At $109 /£89, the AS2 Pro is rather expensive—not just compared to hand pumps and CO2 inflators but also when measured ...

E-bikes combine a bicycle with a big lithium battery, a speed controller, and a motor. What you get from that combination is simple, efficient transportation. [Tom Stanton] wanted to build an e-bik… ...

Since the group consists of both full- and mid-power electric mountain bikes, I won’t compare one drive unit to another, as it would be an apples-to-oranges comparison. That said, I share my thoughts ...

In the kit, the IC motor of Yamaha dirt bikes is swapped out with the XE4 engine. It comes with a 12-volt pump for pumping coolant to keep the electric motor cool using the stock YZF radiator, and ...

Using the stock YZF radiator, the kit includes a 12-volt pump to circulate coolant to keep the electric motor cool. The test bike used a 2016 YZ250F chassis and the XE4 conversion kit.