The XE4 by Xtreme Electric MX (XEMX) is a bolt-on kit that converts Yamaha 250 and 450 YZF/YZFX bikes to high-powered electrics. XEMX makes two separate conversion kits (the air-cooled XE2 and ...
The best electric bike conversion kits will enable you to add a motor to your existing bike simply and relatively cheaply – at least compared to the price of buying a new electric bike. There are an ...