Wilwood Caliper-Forged Superlite FSL4R/ST Aluminum 1.88/1.75in Pistons .81in Disc Ano - Right

This listing is for a single Wilwood FSL4R/ST forged aluminum brake caliper, designed for the right side. It includes differential bore pistons (1.88-inch and 1.75-inch) and Thermlock® pistons, which help manage heat during hard braking. The caliper also features a wear-resistant Type III hard anodize finish for durability.

The differential bore pistons are a smart design choice. They help compensate for uneven pad loading and temperature differences across the brake pad surface. This means less taper wear, especially when you're braking hard for extended periods, like on dirt or asphalt ovals, or in off-road, rally, and road course racing. The ST models, like this one, take heat protection a step further with Thermlock® pistons. These pistons are engineered to block heat transfer from the brake pads, keeping the caliper, brake fluid, and seals cooler by up to 25% compared to standard stainless steel pistons. This improved heat management is crucial for consistent braking performance under demanding conditions.

This caliper is a popular choice for various forms of racing and high-performance driving where sustained hard braking is common. Its robust construction and advanced thermal management features make it a solid option for those pushing their vehicles to the limit.