Roadrunner

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RoadRunner motors are brushless. That means the electric energy transferred to the motor is transformed to movement energy in more efficient way (less energy is lost for heat). In simple language, you get more range per charge.

Available in 16" 20" 24" 26" wheels. Rear (7 or 8 speeds) wheels are available as well but it's more expensive and more headache to mount. Comes in 48V or 36V.
Range with No Pedaling, No wind, 10Amph Batteries, running as hard and as fast as you can will be 10-14 miles. Improve one of the above components (Pedal on accelerations, 12 Amph Batteries, ride on speeds less than 20Mph...) and you'll easily go over 20 Miles.
Those numbers are based on a real life experiments and are very honest numbers, We wish we could simply write 20 miles range like the competitor products, but we prefer to be honest than make more sales.

Like the Sparrow, The Road runner kit includes similar components.