Wilwood 140-14277 FNSL6R Street Performance Big Brake Front Disc Brake Kit

The Wilwood 140-14277 is a Forged Narrow Superlite 6R (FNSL6R) Street Performance Big Brake Front Disc Brake Kit engineered for traditional non-ABS spindles on American muscle cars and vintage rods. Pairing billet forged six-piston radial mount calipers with large-diameter 13"–14" rotors, this kit delivers a powerful combination of maximum stopping performance and show-quality style.

Designed exclusively for use with 17" and larger wheels, the SL6 caliper design complements wheel, tire, and suspension upgrades on custom builds, dual-purpose street and track machines, and high-performance show vehicles alike. The forged narrow caliper body provides an extremely durable and efficient profile without sacrificing clamping force.

Key Features:

• Billet forged six-piston Narrow Superlite 6R (FNSL6R) radial mount calipers
• Large-diameter 13"–14" rotor compatibility for maximum heat dissipation and braking torque
• Engineered for traditional non-ABS spindle applications
• Requires 17" or larger wheels for proper clearance
• Multiple optional caliper finishes available to suit any build aesthetic
• Multiple rotor designs available — including drilled and slotted options
• Ideal for American muscle cars, vintage rods, custom street machines, and track-day builds

Wilwood's FNSL6R kits are application-specific by design, simplifying installation while ensuring optimized braking performance for every individual build. Whether the goal is winning at the track or turning heads at a car show, the Wilwood 140-14277 big brake kit delivers the stopping power and visual impact that serious enthusiasts demand.