{"product_id":"wilwood-140-15346","title":"Wilwood 12-Inch Titanium Inboard Rear Brake Kit for Sprint Quick-Change Axles","description":"\u003cp\u003eThis race-only rear kit pairs a solid titanium rotor with a narrow four-piston caliper for the specified 46-spline sprint axle and side bell. Camarillo, California is home to Wilwood Engineering, founded by Bill Wood in 1977. Wilwood designs and manufactures disc brake systems, with calipers, brake rotors, master cylinders, fittings, valves and lines serving motorsport, street-performance and specialized uses. Select individual parts to meet the needs of the complete brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Wilwood\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 140-15346\u003c\/li\u003e\n\u003cli\u003eKit classification: Rear Brake Kits - Race\u003c\/li\u003e\n\u003cli\u003eAxle position: Rear Kits\u003c\/li\u003e\n\u003cli\u003eBrake Type: Disc\u003c\/li\u003e\n\u003cli\u003eSelling unit: Sold as a kit.\u003c\/li\u003e\n\u003cli\u003eRecommended Use: Race Only. Not for Street use.\u003c\/li\u003e\n\u003cli\u003eRotor Outside Diameter: 12.00 in\u003c\/li\u003e\n\u003cli\u003eRotor Thickness: 0.36 in\u003c\/li\u003e\n\u003cli\u003eRotor Material: Titanium\u003c\/li\u003e\n\u003cli\u003eSurface Type: Slotted\u003c\/li\u003e\n\u003cli\u003eRotor construction: Solid\u003c\/li\u003e\n\u003cli\u003eBolt Circle Diameter: Splined\u003c\/li\u003e\n\u003cli\u003eRotor surface finish: Plain\u003c\/li\u003e\n\u003cli\u003eRotor vane \/ construction reference: Solid\u003c\/li\u003e\n\u003cli\u003eRequired spindle \/ rear housing interface: OEM\u003c\/li\u003e\n\u003cli\u003eSpindle Included: No\u003c\/li\u003e\n\u003cli\u003eMounting Hardware Included: Yes\u003c\/li\u003e\n\u003cli\u003eSeparate wheel hubs included: Splined dynamic rotor axle clamp and adapter included; not a wheel hub\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Included: No\u003c\/li\u003e\n\u003cli\u003eBrake Booster Included: No\u003c\/li\u003e\n\u003cli\u003eBrake Lines Included: No\u003c\/li\u003e\n\u003cli\u003ePistons per service caliper: 4\u003c\/li\u003e\n\u003cli\u003eService-caliper piston material: Stainless steel\u003c\/li\u003e\n\u003cli\u003eService-caliper mounting: Radial\u003c\/li\u003e\n\u003cli\u003eCaliper Color: Gray\u003c\/li\u003e\n\u003cli\u003eCaliper Finish: Type III hard anodize\u003c\/li\u003e\n\u003cli\u003eCaliper Inlet Port Diameter: 1\/8-27 NPT\u003c\/li\u003e\n\u003cli\u003eCaliper family: Narrow Dynalite radial-mount\u003c\/li\u003e\n\u003cli\u003ePad compound: BP-28\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eSpecify this solid-titanium configuration for the documented sprint quick-change installation: a 3.00-inch axle with 46 splines, standard inboard side bell and 3.50-inch mounting centers. The 12.00 × 0.36-inch rotor is solid rather than vented. Its floating rotor adapter and split axle clamp must be aligned according to DS-1278; neither is a conventional wheel hub. BP-28 pads and a narrow four-piston service caliper form the rear inboard brake. Supply suitable lines for the 1\/8-27 NPT inlet and check the complete race hydraulic system. This kit is for racing only and must not be used on the street.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/BrakeKits\/BrakeKitsProdRear?itemno=140-15346\"\u003eWilwood product specifications\u003c\/a\u003e · \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1278.pdf\"\u003eInstallation instructions\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eFor fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eManufacturer warning — brake pads only:\u003c\/strong\u003e WARNING: Cancer and Reproductive Harm. \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67757026148530,"sku":"140-15346","price":1518.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-15346_kit-xl.jpg?v=1792443238","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-15346","provider":"PMB Performance","version":"1.0","type":"link"}