The development process saw a number of prototypes constructed. Each mule evolved through tiny but perceptible changes to the frame and set-up to give the 20-inch bike a different set of ...

Interestingly, with the same 20-inch diameter wheels as most folding e-bikes, we found the steering of the RadExpand to feel less nervous due in part to the wider BMX-style handlebar. The 750 W ...

Vivi Electric Bike 20″ x 3.0 Folding Electric Cruiser Bike - $540 (was $1,059) The Vivi MT20 20-inch folding electric bike is ...

I’ve found few folding bikes to be a breeze to fold/unfold and ... and those wheels are 20-inch rims with 2-inch Schwalbe Billy Bonkers Performance rubber. They might be small, but they ...