20″ Plus Swing Arm -To fit Revvi 20″ Plus bikes SX-E500 removable without tools and expandable

removable without tools and expandable up to 72V 45Ah for future upgrade potential

72V 35Ah Samsung lithium hot-swappable battery

this is the one I’d look at

This is not just a faster balance bike

This complete kit is designed to replace the standard cable brake system with a high-performance Nutt hydraulic brake setup

20″ Plus Swing Arm -To fit Revvi 20″ Plus bikes SX-E500 removable without tools and expandableRevvi 20 Plus Swing Arm Genuine replacement swing arm designed to fit the Revvi 20 Plus electric bike. If your original swing arm has become bent, damaged or worn, this genuine Revvi replacement restores the rear suspension assembly and ensures the correct alignment of the rear wheel and shock absorber. Features Genuine Revvi replacement part Designed specifically for the Revvi 20 Plus Direct replacement swing arm Maintains correct rear suspension