Revvi 250w Brushless Upgrade Kit To Fit 12" and 16" Electric Balance Bikes
£109
For the Revvi cup events the 170w upgrade kit is allowed! 250w Brushless Upgrade Kit - To fit Revvi 12" and 16" electric balance bikes. 250w brushless motor. If your bike is already 250W then this will not improve the performance of your bike.
