Wilwood 140-10909 FNSL4R Forged Narrow Superlite 4R Rear Big Brake Kit with Parking Brake 12.88"

The Wilwood 140-10909 Forged Narrow Superlite 4R (FNSL4R) Rear Big Brake Kit delivers a complete, high-performance disc brake upgrade for muscle car rear axles that require an integrated parking brake. Engineered as a true bolt-on solution, this kit is designed to complement front big brake upgrades on custom builds, show cars, and high-performance street machines.

Key Features:

• FNSL4R 4-Piston Calipers ? Forged billet aluminum construction with oversize pistons for maximum clamping force and even pad wear
• 12.88" Two-Piece Rotor ? Lightweight two-piece design promotes rapid heat dissipation compared to conventional one-piece rotors
• BP-10 High-Performance Brake Pads ? Optimized compound delivers balanced, fade-resistant braking performance for street and performance use
• Integrated Drum-Style Parking Brake ? Internal shoe system is neatly concealed within the rotor hat for a clean, factory-style appearance with superior static holding power
• Optional Finishes & Rotor Styles ? Available in multiple caliper finish options and rotor designs (drilled, slotted, or smooth) to match your build's style and performance requirements
• Bolt-On Installation ? Specifically engineered to fit popular muscle car rear axle configurations; installs with common hand tools

The FNSL4R caliper features forged aluminum construction for exceptional strength-to-weight ratio, while the fixed 4-piston design applies clamping force evenly to both sides of the rotor for consistent, fade-free braking. The hidden internal parking brake shoe system eliminates the need for an external drum assembly, keeping the installation tidy and unobtrusive. This kit is an ideal upgrade for builders seeking to match a front big brake kit and retain full street-legal parking brake functionality.