{"product_id":"wilwood-140-18161-dr","title":"Wilwood Rear Red 12.88-Inch FNSL4R Brake \u0026 EPB Kit — GM Six-Lug 4x4 (1971–1991), SRP Rotors","description":"\u003cp\u003eThe red SRP package equips a matching GM 2.46-inch-offset rear axle with Superlite brakes and EPB hardware. Its 12.88-inch Spec-37 rotors use the six-lug pattern, with BP-10 pads supplied for the radial-mount calipers. The manufacturer is Wilwood Engineering, founded by Bill Wood in 1977 and based in Camarillo, California. It designs and manufactures disc brake components and complete systems, from calipers and brake rotors to valves, master cylinders, fittings and brake lines. Motorsport, street-performance and specialized installations each require those components to be matched to the complete brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 140-18161-DR\u003c\/li\u003e\n\u003cli\u003eService calipers: Forged Narrow Superlite 4R; 4 pistons; radial mount; Red Powder Coat\u003c\/li\u003e\n\u003cli\u003eBrake rotors: 12.88 x 1.10 inches; Spec-37 Iron; SRP Drilled \u0026amp; Slotted; vented construction\u003c\/li\u003e\n\u003cli\u003ePads: BP-10; piston material: Stainless\u003c\/li\u003e\n\u003cli\u003eCaliper body material: Forged aluminum\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet: 1\/8-27 NPT\u003c\/li\u003e\n\u003cli\u003eRotor\/hat wheel-stud clearance pattern(s): 6 x 5.5 in; 6 x 139.7 mm; match the installed hub\/axle pattern\u003c\/li\u003e\n\u003cli\u003eHousing\/flange application: K5 Blazer \/ K10\u003c\/li\u003e\n\u003cli\u003eRequired axle offset: 2.46 in; 62.48 mm\u003c\/li\u003e\n\u003cli\u003eParking equipment: separate electric calipers, controller and harness included\u003c\/li\u003e\n\u003cli\u003eHydraulic brake hoses: not included; select the correct application-specific lines\/fittings\u003c\/li\u003e\n\u003cli\u003eWheel clearance: 17-inch wheels may fit; verify the manufacturer’s complete caliper\/rotor template for the installed wheel\u003c\/li\u003e\n\u003cli\u003eSupplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eThe Superlite\/EPB installation is for a measured 2.46-inch-offset GM six-lug rear axle using the documented flange. Read the individual 1971–1991 application entries for K-series pickups\/Suburbans, Blazer\/K5 Blazer and Jimmy. Check clearance for both the four-piston service caliper and the electric parking caliper around the 12.88-inch rotor.\u003c\/p\u003e\u003cp\u003eDS1676 specifies a 3.55-inch axle center register, a 6 x 5.5-inch lug pattern and a flange no larger than 7.05 inches with a 0.050-inch x 45-degree chamfer. Plan the separate hydraulic line purchase and the routing of the included EPB harness before removing the original brakes.\u003c\/p\u003e\u003cp\u003eConfirm the applicable vehicle entry and all numbered notes in the fitment table below.\u003c\/p\u003e\u003cp\u003eThe electric parking brake is for stationary parking, not an emergency-stop brake. Applying it while the vehicle is moving can lock the rear wheels and cause a skid. Follow the wiring and holding-test procedures in the manufacturer’s instructions.\u003c\/p\u003e\u003ch3\u003eManufacturer Resources\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/BrakeKits\/BrakeKitsProdRear?itemno=140-18161-DR\"\u003eExact Wilwood kit specifications and wheel-clearance information\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1676.pdf\"\u003eInstallation instructions and component list\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Images\/BrakeKits\/Axle-Offset-Worksheet-Wilwood.pdf\"\u003eAxle-offset measurement worksheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWARNING: 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\u003cp\u003eWith over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.\u003c\/p\u003e\u003ch3\u003eVehicle Applications\u003c\/h3\u003e\u003cdiv class=\"fitment-table-wrap\" style=\"overflow-x:auto\"\u003e\u003ctable class=\"specs\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eModel option\u003c\/th\u003e\n\u003cth\u003eFront brakes\u003c\/th\u003e\n\u003cth\u003eRear brakes\u003c\/th\u003e\n\u003cth\u003eKit application\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971-1974, 1987-1991\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBlazer\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971-1991\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eJimmy\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971-1974\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK15\/K1500 Pickup\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1971-1974\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK15\/K1500 Suburban\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975-1986\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eK10\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975-1986\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eK10 Suburban\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975-1986\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eK5 Blazer\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975-1978\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK15\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1975-1978\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK15 Suburban\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1979-1986\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK1500\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1979\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK1500 Suburban\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1980-1986\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eK1500 Suburban\u003c\/td\u003e\n\u003ctd\u003e4 x 4\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eApplication Notes\u003c\/h4\u003e\u003col\u003e\u003cli\u003eLine kit included (manufacturer): None\u003c\/li\u003e\u003c\/ol\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67724368773298,"sku":"140-18161-DR","price":3530.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-18161-DR_kit-xl.jpg?v=1792086357","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-18161-dr","provider":"PMB Performance","version":"1.0","type":"link"}