Keenso Fastest Throttle, 1 Pair 3 Wires Universal Electric Twist Throttle Handle for 22.5mm Handlebar

Works smooth and bolts on nicely to 7/8" (22.2mm) bars. You'll need to splice the 3 wires, but it's easy if you have the tools. Red to red, white to white and black to black. I didn't use the supplied grips, so I have no opinion. But the throttle is well built, smooth and god quality for the price.

What's to say? My bike was broken, and now it works as new.

Throttle does not work.