Wilwood Superlite FSLI4 Differential Bore Caliper for High Temp Pad Wear

Wilwood Superlite FSLI4 Differential Bore Caliper for High Temp Pad Wear Optimize pad life and thermal control with the Wilwood Superlite FSLI4 caliper series. Engineered for sustained, heavy braking—on dirt and asphalt ovals, rally stages, off‑road, and road courses—these calipers pair differential bore piston geometry with a lightweight Superlite body to minimize pad taper and maintain consistent braking performance under extreme conditions. Key Features Differential bore pistons: Compensate for leading‑edge loading and temperature gradients across the pad face to reduce taper wear and extend pad life. High‑temperature performance: Designed for sustained hard braking where pad and caliper temperatures climb rapidly. Thermlock® option (FSLI4/ST): Optional Thermlock® pistons block heat transfer from pads to caliper, fluid, and seals, lowering temperatures up to 25% vs. standard stainless pistons. Versatile application: Ideal for oval racing, rallying, off‑road, and road course use where repeatable, fade‑resistant braking is required. Why Choose FSLI4 The Superlite FSLI4 delivers a balanced combination of thermal management and even pad wear. Whether you prioritize longer pad life, reduced fluid temperature, or reliable braking under repeated high‑heat cycles, these calipers provide proven performance and durability for competitive and demanding driving environments.