Heavy Hitter 520 Primary Chain Drive Conversion OEM Motor Only aftermarket 19/16-17/17 is 1 inch shorter

19/16-17/17 is 1 inch shorter than oem

Unique Pattern: The dense bump pattern design of the tires provides more traction and tremendous grip when climbing and turning

Whether you're a seasoned off-road enthusiast or a city rider

(4)Configurable motor temperature protection range

Riser sold separately

Heavy Hitter 520 Primary Chain Drive Conversion OEM Motor Only aftermarket 19/16-17/17 is 1 inch shorterImportant Notice: When installing, make sure your chain tension is not tight! Any chain drive that you install should have loose chain tension! For OEM Motor ONLY! Most aftermarket motors have a +4mm offset change. We are in process of an update to work with aftermarket motors. Big Performance for big power builds and long term reliability. The heavy hitter Ultra Bee primary chain conversion is designed with perfection in mind. Most primary chain