Wilwood 1.25-Inch Rotor Width Forged Superlite Internal Caliper, 1.75-Inch Bore / Type III: Gray Superlite caliper with white Wilwood lettering, a central bridge bolt and the upper pad opening visible.

Wilwood 1.25-Inch Rotor Width Forged Superlite Internal Caliper, 1.75-Inch Bore / Type III

SKU: 120-11136

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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

The wide-rotor FSLI pairs a nominal 1.25-inch channel with four equal 1.75-inch stainless pistons. This Type III anodized version retains internal fluid passages and the 7420 pad shape with 4.80 square inches of effective area. Camarillo, California is home to Wilwood Engineering, the disc brake company Bill Wood founded in 1977. Its design and manufacturing range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized brake systems.

Technical Details

  • Manufacturer part number: 120-11136. Component: Forged Superlite Internal caliper.
  • Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
  • Construction and surface: forged aluminum housing finished in Type III anodize.
  • Pad fit is type 7420. Match the pad dimensions and compound to the rotor and intended braking conditions.
  • Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
  • Nominal rotor width 1.25 inch; compatible outside diameter from 11.75 through 13.06 inches. Specified rotor-width limits: 1.19–1.38 inch.
  • Caliper weight: approximately 5.2 lb.
  • Bracket interface: 3.50-inch lug centers with 0.45-inch holes. Specified mount height: 2.85 inches; orientation: universal.
  • Piston dust boots: not fitted.
  • Bore configuration 1.75 inches across 4 pistons; piston material: stainless steel. Hydraulic effective area: 4.80 square inches.

Fitment & Compatibility

Locate the wide rotor correctly relative to the 3.50-inch lug bracket. Check the wheel envelope and NPT line connection with the caliper in position, then verify the system's hydraulic requirements.

Ask PMB Performance to check the complete brake arrangement before ordering. Our team brings over 20 years of experience; photographs and measured bracket and rotor dimensions make that check more useful.