Caliper FSLI .810 Rotor 1.12 Piston Hard Ano

The Wilwood Caliper FSLI .810 Rotor 1.12 Piston Hard Ano represents precision engineering for high-performance braking systems where stopping power, weight savings, and thermal management are non-negotiable. This four-piston forged aluminum caliper is engineered for serious enthusiasts who demand reliable, fade-resistant braking in street, track, and motorsport applications. Whether you're upgrading a street rod, prepping a track car, or building a competition vehicle, this caliper delivers the modulation and bite required for confident deceleration in demanding driving conditions.

Built from forged aluminum and finished in hard anodized gray, the FSLI design maximizes rigidity while minimizing unsprung weight—a critical advantage when reducing brake system mass without sacrificing stiffness. The four-piston configuration distributes clamping force evenly across the rotor surface, enabling precise pressure modulation and reducing brake bias tuning time. Designed to work with an 0.810-inch thick rotor and featuring a radial mount geometry, this caliper accommodates the Superlite rotor format common in serious performance brake upgrades. Hard anodizing provides superior corrosion resistance and durability compared to standard anodizing, ensuring long service life even in salt-air or high-moisture environments.

Buyers upgrading classic cars, hot rods, and competition vehicles will appreciate the compact footprint and lightweight design that don't compromise on thermal dissipation or stopping authority. The radial mount configuration simplifies installation on custom spindles and allows easy integration with performance cooling ducts. Weighing 5.55 pounds per caliper, this unit reduces rotational inertia compared to heavier OEM designs, improving brake response and reducing wheel speed fluctuation under hard braking. Verify rotor thickness (0.810 inches), piston diameter (1.12 inches), and radial mount compatibility with your specific brake kit before ordering to ensure seamless fitment and optimal performance.