154 ads for chainrings, from private sellers and shops nationwide. Typical price: £19.
Bike chainrings
The chainring is the front toothed ring, mounted on the crank arms. You replace it when the teeth are worn or when you want a different ratio: a smaller ring helps on climbs, a bigger one gives you speed. On modern MTBs, narrow-wide chainrings, with alternating wide and narrow teeth, hold the chain without a guide.
To make sure it fits
- the mount: direct mount (different from brand to brand) or bolted to a specific BCD
- the offset, especially on Boost frames, so the chainline is correct
- the number of gears: the tooth profile differs between 11 and 12-speed
- the shape: round or oval, which evens out your effort
- wear: teeth sharpened like shark fins mean the ring needs replacing
SRAM and Shimano have the most chainrings on Biklo, along with FSA, Force, BBB and Fouriers. When you change the chainring, check the chain too, because a stretched one quickly wears out the new ring. Chainrings fit easily in a parcel locker.
