Features: Available in solid or cast aluminum housings Dual idler configuration provides maximum strength Cool, quiet, precision ground gears made from 9310 alloy steel Adds 4″ of width on each side (8″ total) 1.5″ diameter Hardened 4340 steel drive shaft Housings use advanced seals that won’t leak Universal hub fits all major bolt-on patterns Gear reduction reduces stress on drivetrain Dual idler configuration adds 1.5″ of offset Lighter than the competition Fits: 2014-2023 Polaris RZR XP 1000 2014-2023 Polaris RZR XP 4 1000 NOTE: Verify the bolt size of the hardware that attaches the Radius Arms to the spacer plate (see image below). Select the socket size that matches your OEM size. Polaris made a change mid-2017 that caused some confusion with installation. Wheel Requirements: Requires 18-inch or larger wheels. For 18-inch wheels, the gap cannot exceed 4-1/2 inches. For 20-inch or larger wheels, the gap cannot exceed 5 inches. Wheels must have a minimum 3.25-inch (82.55 mm) center bore or require a 1-inch spacer.