Wilwood 120-8062-RRD Billet Narrow Superlite Radial Mount Disc Brake Caliper Red - 4R Right

The Wilwood 120-8062-RRD Billet Narrow Superlite 4R (BNSL4R) is a high-performance radial mount disc brake caliper finished in red, designed for the right side of the vehicle. The Superlite caliper series has long been the benchmark in short track, late model, modified, and open wheel competition, and has earned a strong reputation in road-race, off-road, rally, and sport driving applications as well.

The BNSL4R body is precision CNC machined from high-strength billet aluminum using computer-generated solid modeling and FEA stress analysis technology. The result is an exceptionally rigid, lightweight caliper body that delivers high clamping efficiency with minimal deflection under load. Closed-end bridges feature a radial transition to the piston housings — eliminating machined steps and sharp shoulders in this critical area to measurably increase overall body strength and resistance to deflection. Center bridge bolts replace traditional cotter pins for additional support, quick pad access, and positive brake pad retention.

Key Features:

• Radial mounting simplifies adaptation and provides two planes of adjustment for accurate disc alignment
• 1.25" piston diameter with four stainless steel pistons for controlled clamping force
• 1.10" rotor width compatibility
• SRS stainless steel bridge plates eliminate bridge wear from pad gouging and extend caliper service life; spring-loading action eliminates pad rattle and dampens vibration harmonics that contribute to brake squeal
• Stainless steel pistons resist corrosion and retard heat transfer from the pads to the caliper body, seals, and fluid
• High-temperature, square-faced O-ring bore seals provide maximum sealing area and controlled piston retraction on release
• Internal fluid crossovers and two-piece bleed screw assemblies protect against track debris damage and provide long, reliable service life
• Compatible with the full range of Wilwood PolyMatrix pad compounds to match brake response and heat range to any application
• Uses 7420-type bridge bolt brake pads shared with the Superlite 6 piston caliper series
• Red anodized finish, right-side (passenger side) orientation
• Starting weight: 4.40 lbs

The BNSL4R is a direct replacement for all Wilwood Superlite and compatible competitive-brand calipers with 3.50" centered mounting tabs. It is engineered to deliver superior stopping power with less pedal travel, making it an ideal choice for both serious competition builds and high-performance street and track applications.