RFN Warrior SX-E400 Electric Bike - Pink Yellow revvi-bundle Genuine Revvi adjustable rear shock

Genuine Revvi adjustable rear shock upgrade for Revvi 18" and 20" electric bikes

You want progression without jumping straight to the A20 Pro

Seat height: 48cm

The Amped A20 Pro arrives semi-assembled

If your rider has outgrown the 16eDRIVE and is ready for more proper off-road capability

RFN Warrior SX-E400 Electric Bike - Pink Yellow revvi-bundle Genuine Revvi adjustable rear shockRFN Warrior SX E400 Quick Overview Best for: young riders aged around 36 years old. Recommended rider height: approximately 90110cm. Motor: 36V 250W brushless motor, 400W peak. Seat height: 46cm. Speed settings: 5mph 8mph 15. 5mph. Our view: a proper first electric MX style bike for young riders who want motorbike looks with controlled, confidence building power. Shop SX E400 Bikes SX E400 vs SX E500 Kids Range Explained The RFN Warrior SX E400 is a