Mountain Bike Chain Jumping Gears

This is most commonly caused by poorly set up derailleur limits and these.

Mountain bike chain jumping gears. I show the most common causes for chains that skip slip jump gears while pedaling auto shifting phantom shifting derailleur especially while under torque like climbing up a hill or standing. One of the most important things to maintain on a mountain bike or any bike is the drivetrain. Gears are well indexed but the chain keeps dropping off of either end of the cassette or chainrings solution. We and your local bike shop highly recommend replacing a worn cassette for best performance.

If your chain is stretched you will need to install a new chain. Does your chain skip between gears when you pedal phantom shift shift twice instead of once or refuse to shift when you need it to. A new chain and worn out cassette won t mesh well and may cause a new chain to wear out quickly. Abby hippley mechanic bike builder and former demo driver.

Bike chain skipping jumping after replacing multiple parts. This includes the shifters chain front and rear derailleur the cassette and crankset. If it was working just fine before you may have a worn out cassette on your bike. In the first few rides on a new bicycle the cables stretch the most.

If you replace your chain and cassette and the chain still skips your crankset or chainrings will most likely need to be. Often a skipping bike chain is due to a cable stretch. They can also stretch over time as you ride.