Join Date: Jul 2007
Location: San Francisco, CA, USA
Bikes: Dahon 2007 Cadenza, 2006 Speed Pro, 2005 Helios SL, 2004 Roo El, Minimoto Electric Bike, USPD Currie Electro Drive Electric Bike, Schwinn Scooter
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26" bike kit will not fit a 20" bike frame due to smaller diameter fitting. Your link is not clickable. The advantage for 20" wheel is you get more torque since the wheel spins faster. Your speed will reduce due to low gearing ratio. It's kind of like running your car on first gear only.