Fitment: (2018) Polaris RZR XP Turbo S / XP-4 Turbo S, (2016-2018) RZR XP Turbo / XP-4 Turbo, (2018) RS1, (2018) Ranger XP 1000. Replaces OEM Belts: 3211202 and 3211186. Our World's Best (WB) belt is for the rider / racer that is looking for the ultimate in belt technology and proven performance. This belt acts like the OEM belt in terms of engagement and operating RPM's. Working directly with GBoost Technology, the authority in advanced CVT belt design and manufacturing, we have extensively tested and validated each belt in the most grueling race environments with our Sponsored Race Program and our own Big HP vehicles to ensure the strength and durability of each application.