{"product_id":"wilwood-120-13156","title":"Wilwood Left Thermlock Superlite Internal 4 Caliper, Type III \/ 0.81-Inch Rotor Width","description":"\u003cp\u003eThe left-hand Wilwood FSLI4\/ST is a four-piston lug-mount caliper with a Type III anodized forged body. Differential 1.88- and 1.75-inch Thermlock pistons combine a defined hydraulic volume with an insulating barrier behind the pads. Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977; it is based in Camarillo, California, and its component range includes 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: 120-13156. Component: Forged Superlite Internal 4 ST caliper.\u003c\/li\u003e\n\u003cli\u003eSupply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.\u003c\/li\u003e\n\u003cli\u003eBrake pad profile 7420; select friction material for the actual operating conditions.\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: 1\/8-27 NPT. Use a fitting with the correct thread and sealing seat.\u003c\/li\u003e\n\u003cli\u003eCaliper weight: approximately 5.2 lb.\u003c\/li\u003e\n\u003cli\u003e3.50-inch lug mounting pattern, left hand; mounting height 2.85 inches and hole size 0.45 inch.\u003c\/li\u003e\n\u003cli\u003e4 Thermlock pistons with 1.88\/1.75-inch bore groups. The specified effective area is 5.18 sq in.\u003c\/li\u003e\n\u003cli\u003ePiston dust boots: not fitted.\u003c\/li\u003e\n\u003cli\u003eType III anodize finish on a forged aluminum caliper body.\u003c\/li\u003e\n\u003cli\u003eThe rotor channel is specified for 0.81-inch nominal width. Rotor outside diameter: 11.75 to 13.06 inches. Specified rotor-width limits: 0.75–0.84 inch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eConfirm the left-side installation and rotor rotation before matching the existing caliper. Its 0.75–0.84-inch rotor-width range, 3.50-inch mounting pattern and pad sweep must agree with the rotor and bracket; the body finish does not identify these dimensions.\u003c\/p\u003e\u003cp\u003ePMB Performance brings more than 20 years of experience to brake-part selection. Include the existing caliper, rotor and mounting details when requesting help with this assembly.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764016906418,"sku":"120-13156","price":457.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Forged_Superlite_Internal_4_ST-xl_a4cd8583-0813-4727-84b9-e2f0d02f6f9a.jpg?v=1792508653","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-13156","provider":"PMB Performance","version":"1.0","type":"link"}