A:Answer Hey @Bing, the wheel will propel you up to 20mph up to a max weight of 265lbs. Also, we have two sizes of Electron Wheel which will work on 700c or 26" size frames. The 700c wheel ships with a 700x32c tire, and the 26" ships with a 26" x 1.25" tire. Electron Wheel's tires are interchangeable, so you can replace with a tire that matches your rear tread. More info on tire sizing can be found at: https://support.electronwheel.com/hc/en-us/articles/115001403394-What-are-the-electron-wheel-tire-rim-dimensions-.
Lastly, no extra hardware needed to mount the Electron Wheel. The wheel contains the motor, battery, and smart sensors all inside. The only accessory to mount on the bike is a wireless pedal sensor which attaches with velcro on your pedal crank.
Please let us know if any other questions we can answer. Thanks!