9T-70T Sprocket kit

Revvi 16" bikes where originally fitted with an 11t front sprocket and 57T rear sprocket. This kit changes this to a 9T front sprocket and 70T rear sprocket.  This will give your bike more acceleration low down but less top speed. 


The kit includes: 

-9T front sprocket with washer and Nut

-70T Rear sprocket


-Chain guard 



9T-70T Sprocket kit - To fit Revvi 16" electric balance bikes