Wilwood Caliper-Forged Superlite 4R 1.25/1.25in Pistons 0.81in Disc

The Superlite 4R caliper series is the benchmark in asphalt short track, late model, modified and open wheel competition. It also enjoys prominence in a variety of road-race, rally and sport driving applications. The new FSL4R model series is the latest innovation to this Superlite family of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross-over tubes. The transfer tube has been replaced with two additional bleed screw assemblies which allow symmetrical piston bore models to be mounted either right or left in a leading or trailing position. Differential bore models still require left hand and right hand orientation, but no leading or trailing configuration is necessary.

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Brake Caliper, Forged Superlite 4 Radial Mount, 4-piston, Aluminum, Gray Anodized, Wilwood Logo, Each

Engineered to deliver the pad wear performance advantages of differential bore pistons, Wilwood forged Superlite 4 radial mount calipers also provide ultimate heat protection in the ST models. The differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face. The Thermlock pistons in the ST models block heat transfer in the pads and reduce temperatures in the caliper, fluid, and seals by up to 25 percent over standard stainless steel pistons.

Additional information:
• Billet aluminum caliper material
• Black anodized or nickel plated finish
• Four-piston calipers
• Various rotor thickness and piston diameters available
• Calipers include Wilwood logo