r12 electric bike

Description

R Martin electric bicycle with powerful crank motor. The model R12 electric bike uses the Shimano Nexus 3-speed hub. Our crank motors have an advantage over other hub motor electric bikes. The crank motor works along with the gears allowing extra power for hills and also using very little power from the 36v lithium battery pack on flat ground. The R12 will cruise at 20+ mph. ... "electric bikes" "electric bike" "electric bicycles" "electric bicycle" R12 "R Martin" ...