{"product_id":"atlas-ii-3-8-transfer-case-trail-series-left-drop-wod-spec-configuration","title":"Atlas II 3.8 Transfer Case – Trail Series Left Drop (WOD Spec Configuration)","description":"\u003cp\u003eThe \u003cstrong\u003eAtlas II Trail Series Transfer Case configured to Wide Open Design specifications\u003c\/strong\u003e is a gear-driven transfer case package selected for recreational off-road, rock crawling, trail, and custom 4x4 applications. With a 3.8:1 low-range ratio, the Atlas II provides increased torque multiplication and low-speed control for technical terrain while retaining a direct 1:1 high range for normal driving and higher-speed trail use.\u003c\/p\u003e\n\u003cp\u003eThe Trail Series uses the proven Atlas II two-speed design with a one-piece aluminum case, large helical-cut gears, precision-machined internal components, and independent front and rear output control. This WOD-spec Trail Series package is intended for recreational off-road and mixed-use vehicles. The 3.8:1 ratio provides deeper low-range reduction for vehicles that prioritize technical rock crawling, steep terrain, and controlled low-speed driving while still retaining the versatility of a 1:1 high range.\u003c\/p\u003e\n\u003cp\u003eFor dedicated racing, high-horsepower, and extreme-duty applications, see our \u003ca href=\"\/products\/atlas-ii-3-8-transfer-case-g2-pro-series-left-drop-wod-spec-configuration\"\u003eWOD-spec Atlas 3.8 G2 Pro Series transfer case\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWOD Spec Configuration:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAtlas II Trail Series 2-Speed Transfer Case\u003c\/li\u003e\n\u003cli\u003e3.8:1 Low-Range Gear Ratio\u003c\/li\u003e\n\u003cli\u003e32-Spline GM Input Gear\u003c\/li\u003e\n\u003cli\u003eDriver-Side \/ Left-Drop Configuration\u003c\/li\u003e\n\u003cli\u003eShort Tailhousing Configuration\u003c\/li\u003e\n\u003cli\u003e(2) 1410 Front \u0026amp; Rear U-Bolt Style Yokes\u003c\/li\u003e\n\u003cli\u003e5.5\" Left\/Right Atlas Shifter \u0026amp; Linkage\u003c\/li\u003e\n\u003cli\u003eAtlas 75W-90 GL4 Oil \u0026amp; Stud Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eHave ordering questions?\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cb style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003ca title=\"Call Us: 615-962-9135\" href=\"tel:615-962-9135\"\u003eCall us\u003c\/a\u003e \u003c\/b\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eand our team will be happy to help confirm fitment or place a custom order.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\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\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Case\u003c\/td\u003e\n\u003ctd\u003eAtlas II Trail Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWOD Configuration\u003c\/td\u003e\n\u003ctd\u003eTrail \/ Recreational Off-Road\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003e2-Speed Gear Driven\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Range\u003c\/td\u003e\n\u003ctd\u003e1:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Range\u003c\/td\u003e\n\u003ctd\u003e3.8:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e32-Spline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Output\u003c\/td\u003e\n\u003ctd\u003eLeft Drop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTailhousing\u003c\/td\u003e\n\u003ctd\u003eShort Trail Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriveline\u003c\/td\u003e\n\u003ctd\u003e1410 Front \u0026amp; Rear U-Bolt Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShifter\u003c\/td\u003e\n\u003ctd\u003eAtlas II Left Shift Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Package\u003c\/td\u003e\n\u003ctd\u003eRequired Hardware \u0026amp; Gear Oil Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eRock Crawling, Trail \u0026amp; Mixed-Terrain Off-Road\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\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\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for custom 4WD applications requiring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e32-Spline GM Transmission Input\u003c\/li\u003e\n\u003cli\u003eDriver-Side \/ Left-Drop Front Driveshaft\u003c\/li\u003e\n\u003cli\u003e3.8:1 Low-Range Ratio\u003c\/li\u003e\n\u003cli\u003e1410 Front and Rear Driveshaft Yokes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRock Crawlers\u003c\/li\u003e\n\u003cli\u003eTrail Rigs\u003c\/li\u003e\n\u003cli\u003eCustom Jeeps and 4x4s\u003c\/li\u003e\n\u003cli\u003eTube Chassis Vehicles\u003c\/li\u003e\n\u003cli\u003eLarge-Tire Off-Road Builds\u003c\/li\u003e\n\u003cli\u003eMixed-Use Trail and Recreational 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\u003eThis configuration uses a 32-spline GM input.\u003c\/li\u003e\n\u003cli\u003eFront output is left drop \/ driver side.\u003c\/li\u003e\n\u003cli\u003eShort tailhousing does not provide a speedometer provision.\u003c\/li\u003e\n\u003cli\u003eFront and rear outputs are configured with 1410 non-CV U-bolt-style yokes.\u003c\/li\u003e\n\u003cli\u003eVerify transmission output spline, adapter requirements, transfer-case drop, driveshaft configuration, and available chassis clearance before ordering.\u003c\/li\u003e\n\u003cli\u003eCustom drivetrain installations may require additional adapters, crossmembers, driveshaft modifications, or related installation components.\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\u003e\u003cstrong\u003eFAQ \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\n\u003cpath class=\"vertical\" d=\"M2.75 7H11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003cpath class=\"horizontal\" d=\"M7 2.75L7 11.25\" stroke=\"currentColor\" stroke-width=\"var(--icon-stroke-width)\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ch3\u003eWhat is the difference between the Atlas Trail Series and G2 Pro Series?\u003c\/h3\u003e\n\u003cp\u003eThe Atlas Trail Series is designed for recreational off-road and mixed-use vehicles that need the strength, gearing, and control of an Atlas transfer case. The G2 Pro Series is intended for racing and more extreme-duty applications. Keeping the two series separate allows builders to choose the transfer case that better matches how the vehicle will actually be used.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the 3.8:1 Atlas instead of the 3.0:1 ratio?\u003c\/h3\u003e\n\u003cp\u003eA 3.8:1 low range provides deeper gear reduction than the 3.0:1 option, giving the vehicle greater torque multiplication and slower, more controlled movement in low range. It is a strong choice for vehicles that spend more time in technical rock crawling, steep terrain, and situations where precise low-speed control is important. Final gearing should be considered with transmission ratios, axle gearing, tire diameter, engine characteristics, and intended use.\u003c\/p\u003e\n\u003ch3\u003eWhat is the advantage of a gear-driven transfer case?\u003c\/h3\u003e\n\u003cp\u003eA gear-driven transfer case eliminates the drive chain found in many factory transfer cases. The Atlas uses heavy-duty gearing and a rigid case design to provide high torque capacity, consistent power transfer, and durability for demanding off-road use.\u003c\/p\u003e\n\u003ch3\u003eWhat does the Atlas II 2-speed provide?\u003c\/h3\u003e\n\u003cp\u003eThe Atlas II provides a 1:1 high range and a dedicated low range. This 3.8:1 version provides 3.8 times the gear reduction in low range, giving the driver greater torque multiplication and low-speed control for technical terrain.\u003c\/p\u003e\n\u003ch3\u003eWhat maintenance does an Atlas transfer case require?\u003c\/h3\u003e\n\u003cp\u003eChange the gear oil after the initial 500 miles and then approximately every 10,000–15,000 miles. Use the manufacturer-recommended GL-4 synthetic gear oil and inspect fluid condition, yokes, fasteners, and related drivetrain components regularly. Yoke bolts should also be checked and retorqued at the recommended service intervals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Advance Adapters","offers":[{"title":"Default Title","offer_id":56942782415014,"sku":"ATLAS38","price":3059.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/Atlas30-WOD-1_e979401c-1209-4b27-b0de-7dab647e1882.jpg?v=1786480401","url":"https:\/\/wideopendesign.com\/products\/atlas-ii-3-8-transfer-case-trail-series-left-drop-wod-spec-configuration","provider":"Wide Open Design","version":"1.0","type":"link"}