Mountain Bike Rear Sprocket Slipping

If they aren t you should replace it.

Mountain bike rear sprocket slipping.

Look over the chain for excess wear or bent links. I guess that the spring isn t hold the sprocket well. If the chain is worn out replace it. Disconnect the rear brake and undo the axle nuts step 3 remove the cassette.

The best is to bring the bike to shop to repair it. If not check cable housings chain and cogs for wear and see if the rear derailleur arm is bent. Using a chain tool slip each of its ends through the links of your chain and check your chain against its wear indicators. Stop those bike gears slipping simple tightening of the gear cable with an anti clockwise turn of the barrel adjuster usually resolves most gear changing problems.

But if you want to repair it all alone first get your rear wheel off get the sprocket off and check the 3 teeth inside the sprocket they have to be perfect half circles. The freewheel mechanism is contained inside the splined housing. If a link is bent either replace the link or the entire chain.