{"product_id":"wilwood-120-17203-bk","title":"Wilwood XRS4R Black Four-Piston Caliper, 5.98-Inch Radial Centers \/ 0.81-Inch Rotor Width","description":"\u003cp\u003eThis black Wilwood XRS4R brings a four-piston layout to a brake system using a nominal 0.81-inch-wide rotor. Its 3.00-square-inch effective area and 5.98-inch radial centers identify the mechanical and hydraulic configuration more usefully than a broad vehicle label. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. It designs and manufactures disc braking systems for motorsport, street-performance and specialized applications, with a component range covering 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-BK. Type: Forged XRS4R Radial Mount caliper.\u003c\/li\u003e\n\u003cli\u003ePad fit uses shape 10416. Match the pad to the rotor and intended operating conditions.\u003c\/li\u003e\n\u003cli\u003eConstruction and surface: forged aluminum, finished in Black Powder Coat.\u003c\/li\u003e\n\u003cli\u003eRotor dimensions: outside diameter 11.75–14.00 inches; nominal width 0.81 inch, with width limits of 0.75–0.84 inch.\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\u003eBore sequence 1.38\/1.38 inches across 4 pistons. Piston construction: stainless steel; specified effective area 3.00 square inches.\u003c\/li\u003e\n\u003cli\u003eAttachment geometry: radial mount with 5.98-inch centers; universal. 0.39-inch holes; 1.45-inch mounting height.\u003c\/li\u003e\n\u003cli\u003ePiston dust boots: no.\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\u003eCaliper component weight: approximately 4.9 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eCheck how the bracket centers the caliper over the rotor and where the 10416 pads contact its friction face. The 1\/8-27 NPT inlet also needs a fitting suited to the hose and sealing method.\u003c\/p\u003e\u003cp\u003eWith 20+ years of experience, PMB Performance can help assess the brake hardware. Provide the caliper number, rotor dimensions and bracket measurements when asking about compatibility.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764573274290,"sku":"120-17203-BK","price":636.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-17203-BK-xl.jpg?v=1792514379","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-17203-bk","provider":"PMB Performance","version":"1.0","type":"link"}