Chainrings
The number of teeth on a chainring, in combination with a choosen rear cog, determine how hard a given gear will be. In order to select the proper chainring, it is necessary to know how the chainring mounts to the crank. Some chainrings attach by 4 or 5 bolts to a cranks spider. The distance between the bolts is referred to as the Bolt Circle Diameter, or BCD. You must select a chainring which matches the BCD of a crank.
Other cranks use direct-mount chainrings. Instead of mounting to a spider, the chainring, as the name implies, mounts directly to the crankarm and is secured by a locknut.
Chainrings for 1x use generally come with specially profiled, taller "narrow-wide" teeth which help improve chain retention. Chainrings for 2x and 3x systems, on the other hand, are generally engineered with ramps and pins to allow the chain to shift more easily from chainring to chainring.
Wolf Tooth chainring DM for Shimano 12 sp. Boost 34 teeth
Standalone chainring, for Shimano 12-speed chains only, 34 teeth, for boost frames, weight 72 g.
Wolf Tooth Oval Boost chainring for Sram DM
Oval single chainring, profiled teeth, for 1x9/1x10/1x11/1x12 systems, for Sram cranks with 3 bolts.
Wolf Tooth Camo chainring 32 tooth
Single chainring for Camo spider, 32 teeth, for 1x10, 1x11, and 1x12-speed chains, weight 41 g.
Wolf Tooth Camo chainring 34 teeth
Single chainring for Camo spider, 34 teeth, for 1x10, 1x11, and 1x12 speed chains, weight 48 g.
Sram Eagle X-Sync 2 Chainring 32 Teeth 6 mm Offset Lunar
Chainring for 1x12 Sram Eagle systems, X-Sync 2 profiled teeth, a 6-mm offset, Lunar colour.
Shimano GRX FC-RX600-10/11 30 t 10/11 sp. chainring
Small chainring for 2x10 or 2x11 system, 30 teeth, combination with 46 teeth, BCD 80 mm.
Manobike Narrow Wide chainring Sram 3 mm boost black
Narrow Wide chainring, 30 to 36 teeth, for Sram mount, for 3 mm boost axle black.
Sram V1 Steel 64 BCD Chainring 24-tooth Black
Sram steel chainring with 64 BCD spacing, 24 teeth, matte black.
Shimano Deore FC-M5100 chainring 32 teeth
Chainring designed for 1x10 and 1x11 shifting systems, 32 profiled teeth, BCD 96 mm, black color.
Shimano Deore FC-M5100 30-tooth Chainring
Chainring for 1x10 and 1x11 shifting systems, 30 teeth.
Sram V2 Steel 104 BCD Chainring 36 Teeth Black
Sram 104 BCD steel chainring, 36 teeth, in a matte black finish.
Shimano Deore FC-M590 9-speed Chainring 22 Teeth
Smallest FC-M590 chainring for 3x9-speed systems, 22 teeth, mounting pitch – 64 mm, black.
MAX1 Narrow Wide chainring BCD110, 40T black
MAX1 single chainring for cranks with a 110 mm bolt circle diameter, compatible with 10-12 speed drivetrains.
Leonardi Factory Daisy Shimano GRX chainring
Chainring with profiled teeth, for Shimano cranks, for 1x10, 1x11, and 1x12 systems, BCD 110 mm, 40 teeth.
FSA Double 96x36t. MTB chainring 2x11
A mountain bike chainring for 11-speed drivetrains with a 4-bolt BCD 96 mounting pattern. Round aluminum design for a 2x11 drivetrain.
Leonardi Factory Gecko Track Shimano XTR 12 sp. oval chainring 32 teeth
Oval chainring for Shimano cranks, compatible with SLX M7100, XT M8100, and XTR M9100, 32 teeth, direct mount.
Shimano SLX FC-M670 Chainring 32 Teeth
Middle chainring for 3x10 systems, 32 teeth, type – AE, 104 mm BCD, weight – 62 g.
Shimano Deore FC-M590 Chainring 36 Teeth
FC-M590 middle chainring, 36 teeth for 48/36/26 chainring combination, 104 mm pitch, weight – 165 g.
Shimano Alivio FC-M430 Chainring 32 Teeth
Middle chainring for 3x9 systems, 32 teeth, BCD104 mm pitch, material – steel, Alivio series, weight – 121 g.
Shimano SLX FC-M660-10/FC-M670/FC-T671 Chainring 24 Teeth
Small chainring for 10-speed systems and 42-32-24 chainring systems, SLX series, AE type, material – steel, BCD 64 mm.
Shimano Dura-Ace FC-R9100 Chainring – Large
Large chainring for Shimano 2x11 systems, Dura-Ace series, 110 mm pitch, four arms, 50-52-53 and 54 teeth, weight from 103 g.
Shimano Dura-Ace FC-R9100 Chainring – Small
Small chainring for Shimano 2x11 systems, Dura-Ace series, 110 mm pitch, four arms, 34-36-39 and 42 teeth, weight from 26 g.
Sram X-Sync Eagle Boost 38-tooth Chainring 3 mm Offset Polar Grey
12-speed chainring with a 3-mm offset for the Boost, Direct Mount for Sram cranks, 38 teeth.
Shimano Tiagra FC-4700 chainring 34 teeth
Small chainring with 34 teeth, for Shimano Tiagra FC-4700 cranks, to be combined with a 50-tooth chainring, BCD 110 mm mount, black color.