Wilwood Rear Brake Kit for Polaris RZR Turbo S/Turbo S4 (2018–2022) with Anodized UTV6 Race Calipers and 11.25-Inch Plain Rotors

The Turbo S rear race assembly uses six-piston UTV6 calipers with 1.00-inch bores, 11.25-inch solid steel rotors and dynamic adapters. It converts the specified rear service-brake arrangement while retaining the wheel hubs. Anodized calipers and 11.25-inch plain face rotors are the selected configuration. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, chosen to match the complete system.

Technical Details

• Manufacturer identification: 140-17043, supplied as one application-specific kit.
• Rotor dimensions (diameter/width): 11.25 / 0.25 inches. Plain Face design in Steel.
• Pads supplied: BP-28. Piston bore dimensions: 1.00, 1.00, 1.00 inches.
• The specified caliper hydraulic connection is M10 x 1.25.
• No flexline kit is packed with these brakes. Confirm the documented original-hose installation or separately purchased replacement.
• Service caliper specification: UTV6 in Type III anodize, using lug mounting and 6 stainless pistons.
• Verify the existing hub dimensions: replacement wheel hubs are outside the scope of this package.
• A 15-inch nominal wheel is the starting point. Its spoke and barrel shape must clear the actual brake assembly.
• Mounting hardware and brake pads come with the kit. Spindles, a master cylinder and a brake booster are not included.

Fitment & Compatibility

The table is limited to the named RZR XP Turbo S, XP 4 Turbo S, Turbo S and Turbo S4 versions, including Velocity and Lifted Lime LE entries. Verify their individual years within 2018–2022. Do not infer PRO XP or standard XP 1000 rear fitment from another RZR kit; check the rear bracket and factory hose connection. Use the complete application table below to check the individual year, model, submodel, original brake configuration and attached notes.

PMB Performance brings 20+ years of parts and fitment experience to brake selection. Send the actual hub or spindle details, existing brake configuration and wheel measurements for help checking this combination.

Manufacturer documentation: Installation instructions.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information:

P65Warnings.ca.gov.