{"product_id":"wilwood-120-15598-bk","title":"Wilwood Black Aero4-DS Caliper, 1.38\/1.38-Inch Piston Bores","description":"\u003cp\u003eFor a brake assembly requiring the 1.10-inch rotor-width version, this Wilwood Aero4-DS brake caliper provides the black configuration. Compare its radial mount and piston area with the component being replaced. The Aero4-DS combines four hydraulic pistons with dust wiper seals. Its radial attachment must be aligned to the rotor centerline with the correct bracket; the caliper alone does not establish a wheel or vehicle fit. 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.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-15598-BK\u003c\/li\u003e\n\u003cli\u003eComponent: Aero4-DS 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; Black Powder Coat\u003c\/li\u003e\n\u003cli\u003eMounting interface: Radial; mounting centers 7.09 inches\u003c\/li\u003e\n\u003cli\u003eMounting-hole diameter: 0.45 inches\u003c\/li\u003e\n\u003cli\u003eMount height: 2.09 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: 1\/8-27 NPT\u003c\/li\u003e\n\u003cli\u003eNominal rotor width: 1.10 inches\u003c\/li\u003e\n\u003cli\u003eRotor width range: 1.00–1.10 inches\u003c\/li\u003e\n\u003cli\u003eRotor diameter range: 12.19–15.00 inches\u003c\/li\u003e\n\u003cli\u003eCaliper weight reference: 6.9 lb\u003c\/li\u003e\n\u003cli\u003ePistons: 4; stainless steel; bore dimensions 1.38\/1.38 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic piston area: 3.00 square inches\u003c\/li\u003e\n\u003cli\u003eDust boots: Yes\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 6617; shape number does not specify a friction compound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eMatch the 7.09-inch radial attachment to the existing bracket, then check caliper centering over the 1.10-inch nominal-width rotor. Axle placement is determined by the engineered brake package, not by a generic caliper designation. The 1\/8-27 NPT connection must use the correct fitting and seal. Check the full wheel envelope with the actual bracket and rotor installed.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Calipers\/CaliperProd?itemno=120-15598-BK\"\u003eWilwood caliper specifications\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003ePMB Performance has over 20 years of experience with parts and brake fitment. Send the installed rotor dimensions, bracket measurements and hydraulic details so we can help compare the component before you order.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764045512882,"sku":"120-15598-BK","price":668.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Aero4-DS_Radial_Mount_BLK-xl_0d54b756-539b-46a2-89e0-4064102e1e15.jpg?v=1792509007","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-15598-bk","provider":"PMB Performance","version":"1.0","type":"link"}