This question comes up often enough to try and answer it, but unfortunately there's no magic answer. In fact MTB chainrings chainrings don't have wear indicators, and the different tooth designs of different brands make it difficult to create a tool for monitoring wear.
Here are a few ways to judge the wear of your chainring
- The first is as simple as it is obvious: gears are unstable when the material is too worn. If you've just replaced your chain/cassette assembly and your front derailleur is in good condition, but the chainrings don't shift well: there's no doubt that the chainrings need replacing.
- The second requires a MTB chain chain. Place the chain on the chainring, pull on it, and at the highest point you must not be able to reveal more than half the chainring tooth.
- Finally, the manufacturers' recommendation: every 2 chains, replace the cassette. And, every 2 cassettes, replace the chainrings. This has not been proven for a mountain bike transmission transmission.
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MTB - Chainrings
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Chainring Mono SRAM X-SYNC2 EAGLE BOOST 12 Speed Direct Mount Offset 3mm Alu Forgé Black
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Chainring Mono RACE FACE NARROW WIDE 9/10/11/12 Speed 4 Holes 104mm Black
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Chainring Mono SRAM X-SYNC2 EAGLE BOOST 12 Speed Direct Mount Offset 3mm Steel Black
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Chainring Mono SHIMANO XT M8100 12 Speed Direct Mount
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Chainring Mono SHIMANO SLX M7100 12 Speed Direct Mount
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Chainring Exterior SHIMANO XT M785 10 Speed 4 Holes 104mm
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Chainring SHIMANO XT M8000 interior 11 Speed Double 4 Hole 64mm
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Chainring Mono BURGTEC THICK THIN 9/10/11/12 Speed Narrow Wide 4 Holes 104mm Black
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