Features: Available in billet or cast aluminum housings Dual idler configuration provides maximum strength Cool, quiet, precision ground gears machined from 9310 alloy steel billet Increases width by 4″ on each side (8″ total) 1.5″ diameter Hardened 4340 steel drive shaft Housings use advanced gaskets or O-rings that won’t leak Universal hub fits all major bolt-on patterns Gear reduction reduces stress on the drivetrain Dual idler configuration adds 1″ of offset Lighter than the competition Fits: Polaris RZR XP 1000: 2014+ Polaris RZR XP 4 1000: 2014+ 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 a 14″ or larger wheel. 14″ and 15″ wheels cannot have more than 4-1/2″ of clearance. 16″ and larger wheels cannot have more than 5″ of clearance. When using factory 14″ wheels, 2″ spacers must be used. Not compatible with double beadlock wheels. Wheels must have a minimum 3.25″ (82.55mm) center bore or require 1″ spacers.