{"product_id":"wilwood-caliper-forged-superlite-1-25in-pistons-0-81in-disc","title":"Wilwood Caliper-Forged Superlite 1.25in Pistons 0.81in Disc","description":"\u003ch4\u003eWilwood Forged Superlite FSLI Caliper with Symmetrical 1.25-Inch Pistons for Short Track and Road Race\u003c\/h4\u003e\n\u003cp\u003eThe Wilwood WIL120-11126 is a Forged Superlite FSLI single caliper with dual symmetrical 1.25-inch pistons and a 0.81-inch disc width capacity. The Forged Superlite series is the benchmark in short track, late model, modified, and open wheel competition, and sees equal prominence in road race, off-road, rally, and high-performance street applications. The FSLI update to the classic Superlite body routes brake fluid internally between the two piston bores, eliminating the external crossover tube used on earlier models and removing a potential leak or damage point from the caliper. Two bleed screw assemblies replace the crossover tube, allowing all symmetrical bore models to be mounted in any combination of left, right, leading, or trailing positions without rerouting fluid lines. The WIL120-11126 is sold as a single caliper. The 1.25-inch piston bore size sits between the 1.12-inch and 1.38-inch options in the FSLI series, providing a slightly higher clamping force than the 1.12-inch variant with the same 0.81-inch rotor width.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInternal fluid ports eliminate external crossover tube for a cleaner, more durable design\u003c\/li\u003e\n\u003cli\u003eTwo bleed screw assemblies allow leading or trailing, left or right mounting in any position\u003c\/li\u003e\n\u003cli\u003eSymmetrical 1.25-inch piston bores for uniform clamping pressure\u003c\/li\u003e\n\u003cli\u003eFits 0.81-inch wide rotors\u003c\/li\u003e\n\u003cli\u003eForged billet aluminum caliper body for maximum strength-to-weight ratio\u003c\/li\u003e\n\u003cli\u003eSuitable for short track, late model, open wheel, road race, rally, and street performance\u003c\/li\u003e\n\u003cli\u003eSold as a single caliper\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e120-11126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWIL120-11126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Bore\u003c\/td\u003e\n\u003ctd\u003e1.25 in (symmetrical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRotor Width Capacity\u003c\/td\u003e\n\u003ctd\u003e0.81 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluid Port Design\u003c\/td\u003e\n\u003ctd\u003eInternal (FSLI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Orientation\u003c\/td\u003e\n\u003ctd\u003eLeft or Right, Leading or Trailing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBleed Screws\u003c\/td\u003e\n\u003ctd\u003e2 (replaces crossover tube)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaliper Material\u003c\/td\u003e\n\u003ctd\u003eForged Billet Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e1 caliper (order 2 for axle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Wilwood WIL120-11126 Forged Superlite FSLI caliper\u003c\/li\u003e\n\u003cli\u003eBleed screws installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eRelated Parts on Our Site\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wilwood-caliper-forged-superlite-1-12in-pistons-81in-disc\" title=\"Wilwood 120-11125 Forged Superlite Caliper 1.12in Pistons\"\u003eWilwood 120-11125 — Forged Superlite FSLI 1.12in Pistons, 0.81in Disc\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wilwood-caliper-forged-superlite-1-38in-pistons-81in-disc\" title=\"Wilwood 120-11128 Forged Superlite Caliper 1.38in Pistons\"\u003eWilwood 120-11128 — Forged Superlite FSLI 1.38in Pistons, 0.81in Disc\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wilwood-wil220-7496-bleed-screw-1-4-28-black\" title=\"Wilwood 220-7496 Bleed Screw 1\/4-28 Black\"\u003eWilwood WIL220-7496 — 1\/4-28 Black Bleed Screw (replacement for this caliper)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAbout Wilwood\u003c\/h4\u003e\n\u003cp\u003eWilwood Engineering has been designing and manufacturing high-performance brake components in Camarillo, California since 1977. Every Wilwood caliper is machined from premium forged billet aluminum and validated through motorsports testing. Wilwood products are trusted by professional teams across SCCA, NASA, and multiple short track and oval disciplines.\u003c\/p\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the Wilwood WIL120-11126?\u003c\/strong\u003e\n\u003cp\u003eThe Wilwood WIL120-11126 is a Forged Superlite FSLI single caliper with dual symmetrical 1.25-inch pistons and a 0.81-inch rotor width capacity. It features internal fluid ports that replace the external crossover tube, and two bleed screw positions for flexible left or right, leading or trailing mounting.\u003c\/p\u003e\n\n\u003cstrong\u003eHow does the 1.25-inch piston compare to the 1.12-inch and 1.38-inch Superlite options?\u003c\/strong\u003e\n\u003cp\u003eA larger piston bore generates higher clamping force for the same line pressure. The 1.25-inch WIL120-11126 produces more clamping force than the 1.12-inch WIL120-11125 and slightly less than the 1.38-inch WIL120-11128, all at the same 0.81-inch rotor width. Choose the piston size based on your application's required braking bias and total system clamping balance.\u003c\/p\u003e\n\n\u003cstrong\u003eCan this caliper be mounted on either side of the axle?\u003c\/strong\u003e\n\u003cp\u003eYes. The symmetrical piston bore and dual bleed screw design allow the WIL120-11126 to be mounted in a leading or trailing position on either the left or right side without rerouting fluid lines.\u003c\/p\u003e\n\n\u003cstrong\u003eIs this caliper sold as a pair?\u003c\/strong\u003e\n\u003cp\u003eNo. The WIL120-11126 is sold as a single caliper. Order two for a complete axle application.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat rotor width does this caliper accept?\u003c\/strong\u003e\n\u003cp\u003eThe WIL120-11126 fits 0.81-inch wide rotors. Confirm your rotor width matches this specification before ordering.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat thread size are the bleed screws?\u003c\/strong\u003e\n\u003cp\u003eWilwood Superlite FSLI calipers use 1\/4-28 threaded bleed ports. The Wilwood WIL220-7496 bleed screw is the correct replacement part for this caliper.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat brake pads are compatible with this caliper?\u003c\/strong\u003e\n\u003cp\u003eThe Forged Superlite accepts a wide range of Wilwood BP-10, BP-20, and BP-30 series pad compounds as well as many third-party pads in the correct caliper width and mounting tab pattern. Consult Wilwood's pad selection guide for the correct pad for your rotor size, weight class, and usage.\u003c\/p\u003e\n\n\u003cstrong\u003eDoes this caliper require a specific mounting bracket?\u003c\/strong\u003e\n\u003cp\u003eYes. This is a universal racing caliper that requires an application-specific or custom bracket to locate it correctly relative to your rotor. Wilwood offers a wide range of application-specific brackets, or the caliper can be used with a fabricated custom bracket sized for your rotor diameter and offset.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eConfirm rotor width (0.81 in) and bracket offset before ordering. Source or fabricate the appropriate mounting bracket for your application.\u003c\/li\u003e\n\u003cli\u003eMount the bracket to the upright or knuckle and torque to specification.\u003c\/li\u003e\n\u003cli\u003eInstall brake pads into the caliper. Position the caliper over the rotor on the bracket.\u003c\/li\u003e\n\u003cli\u003eTorque caliper mounting bolts to bracket specification. Verify even pad-to-rotor clearance on both sides.\u003c\/li\u003e\n\u003cli\u003eConnect the brake line to the inlet port with a new copper sealing washer. Torque the fitting to specification.\u003c\/li\u003e\n\u003cli\u003eBleed the caliper from the outboard bleed screw and confirm a firm, consistent pedal before driving.\u003c\/li\u003e\n\u003cli\u003eBed in pads following the manufacturer's procedure before hard braking use.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":39921325998159,"sku":"WIL120-11126","price":245.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/WIL120-11126-Wilwood-Wilwood-Caliper-Forged-Superlite-1_25in-Pistons-0_81in-Disc-Brake-Calipers-Perf.jpg?v=1714610182","url":"https:\/\/www.blackopsautoworks.com\/products\/wilwood-caliper-forged-superlite-1-25in-pistons-0-81in-disc","provider":"Black Ops Auto Works","version":"1.0","type":"link"}