Wilwood 140-18366-DR Forged Narrow Superlite 6R Front Big Brake Kit for Mustang II Roadster Shop Spindle, 12.88" SRP Rotor, Red

The Wilwood 140-18366-DR is a complete front big brake kit built around the Forged Narrow Superlite 6R (FNSL6R) six-piston caliper, engineered specifically for Mustang II suspension platforms using the Roadster Shop RSF-2 Forged 6000 Series spindle on SPEC and REVO RS chassis builds. This kit delivers serious big-brake stopping performance with modern engineering and show-quality aesthetics.

At the heart of this kit is the FNSL6R forged six-piston caliper finished in red powdercoat, paired with a 12.88" diameter SRP (Street & Race Performance) drilled iron rotor. The SRP series rotor features a 48-vane vented construction for superior heat dissipation and a lightweight two-piece aluminum hat for reduced unsprung weight. The drilled rotor face aids in outgassing and provides a distinctive high-performance appearance.

Key Features:

• Forged Narrow Superlite 6R (FNSL6R) caliper — six-piston forged aluminum construction for maximum clamping force with reduced weight
• 12.88" SRP drilled iron rotor — 48-vane vented design for exceptional cooling and fade resistance
• Two-piece rotor assembly — lightweight aluminum hat reduces unsprung and rotating mass
• BP-10 series street performance brake pads — deliver quick pedal response, high fade resistance, and extended pad life
• Red powdercoat caliper finish — aggressive, show-quality appearance visible through open-spoke wheels
• Designed for Roadster Shop RSF-2 forged spindle — fits SPEC and REVO RS chassis applications
• Increased six-piston swept volume provides stronger clamping with less pedal effort
• Compatible with 17" and larger wheels

This kit is the ideal upgrade for custom street machines and high-performance builds based on the Mustang II front suspension platform. All hardware required for installation is included. Optional track-only pad compounds and rotor styles are available by custom order.