Wilwood 140-14483 Forged Superlite 4R Big Brake Rear Brake Kit - 14" Slotted Rotors

The Wilwood 140-14483 Forged Superlite 4R Big Brake Rear Brake Kit is an engineered, competition-grade rear braking solution purpose-built for dedicated road racing. Configured as the matched rear complement to Wilwood's AERO6R/ST front race kits, this system is designed around precise front-to-rear brake balance, exceptional heat management, and long-term durability — all without adding unnecessary rotating or unsprung weight to the driveline or rear suspension.

FNSL4R/ST Forged Aluminum Calipers:

• Forged aluminum caliper body with a Type III Mil-Spec hard anodized finish in medium gray
• Hard anodizing delivers superior wear resistance in piston bores and high resistance to abrasion and corrosion throughout
• Thermlock® pistons reduce heat transfer from the brake pads, extending service life and decreasing temperatures in the caliper body, brake fluid, and seals
• Internal damper springs and high-temperature piston seals provide controlled retraction and consistent pedal height under sustained racing conditions
• Piston volumes are matched for full compatibility with the OE master cylinder output and ABS controls
• Fully compatible with manual brake conversions using balance bar pedals and appropriately sized master cylinders

GT Competition Series Rotors & Hats:

• 14.00" diameter, 36-vane directional slotted rotors from Wilwood's GT competition series
• Dynamically mounted to the OE hubs via lightweight forged aluminum hats
• Hats feature the same hard anodized finish as the calipers for superior wear resistance and extended service life at load-bearing surfaces

Kit Includes:

• Pair of FNSL4R/ST forged aluminum 4-piston calipers
• Pair of 14.00" GT competition series 36-vane slotted rotors with forged aluminum hats
• High-temperature, high-friction race compound brake pads
• All required premium-grade hardware and fasteners

The Wilwood 140-14483 is engineered to deliver repeatable, fade-resistant stopping power from start to finish in road racing environments, providing the performance balance and thermal efficiency that serious competition demands.