Why Is My Bike Skipping Gears. Why does the chain keep slipping or skipping gears. Chain rearfront chain cassette or the derailleurs.
Chain skipping gears is the more common of the two situations. Problems with front derailleur shifting on an inexpensive bike. Press your shifter.
When it did not solve the problem my next assumption was stretched chain although a quick measurement appeared to be wi.
Rear derailleur shifting poorly skipping gears. Press your shifter. As you can see from the picture looking at the gears they are all in parallel. If not check cable housings chain and cogs for wear and see if the rear derailleur arm is bent.
