E-BikeKit - Hub motor kits with LiFePo battery pack
BatterySpace.com - DIY kits, NiMH & lithium packs for electric bikes.
Kings Motorbikes - Offers 2 and 4 stroke motorized bicycle engine kits and parts.
Rhoades Car - Electric 4-wheelers include the Go Boy for industrial use.
Bicycle Engines - Sells motorized bicycle engine kits including Stage III and Grubee 4G.
21 Wheels - Features a variety of IZIP bikes, conversion kits, and accessories.
Green Living Ideas - Loads of info on how to become more eco-friendly.
Zoombicycles - Electric bikes and scooters and gas engine kits.
Bike Broke - Courtesy of BikeHugger.com
One wheel per person in Portland
Power Dirt E-Bike Lithium Pack, Hub Motor