The wheel size of the trike can have a big effect on the gearing and the look of the trike. It has a smaller effect on the way the trike handles and the speed in different situations. The Adventure and Adventure HD models are available with a choice of 20” and 26” rear wheel sizes. The VTX, Sprint X, Sprint X Tour and Full Fat each have a model specific rear wheel in one size only. The VTX and Sprint X share the modern aero-profile tubeless ready 700c lightweight race wheels. The Sprint X Tour comes with a 26” rear wheel and the Full Fat has a fat 26” wheel.