Wilwood Rear UTV6 Conversion with Red Calipers & Drilled Rotors for Polaris RZR Pro XP (2020–2023)

Polaris RZR Pro XP (2020–2023) applications using the specified mounting arrangement can use this Wilwood UTV6 rear brake conversion. It combines red 6-piston calipers, pads and drilled 11.25-inch rotors, with the exact fitment qualifications set out below. Wilwood Engineering designs and manufactures disc-brake systems and components in Camarillo, California, where the company founded by Bill Wood in 1977 is based. Its range serves specialized applications, motorsport and street-performance vehicles, including calipers, brake rotors, master cylinders, valves, fittings and brake lines chosen to match a complete system.

Technical Details

• Manufacturer part number: 140-17280-DR; supplied as an axle kit.
• Hydraulic sizing: cataloged bore sizes 1.00, 1.00, 1.00 inches; piston area 2.37 square inches; inlet M10 x 1.25.
• Hardware and retained components: Mounting hardware supplied; existing wheel hubs retained; spindles, master cylinder and brake booster are not included.
• Wheel envelope: 15-inch minimum nominal wheel diameter; verify the entire wheel-clearance drawing, including spoke and barrel shape.
• Rotor specification: Material: Steel; Type: Drilled Steel Rotor; Style: Drilled; Surface Finish: Black Electro Coat.
• Hydraulic lines: Hydraulic flexlines and fittings are not included; select compatible lines for the complete installation.
• Service calipers: UTV6; 6 pistons per caliper; Red Powder Coat; lug mounting; stainless pistons.
• Supplied friction pads: BP-10 compound; match operating conditions to the intended use.
• Brake rotor size: 11.25-inch outside diameter × 0.25-inch thickness; solid construction.

Fitment & Compatibility

The table below covers RZR Pro XP and Pro XP 4 versions, including their individually listed Premium, Ultimate, Sport, Orange Madness LE and Rockford Fosgate editions. DS1553 documents the Pro XP rear hub interface and requires stock OE wheel studs; aftermarket studs may interfere. Verify the particular model and year, 15-inch wheel clearance and original hydraulic connection. Flexlines are not supplied.

For help matching the brake hardware, contact PMB Performance with your VIN, photographs and measurements. Our team has over 20 years of experience with parts and fitment details.

Review Installation instructions for the complete installation and clearance requirements.

Manufacturer Warning

Applicable to brake pads only. WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.