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Product details
A 1.10-inch rotor-width specification and 1.62/1.12/1.12-inch piston bores identify this left Wilwood FNSL6R-ST brake caliper. The anodized finish is applied to the exact component described below; match the mounting bracket before replacement. The Forged Narrow Superlite 6R-ST uses radial mounting and six Thermlock insulated pistons. Radial mounting permits bracket adjustment but still requires accurate rotor centering, mounting height and pad sweep. Check the differential bores when matching an existing brake system. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. Its disc brake design and manufacturing work includes master cylinders, valves, fittings and brake lines as well as rotors and calipers. The company serves motorsport, street-performance and specialized applications in which the entire brake system determines component choice.
Technical Details
- Manufacturer part number: 120-16846
- Component: Forged Narrow Superlite 6 Radial Mount; one individual caliper
- Placement: Left
- Construction and finish: Forged aluminum; Type III Anodize
- Mounting interface: Radial; mounting centers 5.98 inches
- Mounting-hole diameter: 0.39 inches
- Mount height: 1.45 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Nominal rotor width: 1.10 inches
- Rotor width range: 1.00–1.10 inches
- Rotor diameter range: 11.75–14.00 inches
- Caliper weight reference: 5.0 lb
- Pistons: 6; Thermlock insulated; bore dimensions 1.62/1.12/1.12 inches
- Hydraulic piston area: 4.04 square inches
- Dust boots: No
- Brake pad shape: 7416; shape number does not specify a friction compound
Fitment & Compatibility
Match the 5.98-inch radial attachment to the existing bracket, then check caliper centering over the 1.10-inch nominal-width rotor. Use the left-hand caliper and keep the bleed arrangement in the specified orientation. The 1/8-27 NPT connection must use the correct fitting and seal. Check the full wheel envelope with the actual bracket and rotor installed.
Wilwood caliper specifications · Wilwood technical reference
Contact PMB Performance for a component comparison using the actual caliper, bracket and rotor measurements. Our team has over 20 years of experience with parts and fitment details.
