{"product_id":"wilwood-120-16465","title":"Wilwood 4-Piston XRZ4R-ST Caliper — Anodized, 1.50\/1.50-Inch Bore Size","description":"\u003cp\u003eFor a brake assembly requiring the 0.81-inch rotor-width version, this Wilwood XRZ4R-ST brake caliper provides the anodized configuration. Compare its radial mount and piston area with the component being replaced. XRZ4R-ST is a forged four-piston radial race caliper with Thermlock pistons and an X-shaped center bridge. It uses 10420-shape pads and a 3\/8-24 hydraulic inlet. Confirm the brake bracket and piston volume when replacing another radial caliper. Wilwood Engineering, founded in 1977 by Bill Wood, is based in Camarillo, California. The company designs and manufactures disc braking equipment for motorsport, street-performance and specialized use. Calipers, rotors, master cylinders, valves, fittings and brake lines form a range whose individual components must be matched to one another.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-16465\u003c\/li\u003e\n\u003cli\u003eComponent: XRZ4R Radial Mount; one individual caliper\u003c\/li\u003e\n\u003cli\u003ePlacement: Universal mounting orientation; verify axle position\u003c\/li\u003e\n\u003cli\u003eConstruction and finish: Forged aluminum; Type III Anodize\u003c\/li\u003e\n\u003cli\u003eMounting interface: Radial; mounting centers 5.98 inches\u003c\/li\u003e\n\u003cli\u003eMounting-hole diameter: 0.39 inches\u003c\/li\u003e\n\u003cli\u003eMount height: 1.63 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: 3\/8-24\u003c\/li\u003e\n\u003cli\u003eNominal rotor width: 0.81 inches\u003c\/li\u003e\n\u003cli\u003eRotor width range: 0.75–0.90 inches\u003c\/li\u003e\n\u003cli\u003eRotor diameter range: 11.75–14.00 inches\u003c\/li\u003e\n\u003cli\u003eCaliper weight reference: 5.2 lb\u003c\/li\u003e\n\u003cli\u003ePistons: 4; Thermlock insulated; bore dimensions 1.50\/1.50 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic piston area: 3.54 square inches\u003c\/li\u003e\n\u003cli\u003eDust boots: No\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 10420; shape number does not specify a friction compound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eChoose this component around the existing rotor and bracket, including the 0.81-inch nominal rotor width and 5.98-inch mounting span. Axle placement is determined by the engineered brake package, not by a generic caliper designation. Compare pad support, caliper offset and piston volume with the brake being replaced. Wheel size alone cannot confirm spoke or barrel clearance.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Calipers\/CaliperProd?itemno=120-16465\"\u003eWilwood caliper specifications\u003c\/a\u003e · \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/Flyers\/fl528.pdf\"\u003eWilwood technical reference\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eShare the vehicle and the brake system actually installed with PMB Performance before ordering if the configuration is uncertain. We draw on over 20 years of parts and fitment experience when comparing the rotor, mount and caliper.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764051050674,"sku":"120-16465","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-16464-xl_2b8494cd-4153-4cca-b373-459a3c7ccadb.jpg?v=1792509080","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-16465","provider":"PMB Performance","version":"1.0","type":"link"}