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Product details
Select this anodized left Wilwood SX6R-ST brake caliper by the actual radial mounting geometry, not just its appearance. The 6-piston unit uses 1.75/1.38/1.38-inch bore dimensions and is configured around a 1.25-inch-wide rotor. 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. SX6R-ST is a forged six-piston radial caliper equipped with Thermlock insulated pistons. Its wide mounting span and D1792 pad shape must be matched to the installed bracket and rotor. The caliper does not include a vehicle-specific mounting conversion.
Technical Details
- Manufacturer part number: 120-16040
- Component: SX6R Radial Mount; one individual caliper
- Placement: Left
- Construction and finish: Forged aluminum; Type III Anodize
- Pistons: 6; Thermlock insulated; bore dimensions 1.75/1.38/1.38 inches
- Hydraulic piston area: 5.40 square inches
- Dust boots: No
- Brake pad shape: D1792; shape number does not specify a friction compound
- Mounting interface: Radial; mounting centers 9.84 inches
- Mounting-hole diameter: 0.52 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Nominal rotor width: 1.25 inches
- Rotor width range: 1.10–1.28 inches
- Rotor diameter range: 12.88–15.00 inches
- Caliper weight reference: 11.6 lb
Fitment & Compatibility
Choose this component around the existing rotor and bracket, including the 1.25-inch nominal rotor width and 9.84-inch mounting span. Use the left-hand caliper and keep the bleed arrangement in the specified orientation. Compare pad support, caliper offset and piston volume with the brake being replaced. Wheel size alone cannot confirm spoke or barrel clearance.
Wilwood caliper specifications
Share the vehicle and the brake system actually installed with PMB Performance before ordering if the configuration is uncertain. We draw on over 20 years of parts and fitment experience when comparing the rotor, mount and caliper.
