RFN Warrior SX-E500 Electric Bike - Orange Blue a20pro Choose the Amped A20 Pro

Choose the Amped A20 Pro if your rider is around 125–150cm tall and ready for more speed

but it is still a proper 110cc pit bike

The Revvi 18 is typically best suited to riders around 8–12 years old depending on height

If the rider has outgrown the FXJ-style bikes and wants more punch

RFN Warrior SX-E500 Electric Bike - Orange Blue a20pro Choose the Amped A20 ProRFN Warrior SX E500 Quick Overview Best for: progressing young riders aged around 48 years old. Recommended rider height: approximately 100120cm. Motor: 36V 350W brushless motor, 500W peak. Speed settings: 9. 5mph 13. 5mph 18. 5mph. Best upgrade from: RFN Warrior SX E400. Our view: a true mini motocross style electric bike for progressing young riders who need more power, stronger brakes and proper off road capability. View SX E500 SX E400 vs SX E500