydroboost-brake-light-switch-kit","title":"WOD Hydroboost Brake Light Switch Kit","description":"\u003cp\u003eThe \u003cstrong\u003eWide Open Design Hydroboost Brake Light Switch Kit\u003c\/strong\u003e adds brake light functionality to Wide Open Design Hydroboost brake pedal assemblies. The switch and mounting bracket install directly at the top of the hydroboost pedal, providing a clean mechanical brake light trigger for custom off-road and tube chassis builds.\u003c\/p\u003e\n\n\u003cp\u003eThe adjustable switch position allows it to work throughout the pedal's adjustment range, so brake light activation can be set correctly for the final pedal position. This keeps the brake light system simple and tied directly to pedal movement without requiring a hydraulic pressure switch or a custom fabricated switch mount.\u003c\/p\u003e\n\n\u003ch4\u003eIncludes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Adjustable Brake Light Switch\u003c\/li\u003e\n\u003cli\u003e(1) Hydroboost Pedal Switch Mounting Bracket\u003c\/li\u003e\n\u003cli\u003eRequired Mounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable class=\"custom-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eWide Open Design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBrake Light Switch Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWOD Hydroboost Brake Pedal Assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Type\u003c\/td\u003e\n\u003ctd\u003eMechanical Pedal-Activated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Location\u003c\/td\u003e\n\u003ctd\u003eTop of Hydroboost Brake Pedal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eAdjustable Switch Position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eBrake Light Activation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eBolt-On\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eComplete Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eDesigned For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/hydroboost-brake-kits\"\u003eWide Open Design Hydroboost Brake Kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eWOD adjustable hydroboost brake pedal assemblies\u003c\/li\u003e\n\u003cli\u003eTube chassis builds\u003c\/li\u003e\n\u003cli\u003eRock crawlers and rock bouncers\u003c\/li\u003e\n\u003cli\u003eCustom off-road vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to mount at the top of the Wide Open Design hydroboost brake pedal.\u003c\/li\u003e\n\u003cli\u003eAdjustable switch position accommodates different brake pedal adjustment positions.\u003c\/li\u003e\n\u003cli\u003eSwitch position should be adjusted so the brake lights activate as the brake pedal begins to move.\u003c\/li\u003e\n\u003cli\u003eFinal wiring must be integrated into the vehicle's brake light circuit.\u003c\/li\u003e\n\u003cli\u003eVerify switch operation and brake light activation after final pedal adjustment.\u003c\/li\u003e\n\u003cli\u003eNot intended as a universal replacement switch for factory vacuum-booster pedal assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e\n\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" width=\"14\" height=\"14\"\u003e\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\n\u003cdiv class=\"details-content rte\"\u003e\n\n\u003ch3\u003eHow does the WOD Hydroboost brake light switch work?\u003c\/h3\u003e\n\u003cp\u003eThe switch is mechanically activated by movement of the brake pedal. When the pedal is pressed, the switch changes position to trigger the vehicle's brake light circuit.\u003c\/p\u003e\n\n\u003ch3\u003eWhy use a pedal-mounted switch instead of a hydraulic pressure switch?\u003c\/h3\u003e\n\u003cp\u003eA pedal-mounted switch activates based directly on brake pedal movement rather than waiting for hydraulic pressure to build. It also avoids adding another fitting or pressure switch into the brake hydraulic system.\u003c\/p\u003e\n\n\u003ch3\u003eWill the switch work if I adjust my brake pedal position?\u003c\/h3\u003e\n\u003cp\u003eYes. The mounting system is adjustable so the switch position can be set to match the final position of the WOD hydroboost brake pedal.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this kit include the wiring for my brake lights?\u003c\/h3\u003e\n\u003cp\u003eThe kit provides the brake light switch, mounting bracket, and mounting hardware. The switch must be connected to the vehicle's existing or custom brake light wiring during installation.\u003c\/p\u003e\n\n\u003ch3\u003eIs this a universal hydroboost brake light switch?\u003c\/h3\u003e\n\u003cp\u003eNo. This kit is designed around the Wide Open Design Hydroboost brake pedal assembly. It is not intended as a universal replacement for factory brake pedal or vacuum-booster switch systems.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003chr\u003e","brand":"Wide Open Design","offers":[{"title":"Default Title","offer_id":56214554345638,"sku":"WA01008-HBLS","price":63.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WA01008-HBLS-Hydroboost-Brake-Light-Switch-Kit-3.jpg?v=1789831462"}],"url":"https:\/\/wideopendesign.com\/collections\/hydroboost-kit-sale.oembed","provider":"Wide Open Design, Inc.","version":"1.0","type":"link"}