Wilwood 120-11130 FSLI Superlite 6-Piston Forged Brake Caliper

The Wilwood FSLI Superlite caliper represents the pinnacle of brake caliper engineering for short track, late model, modified, and open wheel racing applications. This high-performance brake caliper also excels in road racing, off-road, rally, and aggressive sport driving conditions where maximum stopping power and durability are essential.

Stress-Flow Forged Construction:

Each FSLI caliper body is stress-flow forged from premium grade aluminum alloy billets, a manufacturing process that realigns the metal's internal grain structure to flow within the contour of the caliper body. This eliminates the internal stresses and grain interruptions that occur with conventional billet machining, creating an exceptionally strong and deflection-resistant caliper body.

Advanced FSL Body Design:

• Computer-generated solid modeling and stress analysis optimized design
• Closed end bridges with radial transition to piston housings
• Eliminates machined steps and sharp shoulders for superior strength
• Center bridge bolts replace cotter pins for quick pad access and positive retention
• Proven to deliver better stopping power with reduced pedal travel

Premium Performance Features:

• Replaceable SRS stainless steel bridge plates prevent bridge wear from pad gouging
• Spring-loading action eliminates pad rattle and reduces brake squeal
• High-temperature square-faced O-ring seals for positive sealing and controlled piston retraction
• Stainless steel pistons resist corrosion and limit heat transfer
• Two-piece bleed screw assemblies for reliable, long-term service
• Direct replacement for Wilwood Superlite and similar competitive calipers with 3.50" centered mounting tabs

Specifications and Compatibility:

FSLI calipers are available in multiple piston configurations including 1.75", 1.62", 1.38", 1.25", and 1.12" piston sizes, designed for .81", 1.10", and 1.25" rotor widths. Uses 7420 type bridge bolt brake pads compatible with all Superlite 6-piston calipers. The full range of Wilwood PolyMatrix pad compounds is available to match brake response and heat range to your specific application requirements.