{"product_id":"wilwood-140-13321","title":"Wilwood Rear Superlite 4R Parking Brake Kit, Black, 12.88-Inch GT Rotors for Bronco Small Ford Axles","description":"\u003cp\u003eThis rear package combines black radial-mount Superlite 4R calipers with slotted 12.88-inch Spec-37 rotors. iron hats work with the enclosed parking brake and the measured Small Ford Bronco axle-end arrangement. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 140-13321\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication and package:\u003c\/strong\u003e Rear Brake Kits - Street Performance; Rear Kits; Disc; Parking; Sold as a kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic inlet:\u003c\/strong\u003e 1\/8-27 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel bolt pattern(s):\u003c\/strong\u003e 5 x 5.5 in; 5 x 139.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud-hole \/ clearance provision:\u003c\/strong\u003e 0.640 in; 16.26 mm; diameter provision, not a thread designation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel diameter starting requirement:\u003c\/strong\u003e 17 in; 431.8 mm; verify the individual wheel against the installation drawing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear axle-end interface:\u003c\/strong\u003e Small Ford Bronco; axle\/flange offset 2.36 in; 59.94 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded mechanical components:\u003c\/strong\u003e Mounting hardware: Yes; hub(s): No; spindle(s): No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic components supplied:\u003c\/strong\u003e Master cylinder: No; brake booster: No; brake lines: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecified pad compound:\u003c\/strong\u003e BP-10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate rotor-hat specification:\u003c\/strong\u003e Iron; Black E-Coat; offset 1.540 inch; part 170-13326\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor dimensions:\u003c\/strong\u003e 12.88 in; 327.15 mm outside diameter; 1.10 in; 27.94 mm thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor construction:\u003c\/strong\u003e Spec-37 Iron; Vented; GT Slotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliper assembly:\u003c\/strong\u003e Forged Narrow Superlite 4R; 4 pistons per caliper; Forged Aluminium body; Radial mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston and finish specification:\u003c\/strong\u003e Stainless pistons; Black calipers; Black Powder Coat\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eConfirm the 2.36-inch offset, Small Ford flange and 5 x 5.50-inch pattern against DS1016. The nominal 17-inch wheel requirement does not replace a spoke-profile check, and cable adaptation remains separate.\u003c\/p\u003e\u003cp\u003eThe installation drawing specifies a 2.88-inch axle register and the corresponding centering-adapter arrangement. Check the housing pattern and axle offset, then confirm the flange fits within the 6.61-inch diameter limit with its 0.050-inch x 45-degree chamfer.\u003c\/p\u003e\u003cp\u003eThe installation reference identifies Small Ford Bronco rear applications with 2700-lb axle\/10-inch drums for 1966–1973 and 2900-lb axle\/10-inch drums for 1974–1975. The measured2.36-inch offset and actual housing flange still govern selection.\u003c\/p\u003e\u003cp\u003eHydraulic hoses\/fittings and parking-brake cables, adapters and cable hardware are not included. Choose a compatible cable arrangement for the internal parking brake; universal cable systems may require vehicle or cable modifications.\u003c\/p\u003e\u003ch3\u003eManufacturer References\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/BrakeKits\/BrakeKitsProdRear?itemno=140-13321\"\u003eWilwood exact kit specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1016.pdf\"\u003eWilwood installation instructions DS1016\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Images\/BrakeKits\/Axle-Offset-Worksheet-Wilwood.pdf\"\u003eAxle measurement worksheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAsk PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67755882053810,"sku":"140-13321","price":2299.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-13321_kit-xl.jpg?v=1792431381","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-13321","provider":"PMB Performance","version":"1.0","type":"link"}