Today we're upgrading a Razor MX 350 by converting it to Lithium, installing an improved controller, variable throttle, plus a few cosmetics.
Parts
Motor Controller Kit
(no longer available) Try searching for "24v LiFePO4"
Battery (similar to)
(no longer available) Try searching for "24v LiFePO4"
Lights and Horn Kit
https://www.ebay.com/itm/222627137235