Wilwood 120-11125 Forged Superlite FSLI Brake Caliper - 6-Piston

The Wilwood Forged Superlite FSLI caliper represents the pinnacle of racing brake technology, delivering proven performance in short track, late model, modified, open wheel, road race, off-road, rally, and high-performance street applications. This advanced caliper design combines stress-flow forged construction with innovative engineering to provide maximum strength and stopping power.

Stress-Flow Forged Construction:

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

Advanced FSL Body Design:

• Computer-generated solid modeling and stress analysis optimization
• 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 additional support and quick pad access
• Delivers 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 prevents pad rattle and dampens vibration harmonics
• High-temperature square-faced O-ring seals provide positive sealing and controlled piston retraction
• Stainless steel pistons resist corrosion and reduce heat transfer from pads
• Two-piece bleed screw assemblies for reliable, long-lasting service

Specifications and Compatibility:

Direct replacement for all Wilwood Superlite and similar competitive calipers with 3.50-inch centered mounting tabs. Uses 7420 type bridge bolt brake pads, compatible with the full range of Wilwood PolyMatrix pad compounds. Available in multiple piston sizes (1.12", 1.25", 1.38", 1.62", 1.75") to accommodate rotor widths of 0.81", 1.10", and 1.25".

Engineered for racers and enthusiasts who demand maximum braking performance, structural integrity, and consistent pedal feel under the most demanding conditions.