{"product_id":"wilwood-st-fsl4r-caliper-1-25-81-rotor-ano","title":"Wilwood Forged Superlite 4R Brake Caliper - 1.25 in Piston Bore \/ 0.81 in Rotor Thickness \/ ST Anodized | 120-13575","description":"\u003cp\u003eThe Wilwood Forged Superlite 4R Brake Caliper (part number 120-13575) is a hydraulic brake caliper configured for the rotor and mounting dimensions listed below. It uses radial mounting with a listed nominal rotor thickness of 0.81 in.\u003c\/p\u003e\u003cp\u003ePiston sizing, rotor thickness, and mounting geometry determine how this caliper integrates with the brake system. A matching pad shape identifies the pad interface, while compound selection remains a separate operating-temperature decision.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePiston count: 4.\u003c\/li\u003e\n\u003cli\u003ePiston material: Thermlock.\u003c\/li\u003e\n\u003cli\u003eBody material: Forged Aluminium.\u003c\/li\u003e\n\u003cli\u003eFinish: Type III Anodize.\u003c\/li\u003e\n\u003cli\u003eMounting type: Radial.\u003c\/li\u003e\n\u003cli\u003eMounting side: Universal.\u003c\/li\u003e\n\u003cli\u003eMounting centers: 5.98 in.\u003c\/li\u003e\n\u003cli\u003eListed piston bore sizes: 1.25 \/ 1.25 in.\u003c\/li\u003e\n\u003cli\u003eNominal rotor thickness: 0.81 in.\u003c\/li\u003e\n\u003cli\u003eRotor thickness range: 0.75–0.90 in.\u003c\/li\u003e\n\u003cli\u003eRotor diameter range: 11.75–14.00 in.\u003c\/li\u003e\n\u003cli\u003eBrake pad shape: 7420.\u003c\/li\u003e\n\u003cli\u003eFluid inlet thread: 1\/8-27 NPT.\u003c\/li\u003e\n\u003cli\u003eDust boots: Not fitted.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSelection and installation: Confirm rotor clearance, bracket alignment, wheel clearance, and the hydraulic connection before installation. Check whether pads and installation hardware are supplied with the specific assembly being purchased.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67996869951738,"sku":"WIL120-13575","price":485.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/f61c0ea8e07463b175b9e8fef5ed98d0L.jpg?v=1793166890","url":"https:\/\/lgcracing.com\/products\/wilwood-st-fsl4r-caliper-1-25-81-rotor-ano","provider":"Legacy Racing","version":"1.0","type":"link"}