Wilwood 140-18154-D Forged Narrow Superlite 6R Front Big Brake Kit 12.19" Rotor 6-Lug SRP Drilled

The Wilwood 140-18154-D is a Forged Narrow Superlite 6R (FNSL6R) front big brake kit purpose-built for 1971–1991 Chevy/GMC Blazer and truck applications with a 6-lug bolt pattern. At the heart of this kit is Wilwood's six-piston Forged Narrow Superlite 6R caliper, paired with a 12.19-inch SRP (Street Performance) drilled rotor to deliver a significant upgrade in braking capacity over the factory drum or small-rotor disc setup.

Key Features:

• Forged Narrow Superlite 6R (FNSL6R) six-piston caliper — forged aluminum body for exceptional strength-to-weight ratio and thermal management
• 12.19-inch SRP drilled rotor — improves heat dissipation and reduces brake fade under demanding street and performance driving conditions
• Application-specific engineering — designed for direct bolt-on fitment on 1971–1991 Chevy/GMC Blazer and truck platforms with a 6-lug hub configuration
• OE master cylinder compatible — engineered to work within OEM master cylinder output range, maintaining proper brake bias and pedal feel
• ABS compatible — fully compatible with factory ABS systems where equipped
• Complements wheel, tire, and suspension upgrades — sized to fill larger aftermarket wheels for improved visual presence and performance
• Optional caliper finishes available — choose from a range of Wilwood caliper colors and rotor designs to match your build's style

Wilwood FNSL6R big brake kits are engineered as complete, application-specific systems that eliminate guesswork during installation. Whether building a high-performance street truck or a show vehicle, the 140-18154-D delivers the stopping power and aesthetics to complement any serious build.