Wilwood 140-18160-DR Forged Narrow Superlite Rear Disc/Drum Brake Kit Rotor - 4R 12.88 6-Lug Red

The Wilwood 140-18160-DR is a Forged Narrow Superlite 4R (FNSL4R) rear disc/drum big brake conversion kit featuring a 12.88" SRP drilled and slotted two-piece rotor with a red powder-coated caliper finish. Designed for 6-lug rear axle applications, this kit delivers a complete, high-performance brake upgrade for custom builds, show machines, and high-performance street vehicles that require a functional parking brake.

At the heart of this kit is Wilwood's FNSL4R four-piston forged aluminum caliper, paired with a 12.88" SRP (Slotted & Drilled) two-piece vented iron rotor for exceptional heat dissipation and consistent stopping power. High-performance BP-10 compound brake pads are included to deliver optimized, balanced braking performance that complements front big brake upgrades.

Key Features:

• FNSL4R four-piston forged aluminum caliper in red powder coat finish
• 12.88" SRP drilled and slotted two-piece vented rotor for maximum cooling and bite
• BP-10 high-performance brake pad compound included
• Internal drum-style parking brake integrated into the rotor hat for a clean, hidden installation
• 6-lug axle flange compatibility for direct bolt-on fitment
• Requires a minimum 17" wheel diameter for proper caliper clearance
• Disc/drum design retains full parking brake functionality without external hardware clutter

The integrated internal shoe parking brake system keeps the installation tidy while providing reliable static holding power. The SRP rotor's drilled and slotted surface enhances pad bite, reduces fade under repeated hard stops, and adds an aggressive visual appearance behind open-spoke wheels. Optional caliper finishes and rotor designs are available across the Wilwood lineup, allowing builders to tailor both performance and aesthetics to their specific build.