Wilwood 140-16118 Forged Superlite 4R Road Race Front Big Brake Kit 13.06in Rotors with Braided Lines

The Wilwood 140-16118 Forged Superlite 4R Road Race Front Big Brake Kit is purpose-built for dedicated road racing, delivering championship-proven stopping power through an engineered combination of forged aluminum calipers, two-piece GT series rotors, and race-spec friction materials.

FSL4R/ST Four-Piston Calipers:

• Forged aluminum caliper body with Type III Mil-Spec hard anodized medium gray finish for superior wear resistance and corrosion protection
• Thermlock® pistons reduce heat transfer from pads to caliper, extending service life and improving fade resistance
• Internal damper springs with controlled retraction, high-temperature piston seals ensure consistent pedal height throughout competition
• Piston volumes matched for full compatibility with OE power brake boosters and master cylinders; easily configured for manual brake conversions and balance bar pedals with appropriately sized master cylinders

Spec37 Alloy GT Competition Series Rotors:

• 13.06" diameter directional vane lug mount rotors deliver high cooling efficiency
• Rugged durability and thermal stability under sustained high-heat race conditions
• Forged aluminum dynamic lug mount hats mount rotors directly to OE hubs, minimizing unsprung and rotating weight

Complete Kit Contents:

• Two FSL4R/ST four-piston calipers with Type III hard anodized gray finish
• Two Spec37 alloy GT series 13.06" directional vane rotors with forged aluminum lug mount hats
• High-temperature, high-friction endurance race compound brake pads selected specifically for this application
• Caliper mounting brackets securing calipers to OE spindle locations — no modifications required
• Stainless steel braided flex lines for a complete, race-ready installation
• All premium-grade fasteners included

This bolt-on big brake kit installs in the stock caliper location without spindle modification, making it an ideal upgrade path for serious road racing builds. The complete system is compatible with both OE power brake setups and manual balance bar pedal configurations.