{"product_id":"wilwood-120-16088","title":"Wilwood Left Anodized Aero4-ST Caliper — Rotor Width 1.25 Inches, 4 Pistons","description":"\u003cp\u003eWilwood supplies this left Aero4-ST brake caliper with an anodized finish. Its 7.09-inch mounting span and 1.25-inch-wide rotor configuration are key checks when selecting a single caliper for an existing system. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. Its disc brake design and manufacturing work includes master cylinders, valves, fittings and brake lines as well as rotors and calipers. The company serves motorsport, street-performance and specialized applications in which the entire brake system determines component choice. This Aero4-ST uses four Thermlock insulated pistons with the thick 6620 pad outline. Check the exact unequal bore combination and the 7.09-inch radial mount against the existing installation; the caliper is not selected by color or rotor diameter alone.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-16088\u003c\/li\u003e\n\u003cli\u003eComponent: Aero4 Radial Mount; one individual caliper\u003c\/li\u003e\n\u003cli\u003ePlacement: Left\u003c\/li\u003e\n\u003cli\u003eConstruction and finish: Forged aluminum; Type III Anodize\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\u003ePistons: 4; Thermlock insulated; bore dimensions 1.75\/1.50 inches\u003c\/li\u003e\n\u003cli\u003eHydraulic piston area: 4.17 square inches\u003c\/li\u003e\n\u003cli\u003eDust boots: No\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 6620; shape number does not specify a friction compound\u003c\/li\u003e\n\u003cli\u003eNominal rotor width: 1.25 inches\u003c\/li\u003e\n\u003cli\u003eRotor width range: 1.10–1.28 inches\u003c\/li\u003e\n\u003cli\u003eRotor diameter range: 12.19–15.00 inches\u003c\/li\u003e\n\u003cli\u003eCaliper weight reference: 7.1 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eVerify the radial mounting interface and the complete rotor-width range shown above. Use the left-hand caliper and keep the bleed arrangement in the specified orientation. Account for the 1.75\/1.50-inch bores when selecting the master cylinder and front-to-rear balance. Check that the 1\/8-27 NPT fitting, flexline and wheel remain clear throughout their operating movement.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Calipers\/CaliperProd?itemno=120-16088\"\u003eWilwood caliper specifications\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eA correct caliper choice begins with the complete brake arrangement. PMB Performance has over 20 years of parts and fitment experience; send the mounting geometry and rotor dimensions for help with your selection.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764049379506,"sku":"120-16088","price":744.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-13297-xl_e4533dc2-714a-4580-950f-e12317627b73.jpg?v=1792509058","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-16088","provider":"PMB Performance","version":"1.0","type":"link"}