I found this on Axia Alloys web site and thought it might be some good info.
OEM Roll Cage Tubing Diameters:
Yamaha Rhino Perimeter 1.75”
Yamaha Rhino Top Crossbars 1.5”
Kawasaki Teryx Perimeter 1.875”
Kawasaki Teryx Top Crossbars 1.7”
Kawasaki Teryx 4 Perimeter 1.875”
Kawasaki Teryx 4 Top Crossbars 1.7”
Polaris Ranger and RZR and RZR S and XP Perimeter 1.75”
Polaris Ranger and RZR and RZR S and XP Top Crossbars 1.75”
Polaris Ranger and RZR and RZR S and XP Rear Harness Bar and Rear Bumper crossbars 1.5”
Polaris Ranger and RZR 4and XP 4 Perimeter 1.75”
Polaris Ranger and RZR 4 and XP 4 Top Crossbars 1.75", 1.5" AND 1.25"
Polaris Ranger and RZR 4 and XP4 Rear Harness Bar and Bumper crossbars 1.5”
*Rhino and RZR use a 1.5” clamp to mount to the steering column
Can Am Commander cage 2"
Honda Big Red 1.625"
Redline Revolt 1.25"
Redline Riot 1.50"
Arctic Cat Wildcat 1.75"