Wilwood 120-11133-BK Superlite FSLI 6-Piston Rear Brake Caliper Black

The Wilwood Superlite FSLI (Forged Superlite Internal) brake caliper represents the pinnacle of high-performance braking technology for short track, late model, modified, open wheel, road-race, off-road, rally, and sport driving applications. This 6-piston rear caliper combines innovative stress-flow forging technology with proven performance features to deliver superior stopping power and reduced pedal travel.

Advanced Forging Technology:

Each caliper body is stress-flow forged from premium grade aluminum alloy billets, a process that re-aligns 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 traditional machined billet construction, creating the strongest possible aluminum caliper body available.

Key Features:

• Stress-flow forged aluminum construction for maximum strength and minimal deflection under load
• Computer-designed FSL body with closed end bridges and radial transitions to piston housings
• Replaceable SRS (Stainless Radial Spring) bridge plates eliminate pad gouging and extend service life
• Spring-loaded SRS plates eliminate pad rattle and dampen vibration for quieter operation
• High-temperature square-faced O-ring seals provide positive sealing and controlled piston retraction
• Stainless steel pistons resist corrosion and reduce heat transfer from brake pads
• Center bridge bolts with quick access and positive pad retention replace traditional cotter pins
• Two-piece bleed screw assemblies for long service life and easy replacement
• Direct replacement for Wilwood Superlite and competitive calipers with 3.50" centered mounting tabs
• Compatible with 7420 type bridge bolt brake pads and full range of PolyMatrix pad compounds

Specifications:

• Caliper Type: 6-piston rear mount
• Mounting: 3.50" centered radial mount
• Finish: Black anodized
• Compatible with multiple rotor widths: 0.81", 1.10", and 1.25"
• Available in piston sizes: 1.12", 1.25", 1.38", 1.62", and 1.75"

Extensively tested for clamping force, structural deflection, and volume displacement, the Superlite FSLI caliper delivers measurably better performance with less pedal travel and superior resistance to deflection under extreme braking conditions.