{"title":"Master Cylinders","description":"","products":[{"product_id":"wilwood-compact-tandem-master-cylinder-1-12in-bore-w-pushrod-black","title":"Wilwood Compact Tandem Master Cylinder (1-1\/8\" Bore)","description":"\u003cp\u003eThe Wilwood Compact Tandem Master Cylinder delivers a high performance, space saving solution for both manual and power-assisted brake systems. Designed with a lightweight high pressure die-cast aluminum body, this master cylinder weighs just 3 lbs, offering up to 75% weight savings compared to traditional cast iron OE units.\u003c\/p\u003e\n\u003cp\u003eThis 1-1\/8\" bore configuration is optimized for power brake applications, including vacuum-assist and hydraulic-assist systems. It features a tandem outlet design with ports on both sides of the bore, allowing flexible plumbing for custom builds. With a 1.10 stroke and a 2:1 primary to secondary volume ratio, it delivers balanced, predictable braking performance.\u003c\/p\u003e\n\u003cp\u003eAn integral dual reservoir keeps the package compact while maintaining adequate fluid capacity, making it ideal for tight engine bays in classic cars, trucks, off-road rigs, and race vehicles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Compact Tandem Master Cylinder\u003c\/li\u003e\n\u003cli\u003eIntegral dual reservoir\u003c\/li\u003e\n\u003cli\u003eBlack E-Coat finish\u003c\/li\u003e\n\u003cli\u003ePushrod not included. Proportioning valve kits sold separately.\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Type: Tandem Outlet\u003c\/li\u003e\n\u003cli\u003eBore Size: 1-1\/8\"\u003c\/li\u003e\n\u003cli\u003ePiston Area: 0.970 in²\u003c\/li\u003e\n\u003cli\u003eStroke: 1.10\"\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli\u003eFinish: Black E-Coat\u003c\/li\u003e\n\u003cli\u003eWeight: 3 lbs\u003c\/li\u003e\n\u003cli\u003eOutlets: (2)\u003c\/li\u003e\n\u003cli\u003eOutlet Size: 1\/2\"-20\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOutlet Fitment Options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\/8\"-24 Inverted Flare\u003c\/li\u003e\n\u003cli\u003e1\/2\"-20 Inverted Flare\u003c\/li\u003e\n\u003cli\u003e9\/16\"-18 Inverted Flare\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOverall Length: 7.16\"\u003c\/li\u003e\n\u003cli\u003eFlange to End Length: 6.55\"\u003c\/li\u003e\n\u003cli\u003eOverall Height (Bore Centerline to Top): 3.03\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReservoir Capacity:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFront \/ Rear: 7.8 oz \/ 4.7 oz\u003c\/li\u003e\n\u003cli\u003eVolume: 14.0 cu in \/ 8.5 cu in\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\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eDesigned for power brake systems (vacuum or hydraulic assist)\u003c\/li\u003e\n\u003cli\u003eMount flange spacing: 3.22\" – 3.40\" (common on most domestic cars \u0026amp; trucks mid-1960s to present)\u003c\/li\u003e\n\u003cli\u003ePorts available on both sides of the master cylinder body\u003c\/li\u003e\n\u003cli\u003eVerify bore size and outlet configuration based on brake system requirements.\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003eThe Compact Tandem Master Cylinder is ideal when space and weight matter. Its die-cast aluminum construction improves pressure handling while reducing mass, and the short 6.55\" flange-to-end length allows fitment in cramped engine compartments. Pairing this master cylinder with Wilwood’s combination proportioning valve kits simplifies plumbing and ensures proper front-to-rear brake bias.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":56165831377062,"sku":"WIL260-14960-BK","price":352.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WIL260-14960-Wilwood-Compact-Tandem-Master-Cylinder-1.jpg?v=1776886850"},{"product_id":"wilwood-high-volume-aluminum-master-cylinder-3-4in-bore","title":"Wilwood High Volume Master Cylinder (3\/4” Bore)","description":"\u003cp\u003eThe Wilwood High-Volume Aluminum Master Cylinder is engineered for demanding braking systems that require maximum fluid capacity, extended piston travel, and consistent pedal feel, especially when paired with large four- or six-piston calipers. \u003cmeta charset=\"utf-8\"\u003eUnlike traditional sand-cast master cylinders, Wilwood’s die-cast construction allows the bore to be finished without a stainless sleeve. This results in better heat dissipation, improved seal life, tighter tolerances, and reduced internal temperatures.\u003c\/p\u003e\n\u003cp\u003eWith a total fluid capacity of 8.2 ounces, this design provides at least 26% more fluid volume than most competing integral-reservoir master cylinders. A 1-7\/16 piston stroke delivers ample margin for high-displacement caliper systems. \u003cmeta charset=\"utf-8\"\u003eHeavy-duty internal return springs ensure fast piston retraction, while an internal slosh baffle maintains constant fluid supply during hard braking, acceleration, and cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Wilwood High-Volume Aluminum Master Cylinder\u003c\/li\u003e\n\u003cli\u003eIntegral reservoir with internal slosh baffle\u003c\/li\u003e\n\u003cli\u003eFormed steel lid with bellows-style gasket\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Type: Single Outlet\u003c\/li\u003e\n\u003cli\u003eBore Size: 3\/4 in\u003c\/li\u003e\n\u003cli\u003ePiston Area: 0.440 in²\u003c\/li\u003e\n\u003cli\u003eStroke: 1.43 in\u003c\/li\u003e\n\u003cli\u003eVolume: 0.62 cu in\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum body \/ Steel components\u003c\/li\u003e\n\u003cli\u003eFinish: Bare\u003c\/li\u003e\n\u003cli\u003eOutlet Count: 1\u003c\/li\u003e\n\u003cli\u003eOutlet Thread Size: 1\/8-27 NPT\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\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eDesigned for racing, off-road, and high-performance brake systems\u003c\/li\u003e\n\u003cli\u003eIdeal for use with large four- or six-piston calipers\u003c\/li\u003e\n\u003cli\u003eCommon mounting dimensions for flange or side mounting\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 1\/8-27 NPT brake fittings\u003c\/li\u003e\n\u003cli\u003eVerify bore size and system requirements before ordering.\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003eThe High-Volume Master Cylinder is purpose-built for extreme braking environments. Its die-cast aluminum bore eliminates the heat retention and wear issues found in stainless-sleeved sand-cast designs, while the increased fluid capacity helps prevent pedal fade during long events. The internal slosh baffle and heavy-duty return springs improve pedal consistency, speed up fluid recovery, and simplify bleeding—making this an excellent choice for endurance racing, off-road competition, and high-piston-count brake systems.\u003c\/p\u003e\n\u003cp\u003eReservoir Capacity\u003c\/p\u003e\n\u003cp\u003eReservoir Type: Integral\u003c\/p\u003e\n\u003cp\u003eCapacity: 8.2 oz\u003c\/p\u003e\n\u003cp\u003eVolume: 14.80 cu in\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":56165831573670,"sku":"WIL260-6764","price":76.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WIL260-6764-Wilwood-High-Volume-Aluminum-Master-Cylinder-3_4_Bore-1.jpg?v=1776798787"},{"product_id":"wilwood-high-volume-aluminum-master-cylinder-7-8in-bore","title":"Wilwood High Volume Brake Master Cylinder (7\/8\" Bore)","description":"\u003cp\u003eThe Wilwood High Volume Aluminum Master Cylinder (7\/8\" Bore) is engineered for high demand brake systems that require maximum fluid capacity, extended piston travel, and fast, consistent retraction. Built from high pressure die-cast, high grade aluminum, this master cylinder delivers superior heat dissipation, tight bore tolerances, and long seal life.\u003c\/p\u003e\n\u003cp\u003eWith an 8.2 oz integral reservoir, it provides at least 26% more fluid volume than most competing integral reservoir designs, which helps keep fluid temperatures lower and maintaining reserve during long events or high pad wear conditions. A 1-7\/16\" (1.43\") piston stroke offers extra margin for high displacement systems, while heavy duty internal return springs ensure fast piston retraction and improved pedal feel. Formed steel lids with bellows-style gaskets keep moisture out and pressure balanced.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Wilwood High Volume Aluminum Master Cylinder\u003c\/li\u003e\n\u003cli\u003eIntegral reservoir with internal slosh control\u003c\/li\u003e\n\u003cli\u003eFormed steel lid with bellows gasket\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Type: Single Outlet\u003c\/li\u003e\n\u003cli\u003eBore Size: 7\/8\"\u003c\/li\u003e\n\u003cli\u003ePiston Area: 0.600 in²\u003c\/li\u003e\n\u003cli\u003eStroke: 1.43\"\u003c\/li\u003e\n\u003cli\u003eVolume: 0.85 cu in\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum body \/ Steel components\u003c\/li\u003e\n\u003cli\u003eFinish: Bare\u003c\/li\u003e\n\u003cli\u003eOutlets: 1\"\u003c\/li\u003e\n\u003cli\u003eOutlet Thread Size: 1\/8\"-27 NPT\u003c\/li\u003e\n\u003cli\u003eReservoir Type: Integral\u003c\/li\u003e\n\u003cli\u003eCapacity: 8.2 oz\u003c\/li\u003e\n\u003cli\u003eVolume: 14.80 cu in\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\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eCommon dimensions for flange or side mounting\u003c\/li\u003e\n\u003cli\u003eIdeal for performance, racing, and off-road brake systems\u003c\/li\u003e\n\u003cli\u003eRecommended for setups using large piston calipers\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 1\/8\"-27 NPT brake fittings\u003c\/li\u003e\n\u003cli\u003eVerify bore size selection based on pedal ratio, caliper piston area, and desired pedal effort.\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eWilwood’s high pressure die casting allows the bore to be finished without a stainless sleeve, improving heat dissipation and seal life compared to sand-cast designs. The internal slosh baffle maintains a constant fluid supply during hard braking, acceleration, and cornering, while heavy duty springs speed fluid recovery and simplify bleeding—critical advantages for endurance, off-road, and competition use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":56165831835814,"sku":"WIL260-6765","price":76.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/260-6765-High-Volume-Master-Cylinder-7_8-Bore-1.jpg?v=1776886855"},{"product_id":"wilwood-high-volume-aluminum-master-cylinder-1in-bore","title":"Wilwood High Volume Brake Master Cylinder (1.00” Bore)","description":"\u003cp\u003eThe Wilwood High Volume Aluminum Master Cylinder (1.00\" Bore) is designed for high demand brake systems that require maximum fluid capacity, long piston travel, and consistent pedal feel, especially when paired with large multi-piston calipers. Built from high pressure die-cast, high grade aluminum, this master cylinder delivers excellent heat dissipation, tight bore tolerances, and long seal life.\u003c\/p\u003e\n\u003cp\u003eFeaturing an 8.2 oz integral reservoir, it provides significantly more fluid capacity than most competing integral-reservoir designs, helping maintain cooler operating temperatures and fluid reserve during extended braking events or high pad wear conditions. The 1.43\" piston stroke offers extra margin for high displacement caliper setups, while heavy duty internal return springs promote fast retraction and improved pedal response. A formed steel lid with a bellows-style gasket keeps moisture out while maintaining proper pressure balance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Wilwood High Volume Aluminum Master Cylinder\u003c\/li\u003e\n\u003cli\u003eIntegral reservoir with internal slosh control\u003c\/li\u003e\n\u003cli\u003eFormed steel lid with bellows gasket\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Type: Single Outlet\u003c\/li\u003e\n\u003cli\u003eBore Size: 1.00\"\u003c\/li\u003e\n\u003cli\u003ePiston Area: 0.780 in²\u003c\/li\u003e\n\u003cli\u003eStroke: 1.43\"\u003c\/li\u003e\n\u003cli\u003eVolume: 1.11 cu in\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum body \/ Steel components\u003c\/li\u003e\n\u003cli\u003eFinish: Bare\u003c\/li\u003e\n\u003cli\u003eOutlets: 1\"\u003c\/li\u003e\n\u003cli\u003eOutlet Thread Size: 1\/8\"-27 NPT\u003c\/li\u003e\n\u003cli\u003eReservoir Type: Integral\u003c\/li\u003e\n\u003cli\u003eCapacity: 8.2 oz\u003c\/li\u003e\n\u003cli\u003eVolume: 14.80 cu in\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\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003cul\u003e\n\u003cli\u003eCommon dimensions for flange or side mounting\u003c\/li\u003e\n\u003cli\u003eIdeal for performance, racing, and off-road brake systems\u003c\/li\u003e\n\u003cli\u003eRecommended for applications using large four- or six-piston calipers\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 1\/8\"-27 NPT brake fittings\u003c\/li\u003e\n\u003cli\u003eConfirm bore size selection based on pedal ratio, caliper piston area, and desired pedal effort.\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 width=\"14\" height=\"14\" viewbox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\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\u003eThe 1.00\" bore high-volume master cylinder offers increased fluid displacement per stroke, making it a strong choice for systems with higher total caliper piston area. Wilwood’s die-cast aluminum construction eliminates the need for stainless sleeves found in sand-cast designs, improving heat dissipation and seal longevity. The internal slosh baffle ensures uninterrupted fluid supply during hard braking, acceleration, and cornering—critical for off-road and competition environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":56165832065190,"sku":"WIL260-6766","price":76.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WIL260-6766-Wilwood-High-Volume-Aluminum-Master-Cylinder-1.00-Bore-1.jpg?v=1776798688"},{"product_id":"wilwood-high-volume-tandem-master-cylinder-1-1-8in-bore","title":"Wilwood Tandem Chamber Master Cylinder (1-1\/8” Bore)","description":"\u003cp\u003eThe Wilwood Tandem Chamber Master Cylinder was designed for hot rods, street rods, custom builds, classics, and resto-mods, this master cylinder is a favorite on award winning show cars because it works as great as it looks.\u003c\/p\u003e\n\u003cp\u003eA lightweight, high pressure die cast aluminum body houses a generous integral dual reservoir and a 1.10 piston stroke that provides ample fluid volume for larger multi-piston calipers. The slotted mounting flange makes installation straightforward on many OE bolt patterns, including Chrysler, Corvette, GM, and Ford Mustang. Dual outlet ports on both sides of the bore simplify plumbing (plugs included).\u003c\/p\u003e\n\u003cp\u003eThis 1-1\/8\" bore version is optimized for power brake systems (vacuum or hydraulic assist). It features a 2:1 primary to secondary chamber volume ratio for balanced front\/rear braking and weighs just 3 lbs—up to 75% lighter than cast-iron OE masters. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Wilwood Tandem Chamber Master Cylinder\u003c\/li\u003e\n\u003cli\u003eIntegral dual reservoir\u003c\/li\u003e\n\u003cli\u003eDual-sided outlet ports with plugs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePushrod not included for 1-1\/8\" bore. Proportioning valve kits sold separately.\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Type: Tandem Outlet\u003c\/li\u003e\n\u003cli\u003eBore Size: 1-1\/8 in\u003c\/li\u003e\n\u003cli\u003ePiston Area: 0.970 in²\u003c\/li\u003e\n\u003cli\u003eStroke: 1.10 in\u003c\/li\u003e\n\u003cli\u003eChamber Volume Ratio: 2:1 (Primary\/Secondary)\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n\u003cli\u003eFinish: Bare\u003c\/li\u003e\n\u003cli\u003eWeight: ~3 lbs\u003c\/li\u003e\n\u003cli\u003eOutlets: (2)\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\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for power brake applications (vacuum or hydraulic assist)\u003c\/li\u003e\n\u003cli\u003eMount flange spacing: 3.22 – 3.40 (common mid-1960s–present domestic vehicles)\u003c\/li\u003e\n\u003cli\u003eSlotted flange fits many Chrysler, GM, Corvette, and Ford Mustang bolt patterns\u003c\/li\u003e\n\u003cli\u003eFront and rear outlet ports on both sides for flexible plumbing\u003c\/li\u003e\n\u003cli\u003eFor disc\/drum systems, use a 10 lb residual valve on the drum circuit.\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\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eThe Tandem Chamber design delivers refined pressure control in a compact, lightweight package. The long 1.10 stroke ensures sufficient volume for modern multi-piston calipers, while the dual outlets and slotted flange reduce installation complexity on custom and retrofit builds. Pair this master with Wilwood’s combination proportioning valve retrofit kits (PN 260-13190 or 220-13189) for clean plumbing and proper bias control.\u003c\/p\u003e\n\u003cp\u003eReservoir Capacity\u003c\/p\u003e\n\u003cp\u003eFront \/ Rear: 8.0 oz \/ 4.8 oz\u003c\/p\u003e\n\u003cp\u003eVolume: 14.4 cu in \/ 8.7 cu in\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Wilwood","offers":[{"title":"Black","offer_id":56165832458406,"sku":"WIL260-8556-BK","price":304.85,"currency_code":"USD","in_stock":true},{"title":"Polished","offer_id":56165832491174,"sku":"WIL260-8556-P","price":304.85,"currency_code":"USD","in_stock":true},{"title":"Gray","offer_id":56165832523942,"sku":"WIL260-8556","price":254.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-4-Black.jpg?v=1776798681"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/collections\/WIL260-6764-Wilwood-High-Volume-Aluminum-Master-Cylinder-3_4_Bore-1_e841696f-623f-4db3-8a28-e45a258b57be.jpg?v=1776721371","url":"https:\/\/wideopendesign.com\/collections\/master-cylinders.oembed","provider":"Wide Open Design","version":"1.0","type":"link"}