Chain - To fit Revvi 12" electric balance bikes

Chain - To fit Revvi 12" electric balance bikes

Two size options depending on your bikes gearing: 

11T front sprocket - 55T rear sprocket - This is the gearing for a standard 12" Bike. 

13T front sprocket - 47T rear sprocket - This size can be used if you want to fit a 250w brushless upgrade kit to a 12" bike.