Originally Posted by
Caferacernoc
7-speeds that are lighter than the old six speed freewheel with new gears and no more chain skip. And quick to install, no freewheel tools or chainwhips needed since it's all brand new. Just screw on the freewheel, install tires, done. Awesome.
If the chain was slipping before there is a good chance it is worn and should also be replaced. If you run a worn out chain on a new freewheel, you will accelerate the wear on the freewheel. Best to start with a fresh chain or one you know is OK when installing a new freewheel.