Wilwood Left Black XRS6R Brake Caliper, Six Stainless Pistons / 3.46-Square-Inch Area

The left-hand form of this black Wilwood XRS6R positions its differential pistons for the corresponding side of the brake arrangement. A forged aluminum body, internal fluid passages and nominal 1.10-inch rotor width accompany its 3.46-square-inch effective piston area. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems for motorsport, street-performance and specialized use, including calipers, brake rotors, master cylinders, valves, fittings and brake lines.

Technical Details

• Manufacturer part number: 120-17208-BK. Type: Forged XRS6R Radial Mount caliper.
• 5.98-inch-center radial attachment, left hand orientation. 0.39-inch holes; 1.45-inch mounting height.
• Nominal rotor width 1.10 inch; compatible width range 1.00–1.10 inch. Rotor diameter specification: 11.75–14.00 inches.
• Compatible pad profile 10416; confirm thickness and compound for the installation.
• 6-piston hydraulic layout with 1.38/1.12/1.12-inch bores and 3.46 sq in of effective area; piston type: stainless steel.
• Hydraulic inlet thread: 1/8-27 NPT. Match the fitting thread and sealing arrangement to the brake hose.
• Black Powder Coat finish on a forged aluminum body.
• Caliper component weight: approximately 5.2 lb.
• Component: one individual hydraulic brake caliper. Select the mating rotor, pads, mounting hardware and line connection to suit the complete brake assembly.
• Piston dust boots: no.

Fitment & Compatibility

Check left-hand identification against the actual spindle-side location and direction of rotor travel. The radial mounting dimensions and master-cylinder sizing must be confirmed even when replacing another six-piston caliper.

For help matching this caliper, contact PMB Performance with the brake-package details and rotor measurements. Our team has more than 20 years of experience with brake parts and fitment.