{"product_id":"wilwood-140-12551-d","title":"Wilwood Symmetrical-End Rear Drag Brake Kit, Large-Stud Dynapro Lug-Drive, 2.81-Inch Offset","description":"\u003cp\u003eThis Wilwood Dynapro package supplies drilled 11.44-inch Super Alloy rings and one four-piston caliper at each rear wheel. The large-stud lug-drive hats are configured for the specified Lamb\/Mark Williams symmetrical housing end and 2.81-inch offset. Select it by the installed flange and wheel-stud arrangement rather than assuming every aftermarket symmetrical axle end is identical. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 140-12551-D\u003c\/li\u003e\n\u003cli\u003eType: Dynapro SA Lug Drive Dynamic Rear Drag Brake Kit\u003c\/li\u003e\n\u003cli\u003eCalipers: Dynapro Lug Mount; 4 pistons per caliper; Type III Anodize.\u003c\/li\u003e\n\u003cli\u003eCaliper bore sizes: 1.75, 1.75 inches. Piston type: Stainless.\u003c\/li\u003e\n\u003cli\u003eIncluded pad compound: BP-28.\u003c\/li\u003e\n\u003cli\u003eRotors: 11.44-inch diameter × 0.35-inch thickness; Drilled; Super Alloy; Plain surface; solid, unvented.\u003c\/li\u003e\n\u003cli\u003eRear housing end: Symmetrical End.\u003c\/li\u003e\n\u003cli\u003eRequired axle flange offset: 2.81 inches.\u003c\/li\u003e\n\u003cli\u003eWheel bolt circles: 5 x 5.00; 5 x 4.75 inches.\u003c\/li\u003e\n\u003cli\u003eIncluded: paired calipers, pads, rotors, mounting brackets and assembly hardware, rotor hats.\u003c\/li\u003e\n\u003cli\u003eHydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.\u003c\/li\u003e\n\u003cli\u003eConditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.\u003c\/li\u003e\n\u003cli\u003eAxle-flange limit: 6.29-inch maximum outside diameter with the specified 0.050-inch × 45-degree chamfer. Match the register and stud configuration to the exact installation drawing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eDS913 names 0.68-inch wheel studs, while the selected product note states 0.64 inches; obtain Wilwood confirmation of the permitted stud before purchase. The 0.700-inch hat hole describes clearance, not the stud itself. Compare bearing\/register dimensions and the mounting pattern with the drawing, then assess wheel clearance and hydraulic balance for the intended drag application. Hydraulic lines and fittings are separate.\u003c\/p\u003e\u003cp\u003eWilwood installation documents: \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds913.pdf\"\u003eInstallation instructions\u003c\/a\u003e; \u003ca href=\"https:\/\/www.wilwood.com\/Images\/BrakeKits\/Axle-Offset-Worksheet-Wilwood.pdf\"\u003eTechnical bulletin\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003ePMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCalifornia Proposition 65 warning, brake pads only:\u003c\/strong\u003e 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 \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":67765574992050,"sku":"140-12551-D","price":1070.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-12551-D_kit-xl.jpg?v=1792520876","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-12551-d","provider":"PMB Performance","version":"1.0","type":"link"}