Wilwood 120-11131-BK Forged Superlite 6 Piston Rear Caliper Black

The Wilwood Forged Superlite 6 (FSLI) caliper represents the pinnacle of racing brake technology, combining stress-flow forged construction with proven competition features. Each caliper body is forged from premium grade aluminum alloy billets, with the forging process realigning the metal's internal grain structure to flow within the contour of the caliper body. This eliminates internal stresses and grain interruptions that occur in conventional machined billet construction, resulting in superior strength and rigidity.

Advanced Design Features:

• Stress-flow forged aluminum body for maximum strength-to-weight ratio
• Closed end bridges with radial transitions eliminate stress concentrations
• Center bridge bolts replace cotter pins for quick pad access and positive retention
• Replaceable SRS stainless steel bridge plates prevent pad gouging and extend service life
• Spring-loading action of SRS plates eliminates pad rattle and brake squeal
• Stainless steel pistons resist corrosion and reduce heat transfer
• High-temperature square-faced O-ring seals provide controlled piston retraction
• Two-piece bleed screw assemblies for reliable, serviceable operation

Specifications:

• 3.50" centered mounting tabs for direct Superlite replacement
• Uses 7420 type bridge bolt brake pads (compatible with all Superlite 6 piston models)
• Available with full range of Wilwood PolyMatrix pad compounds
• Black powder coated finish

Proven in short track, late model, modified, open wheel, road racing, off-road, and rally competition, the FSLI caliper delivers superior stopping power with reduced pedal travel. Computer-generated solid modeling and stress analysis confirm measurable improvements in body strength and resistance to deflection under load compared to conventional designs.