Wilwood 120-11133 Forged Superlite FSLI Brake Caliper - 6-Piston

The Wilwood 120-11133 FSLI Superlite Forged Brake Caliper is a 6-piston disc brake caliper from the Wilwood Superlite series, which is used in short track, late model, modified and open wheel competition, as well as road-race, off-road, rally and sport driving applications. The FSLI series is the latest development of the Superlite family.

Key Features:

• Stress-flow forged body: each body is forged from premium grade aluminum alloy billet. The forging re-aligns the metal's internal grain structure to follow the contour of the caliper body, avoiding the interruptions that occur when machining a straight block billet.
• Engineered body design: developed with computer solid modeling and stress analysis. Closed end bridges with a radial transition to the piston housings eliminate machined steps and sharp shoulders, increasing body strength and resistance to deflection under load.
• Center bridge bolts: replace cotter pins for added support, quick access and positive brake pad retention.
• Replaceable SRS stainless steel bridge plates: prevent bridge wear from pad gouging and extend caliper body life. Their spring-loading action reduces pad rattle and dampens vibration that contributes to brake squeal.
• High-temperature square faced o-ring seals: provide positive sealing, controlled piston retraction and long service life in high heat conditions.
• Stainless steel pistons: resist corrosion and slow heat transfer from the pads.
• Two-piece bleed screw assemblies: offer long service life and are easily replaced if necessary.

Mounting and Pad Compatibility:

• Direct replacement for Wilwood Superlite calipers and similar competitive brand calipers with 3.50" centered mounting tabs.
• FSL calipers use the same 7420 type bridge bolt brake pad used in all Superlite 6-piston calipers.
• The full range of PolyMatrix pad compounds is available to match brake response and heat range to the application.

The FSLI design delivers better stopping power with less pedal travel, backed by Wilwood's clamping force, structural deflection and volume displacement testing.