Wilwood Caliper-Narrow Superlite 4R - Red 1.75/1.75in Pistons 1.10in Disc

The Forged Narrow Superlite 4R (FNSL4R) is Wilwood's newest version for the Superlite caliper series, adding radial mounting for simplified adaptation and accurate alignment. It integrates "Big Brake" style with Wilwood's latest technology for powerful stopping in extreme environments across a broad range of vehicle applications. The caliper features a stress-flow forged body from premium grade aluminum alloy billets, making it extremely durable. It is available in different piston bore sizes and can be used as a front or rear caliper. Standard FNSL4R calipers feature one-piece stainless steel pistons for slow heat transfer and high corrosion resistance. They can be upgraded with Wilwood's Thermlock pistons for further heat reduction. Each FNSL4R is equipped with SRS bridge plates to eliminate bridge wear and pad rattle, and dampen harmonic vibrations that contribute to pad squeal. It also features two-piece bleed screws and internal fluid crossovers to prevent damage, and high-temperature, square-faced bore seals for controlled piston retraction.