I have a stock Razor E300 and i am planning to upgrade it with my son.
The main idea is to upgrade it step by step with high quality parts.
First of all i would like to change the original one speed throttle with a variable speed throttle.
Except throttle and controler do i have to buy something else?
Having in mind that the batteries and motor would be also upgraded, could you suggest me a good controler?
Thanks in advance!