{"product_id":"wilwood-120-16731-rd","title":"Wilwood Left Red TX4R Caliper, Radial Mount, 1.62\/1.38-Inch Bores","description":"\u003cp\u003eThis red Wilwood TX4R left brake caliper uses a 9.63-inch radial mount and the 1.25-inch rotor-width configuration. It is sold as one caliper, with its piston and mounting specification selected for the complete brake assembly. Based in Camarillo, California, Wilwood Engineering has its origins in the company Bill Wood founded in 1977. Its designs and manufactured disc brake products cover calipers and rotors alongside master cylinders, valves, fittings and lines. Motorsport, street-performance and specialized installations each require components selected for the complete system. The forged TX4R is a four-piston radial caliper intended for heavy vehicle brake assemblies. This exact 1.25-inch nominal-width unit differs from wider TX4R variants. Match the 10120 pad shape, bracket offset and available wheel space rather than relying on the family application summary.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-16731-RD\u003c\/li\u003e\n\u003cli\u003eComponent: TX4R Forged Radial Mount; one individual caliper\u003c\/li\u003e\n\u003cli\u003ePlacement: Left\u003c\/li\u003e\n\u003cli\u003eConstruction and finish: Forged aluminum; Red Powder Coat\u003c\/li\u003e\n\u003cli\u003eNominal rotor width: 1.25 inches\u003c\/li\u003e\n\u003cli\u003eRotor width range: 1.17–1.25 inches\u003c\/li\u003e\n\u003cli\u003eRotor diameter range: 14.25–16.00 inches\u003c\/li\u003e\n\u003cli\u003eCaliper weight reference: 13.4 lb\u003c\/li\u003e\n\u003cli\u003ePistons: 4; stainless steel; bore dimensions 1.62\/1.38 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic piston area: 3.56 square inches\u003c\/li\u003e\n\u003cli\u003eDust boots: Yes\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 10120; shape number does not specify a friction compound\u003c\/li\u003e\n\u003cli\u003eMounting interface: Radial; mounting centers 9.63 inches\u003c\/li\u003e\n\u003cli\u003eMount height: 3.07 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: 1\/8-27 NPT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eCompare the caliper drawing with your radial bracket before ordering. The 9.63-inch mounting centers and 1.62\/1.38-inch bores must suit the installed rotor offset and hydraulic system. Use the left-hand caliper and keep the bleed arrangement in the specified orientation. A suitable pad sweep and clearance inside the wheel must be verified independently of rotor width.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Calipers\/CaliperProd?itemno=120-16731-RD\"\u003eWilwood caliper specifications\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eFor a modified brake system, provide its existing component specifications along with the vehicle details. PMB Performance has over 20 years of parts and fitment experience to help check the assembly before purchase.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764054524082,"sku":"120-16731-RD","price":766.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-16731-RD-xl.jpg?v=1792509130","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-16731-rd","provider":"PMB Performance","version":"1.0","type":"link"}