Wilwood – Forged Superlite Internal Brake Calipers

Wilwood – Forged Superlite Internal Brake Calipers (FSLI Series)

The Wilwood Forged Superlite Internal (FSLI) Calipers are the benchmark braking solution for short track, Late Model, Modified, and open wheel competition, while also excelling in road-race, off-road, rally, and performance driving applications. The FSLI series represents the latest evolution of Wilwood’s proven Superlite platform.

These calipers feature internal fluid ports, eliminating external crossover tubes and potential failure points. Dual bleed screw assemblies allow the caliper to be mounted right or left, leading or trailing, providing maximum installation flexibility.

Each caliper body is stress-flow forged from premium aluminum alloy billets, realigning the internal grain structure to follow the contours of the caliper body. This process produces exceptional strength, stiffness, and resistance to deflection compared to machined billet designs.

The closed-end bridge design and center bridge bolts improve rigidity, reduce pedal travel, and provide quick pad access with secure retention. Extensive testing confirms superior stopping power and improved driver confidence.

Features & Benefits

• Forged Superlite Internal design – Industry benchmark for short-track racing
• Stress-flow forged aluminum body – Maximum strength with minimal weight
• Internal fluid ports – Eliminates external crossover tubes
• Dual bleed screw configuration – Right/left and leading/trailing mounting
• Closed-end bridge design – Increased stiffness and reduced deflection
• Center bridge bolts – Secure pad retention with quick service access
• Improved braking efficiency – Less pedal travel with more stopping power

Caliper Specifications

• Caliper Series: Forged Superlite Internal (FSLI)
• Mounting Bolt Pattern: 3.50"
• Piston Material: Stainless Steel
• Body Material: Stress-flow forged premium aluminum alloy
• Application: Short track, Late Model, Modified, open wheel, road race, off-road