Wilwood 140-18154 Front Big Brake Kit FNSL6R 12.19" Rotor 6-Lug

The Wilwood 140-18154 is an application-specific front big brake kit built around the Forged Narrow Superlite 6R (FNSL6R) six-piston caliper and a 12.19" rotor designed for 1971–1991 Blazer and popular truck platforms. This kit delivers a substantial upgrade in braking capacity over stock components, making it ideal for builds that include wheel, tire, and suspension upgrades.

Key Features:

• Forged Narrow Superlite 6R (FNSL6R) six-piston caliper — Wilwood's high-performance forged aluminum caliper engineered for maximum clamping force and minimal flex
• 12.19" big rotor — Increased rotor diameter for greater heat dissipation and improved stopping power over OE rotor sizes
• 6-lug hub compatibility — Designed to work with the factory 6-lug bolt pattern on applicable truck applications
• Application-specific engineering — Engineered for straightforward installation with full compatibility with the OE master cylinder output and ABS systems where equipped
• Optional caliper finishes and rotor designs — Personalize the look and braking performance to match your build style and requirements
• Complements performance upgrades — Pairs seamlessly with aftermarket wheel, tire, and suspension modifications

Wilwood's FNSL6R front brake kits are designed and manufactured in the USA with a focus on precision fitment and reliable high-performance braking. This kit provides a complete, bolt-on solution for upgrading the front braking system on 1971–1991 Blazer and related truck applications.