{"product_id":"wilwood-140-17141","title":"Wilwood Rear Inboard Superlite 4R Sprint Brake Kit, 12.19-Inch Dynamic GT Rotor, 3.00-Inch 46-Spline Axle","description":"\u003cp\u003eThis Wilwood Superlite 4R rear inboard sprint brake kit places one four-piston radial-mount caliper over a dynamically mounted 12.19 × 0.81-inch GT rotor. It is a race-only assembly for the specified side-bell and 46-spline axle interface, with a splined rotor adapter rather than a road-wheel hub. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc-brake components and systems. Bill Wood founded the company in 1977. Motorsport, specialized applications and street-performance vehicles use its range of calipers, brake rotors, master cylinders, valves, fittings and brake lines, with component selection matched to the finished brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 140-17141; one inboard racing brake assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle and bell interface:\u003c\/strong\u003e 3.00-inch × 46-spline axle and 3.50-inch mounting centers; dynamic rotor attachment. The splined adapter is not a wheel bolt circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake rotor size:\u003c\/strong\u003e 12.19-inch outside diameter × 0.81-inch thickness; vented friction section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic lines:\u003c\/strong\u003e Hydraulic flexlines and fittings are not included; select compatible lines for the complete installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic sizing:\u003c\/strong\u003e cataloged bore sizes 1.88, 1.75 inches; piston area 5.18 square inches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel envelope:\u003c\/strong\u003e Use the inboard mounting and caliper envelope in the installation drawing; this is not a wheel-diameter specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService calipers:\u003c\/strong\u003e Forged Superlite 4 Radial Mount; 4 pistons per caliper; Type III Anodize; radial mounting; stainless pistons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware and retained components:\u003c\/strong\u003e Mounting hardware supplied; splined inboard rotor adapter supplied; spindles, master cylinder and brake booster are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor specification:\u003c\/strong\u003e Material: Spec-37 Iron; Type: GT 36 Curved Vane; Style: GT Slotted; Surface Finish: Plain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied friction pads:\u003c\/strong\u003e BP-40 compound; match operating conditions to the intended use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eThis is a rear inboard sprint-car racing installation, not an outboard wheel-brake conversion. DS1539 specifies 3.50-inch mounting centers and a 3.00-inch × 46-spline axle. Match the existing side bell and dynamic rotor attachment to the assembly drawing; the splined adapter is not a wheel hub or wheel bolt pattern. BP-40 pads and the racing configuration are unsuitable for ordinary street use. This is a racing selection; review the pad operating range and maintenance requirements before use.\u003c\/p\u003e\u003cp\u003eSend PMB Performance the VIN and the relevant brake measurements for help with selection. We have over 20 years of experience working through parts and compatibility details.\u003c\/p\u003e\u003cp\u003eReview \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1539.pdf\"\u003eInstallation instructions\u003c\/a\u003e for the complete installation and clearance requirements.\u003c\/p\u003e\u003ch3\u003eManufacturer Warning\u003c\/h3\u003e\u003cp\u003eApplicable to brake pads only. WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67757527728306,"sku":"140-17141","price":906.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-17141_kit-xl.jpg?v=1792450409","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-17141","provider":"PMB Performance","version":"1.0","type":"link"}