Electric Bike Conversion Kit System Front - Direct-Drive - 36v SLA (Sealed Lead Acid) Battery USA Hand-Built Wheels with Eyeletted Double-Walled Rims! Powerful 500-750w Hub Motor with Quick Disconnect! High-Qualit Easy Connect Water-Proof Connectors! Intelligent 3-Wire Controller with On/Off Toggle! BOTH Thumb & Split-Twist Throttle in Every Kit!