Wilwood Caliper-Forged Superlite I4-ST 1.88/1.75in Pistons .81in Disc

If you're pushing your vehicle hard on the track, in off-road conditions, or on rally stages, managing brake heat is crucial. The Wilwood Forged Superlite I4-ST caliper is built to handle those demanding situations. It uses a combination of advanced piston technology to keep your brakes performing consistently, even under heavy use.

This caliper features differential bore pistons, meaning the pistons aren't all the same size. This design helps compensate for the uneven pressure and heat distribution that happens across the brake pad during hard braking, which reduces uneven pad wear. On top of that, the 'ST' in the name means it includes Thermlock® pistons. These special pistons are designed 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 key for sustained braking performance.

These calipers are a popular choice for serious drivers in dirt and asphalt oval racing, as well as for many off-road, rally, and road course applications where brake fade is a concern. They are well-built for the rigors of competition and high-performance driving.