{"product_id":"wilwood-120-17163","title":"Wilwood Rear Brake Caliper for Porsche 911 (1969–1983) – D31","description":"\u003cp\u003eReplace the matching rear caliper on your classic Porsche 911 with a forged aluminum Wilwood D31. This \u003cstrong\u003erear caliper\u003c\/strong\u003e is the version for \u003cstrong\u003e3.00-inch mounting centers and 20 mm rotors\u003c\/strong\u003e; it is sold individually.\u003c\/p\u003e\u003ch2\u003eCheck your Porsche’s brake setup\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003ccaption\u003eVehicle application and required brake setup\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003ePorsche application\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003ePosition\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eRequired configuration\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003ePorsche 911 with the matching original two-piston brake system\u003c\/td\u003e\n\u003ctd\u003e1969–1983\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003ctd\u003eMatching original two-piston rear brake arrangement; 3.00-inch mounting centers and 20 mm rotors.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003eCheck the mounting-bolt spacing and rotor thickness actually fitted to your car, especially if struts, hubs or brakes have been changed. Turbo and Turbo-Look models with four-piston brakes are excluded.\u003c\/p\u003e\u003cp\u003eThe D31 follows the original 3.00-inch mount geometry and is compatible with the corresponding stock-size replacement rotor and factory master cylinder. It is an OE-style caliper replacement; it does not increase rotor size or replace a complete axle brake kit.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePosition\u003c\/th\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eForged aluminum body; stainless steel pistons; dust boots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMount\u003c\/th\u003e\n\u003ctd\u003eLug mount, 3.00-inch bolt centers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRotor thickness\u003c\/th\u003e\n\u003ctd\u003e20 mm nominal (0.79 inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMatching original rotor size\u003c\/th\u003e\n\u003ctd\u003e290 × 20 mm (11.42-inch diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePistons\u003c\/th\u003e\n\u003ctd\u003eTwo opposed pistons, 1.50-inch bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eListed piston area\u003c\/th\u003e\n\u003ctd\u003e1.77 square inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInlet thread\u003c\/th\u003e\n\u003ctd\u003eM10 × 1.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrake pad shape\u003c\/th\u003e\n\u003ctd\u003eD31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eOne caliper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhat to order with it\u003c\/h2\u003e\u003cp\u003eFor a complete axle replacement, order two matching calipers. D31 pads, rotors and brake hoses are separate selections. Wilwood lists \u003cstrong\u003e150-10-D0031K\u003c\/strong\u003e as the BP-10 pad set for this caliper family; choose pads by the installed caliper, rather than model year alone. Confirm your hose connection and wheel clearance before installation.\u003c\/p\u003e\u003ch2\u003eDocuments and fitment help\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/Flyers\/fl553.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePorsche 911 OE-style component application guide (opens in a new tab)\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eUnsure which caliper your Porsche needs? \u003ca href=\"\/pages\/contact-us\"\u003eContact PMB Performance\u003c\/a\u003e with the model year, installed brake parts and clear photos so we can help check the match before you order.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Anodized","offer_id":67764061241522,"sku":"120-17163","price":358.42,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":67767180689586,"sku":"120-17163-BK","price":421.67,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":67767180722354,"sku":"120-17163-RD","price":421.67,"currency_code":"USD","in_stock":true},{"title":"Yellow","offer_id":67767180755122,"sku":"120-17163-Y","price":421.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-17163-xl.jpg?v=1792509227","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-17163","provider":"PMB Performance","version":"1.0","type":"link"}