Polaris RZR XP Turbo S X300 Heavy Duty AxleRhino X300 Axles Change the Game SuperATVs Rhino X300 Axles for the Polaris RZR XP Turbo S change the game. With a 300M shaft that flexes to absorb force instead of breaking, you get CVs that dont break, a drivetrain that wont buckle, and the ability to go on wilder rides. Were so confident in X300 that we back it with an industry leading 3 year warranty. Its All About the Flex X300 is about more than just being strong, its about flex. When X300 Axles