Compatible with single speed and multi-speed flywheel, calliper brake, disc brake and clincher 26 inch tires only.
Suggestion:For Double Security,MUST Recheck and Readjust the Spoke Tension with tools REGULARLY or MUST go to bike shop if ride for Gas motorized bicycle.
Rear rim with 6 holes to install disc brake rotor.
135mm rear width, axle length 175mm;
Rear side with threads to install rotary flywheel.