Wilwood 140-18160-R Forged Narrow Superlite Big Brake Kit Rotor - 4R Rear 12.88 6-Lug Red

The Wilwood 140-18160-R is a Forged Narrow Superlite 4R (FNSL4R) rear disc brake conversion kit designed for 1971–1991 Chevrolet Blazer axles with a 6-lug bolt pattern. This big brake kit delivers a complete disc/drum hybrid solution, replacing factory rear drums while retaining a fully functional internal parking brake — all in a clean, performance-ready package finished with a bold red powder-coat caliper.

At the heart of this kit are Wilwood's FNSL4R four-piston forged narrow calipers, paired with a 12.88" two-piece vented rotor and high-performance BP-10 compound brake pads. Together, these components deliver optimized and balanced braking force, ideal for complementing front big brake upgrades on custom builds, show cars, and high-performance street machines.

The integrated internal shoe-style parking brake is neatly concealed within the rotor hat, providing a clean installation with superior static holding power — no bulky external e-brake hardware required.

Kit Features:

• Caliper: FNSL4R Forged Narrow Superlite 4-piston caliper — Red powder-coat finish
• Rotor: 12.88" two-piece vented disc/drum rotor with internal parking brake
• Brake Pads: High-performance BP-10 compound
• Bolt Pattern: 6-lug
• Application: 1971–1991 Chevrolet Blazer rear axle
• Neatly hidden internal drum-style parking brake for clean aesthetics
• Engineered as a direct bolt-on big brake upgrade
• Compatible with custom, show, and high-performance street builds

Wilwood's FNSL4R rear disc kits are the go-to solution for builders seeking maximum rear braking performance on classic GM truck and SUV axles without sacrificing parking brake functionality or visual appeal.