high power less current bike motor (FH273/RH273)

Features:
1) DC 36V-48v-60-72v. front and rear
wheel motor are both available (100mm and 135mm for forks)
2) Waterproof high density sealant, sealant ring
3) High efficiency: 85%
4) High quality raw martial
5) Thick magnet, cold rolled silicon :16mm stator and magnet
6) 273mm dia. of hub 
7) High climbing ability: 40 degrees
8) Five-year guarantee
9) net weight: 5.2kg
10) Connect the wire with same color
11) 2m lever of front motor, handgrip, brake lever
12) rear motor is naturely central ,one side for disc brake and other side for 1-3gears freewheel

Custom requests are available. Please inquire with the information as follows:
1) Wheel size of your vehicle
2) Top speed you require for
3) Vehicle application

Outer packing:
Carton with polythene on each side, strengthened with double straps