Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The red Narrow Superlite 4 pairs a nominal 1.10-inch rotor-width channel with four 1.25-inch stainless pistons. Equal bores permit either-side use with proper bleeding orientation. Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977; it is based in Camarillo, California, and its component range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines.
Technical Details
- Manufacturer part number: 120-11783-RD. Component: Forged Narrow Superlite 4 Radial Mount caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- 5.98-inch radial mounting pattern, universal; mounting height 1.45 inches and hole size 0.39 inch.
- Brake pad profile 7416; select friction material for the actual operating conditions.
- Red powder coat finish on a forged aluminum caliper body.
- Piston dust boots: not fitted.
- Caliper weight: approximately 5.0 lb.
- 4 stainless steel pistons with 1.25-inch bore diameter. The specified effective area is 2.46 sq in.
- Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
- The rotor channel is specified for 1.10-inch nominal width. Rotor outside diameter: 11.75 to 14.00 inches. Specified rotor-width limits: 1.00–1.10 inch.
Fitment & Compatibility
Match the 2.46-square-inch area to the intended axle balance. Check 7416 pad compatibility and the 5.98-inch radial bracket offset before choosing a replacement or conversion arrangement.
PMB Performance brings more than 20 years of experience to brake-part selection. Include the existing caliper, rotor and mounting details when requesting help with this assembly.
