{"product_id":"wilwood-120-17203-rd","title":"Wilwood Red XRS4R Brake Caliper, Four Equal Bores \/ 0.75–0.84-Inch Rotor-Width Range","description":"\u003cp\u003eA red XRS4R housing surrounds four equal 1.38-inch pistons on this Wilwood caliper. It is the narrower 0.81-inch nominal rotor-width configuration, with the forged body's X-shaped bridge linking the opposing piston banks. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components. Bill Wood founded the company in 1977; its motorsport, street-performance and specialized range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-17203-RD. Type: Forged XRS4R Radial Mount caliper.\u003c\/li\u003e\n\u003cli\u003eCaliper body: forged aluminum; finish: Red Powder Coat.\u003c\/li\u003e\n\u003cli\u003ePiston arrangement: 4 stainless steel pistons; bore specification 1.38\/1.38 inches. Effective piston area: 3.00 square inches.\u003c\/li\u003e\n\u003cli\u003eMounting: radial, 5.98-inch centers; orientation: universal. 0.39-inch holes; 1.45-inch mounting height.\u003c\/li\u003e\n\u003cli\u003eComponent: one individual hydraulic brake caliper. Select the mating rotor, pads, mounting hardware and line connection to suit the complete brake assembly.\u003c\/li\u003e\n\u003cli\u003eRotor channel: 0.81-inch nominal width. Specified width limits: 0.75–0.84 inch; rotor outside diameter: 11.75–14.00 inches.\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 10416. Choose pad dimensions and friction material for the brake system.\u003c\/li\u003e\n\u003cli\u003eCaliper component weight: approximately 4.9 lb.\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: 1\/8-27 NPT. Match the fitting thread and sealing arrangement to the brake hose.\u003c\/li\u003e\n\u003cli\u003ePiston dust boots: no.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eThis caliper accepts an 11.75–14.00-inch rotor only when the bracket places the pad correctly. Verify the width, offset, hydraulic balance and wheel clearance together; diameter alone is not a fitment guarantee.\u003c\/p\u003e\u003cp\u003ePMB Performance brings over 20 years of experience to brake-component selection. Share the installed caliper, rotor size and mounting arrangement so the relevant dimensions can be compared.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764574257330,"sku":"120-17203-RD","price":636.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-17203-RD-xl.jpg?v=1792514380","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-17203-rd","provider":"PMB Performance","version":"1.0","type":"link"}