Wilwood 120-11127 FSLI Forged Superlite Brake Caliper - 6-Piston

The Wilwood FSLI Forged Superlite brake caliper represents the pinnacle of racing brake technology for short track, late model, modified, and open wheel competition. This innovative caliper also excels in road racing, off-road, rally, and high-performance street applications where maximum stopping power and reliability are essential.

Stress-Flow Forged Construction:

Each FSLI caliper body is stress-flow forged from premium grade aluminum alloy billets. This advanced forging process re-aligns the metal's internal grain structure to flow within the contour of the caliper body, eliminating the stresses and interruptions that occur in traditional machined billet construction. The result is superior strength and resistance to deflection under extreme braking loads.

Advanced FSL Body Design:

• Computer-generated solid modeling and stress analysis engineering
• Closed-end bridges with radial transitions to piston housings
• Eliminates machined steps and sharp shoulders in critical stress areas
• Center bridge bolts replace cotter pins for positive pad retention and quick access
• Measurably increased body strength and reduced deflection under load
• Better stopping power with reduced pedal travel

Premium Performance Features:

• Replaceable SRS stainless steel bridge plates eliminate bridge wear from pad gouging
• Spring-loading action of SRS plates eliminates pad rattle and dampens vibration harmonics
• High-temperature square-faced O-ring seals for positive sealing and controlled piston retraction
• Stainless steel pistons resist corrosion and retard heat transfer from pads
• Two-piece bleed screw assemblies provide reliable, long-life service
• Uses proven 7420 type bridge bolt brake pads with full PolyMatrix compound range

Compatibility and Applications:

FSLI calipers are a direct replacement for all Wilwood Superlite and similar competitive brand calipers with 3.50-inch centered mounting tabs. Available in multiple piston sizes including 1.75", 1.62", 1.38", 1.25", and 1.12" configurations for rotor widths of 0.81", 1.10", and 1.25 inches, allowing precise brake balance tuning for any application.

Engineered and manufactured to Wilwood's exacting standards, the FSLI caliper delivers professional-grade performance and durability for the most demanding racing and performance driving conditions.