For Bicycle Bike Service Upgrade Kit For Ratchet E 54t, Cycling Repair Tools

First: Less trampling dead, easy to start climbing. Second: When you want to accte downhill or rush out of the team, it is much easier than 18t to exert force, and there is no need to gears in advance. The sound is much 18t. The front chain is 32t and the rear flywheel is 32t.