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.
Sram Eagle X-sync Direct Mount 3 Offset Boost 12-speed Chainring 32 Teeth Gold
12-speed Direct Mount chainring with a 3-mm offset for Sram cranks and Boost frames, 32 teeth, gold logo.
FSA Double 64x26T MTB chainring 2x11
High-quality aluminum MTB chainring made from AL7075-T6 material.
Absolute Black OVAL30 Shimano BCD104 chainring, 30T oval
High-quality oval chainring for cranks with a four-bolt mounting, 104mm BCD
Shimano STePS SM-CRE80 Chainring 38 Teeth
STePS SM-CRE80 38-tooth chainring for STePS electric motors on 4-arm spiders.
FSA MTB Comet chainring 104x44 (3x10)
Steel chainring for FSA Comet Modular cranks, 44 teeth.
Sram Eagle GX CR X-sync Direct Mount Boost 3 Offset 12-speed Chainring 32 Teeth
Cold-forged aluminium X-SYNC 2 32T Direct Mount 3 mm Offset Boost chainring for Eagle sets.
Shimano FC-M8000-3 Chainring 22 Teeth
Chainring with 22 teeth, four-bolt mounting with a 6-mm pitch for M8000/M7000/M6000 cranksets.
Shimano FC-M780 (AE) Chainring 24 Teeth
Aluminium alloy chainring with 24 teeth for Shimano 3x10-speed systems, mounting pitch – 64 mm, AE type for 42/32/24 tooth combinations.
FSA Pro Road 130x39t chainring black
High-end CNC machined chainring, 130 mm BCD, 39 teeth, material AL 7075-T6, for 10 and 11-speed systems.
Shimano XTR M9000/M9020 Chainring 26 Teeth
XTR chainring with 26 teeth for FC-M9000-2/FC-M9020-2 cranks, designed for 2x11-speed systems.
Sram Road X-Glide 46 t. chainring 110 mm
Sram Road X-Glide 46T 110 mm chainring is a road chainring for cranksets with a 110 mm bolt circle diameter; 46 teeth for smooth engagement.
Shimano XT FC-T780/781 Chainring 36 Teeth
Shimano XT chainring for 10-speed systems, 36 teeth, BCD 104 mm, AL type (for 48/36/26 combinations).
Force 11K chainring 36 teeth
MTB chainring for Force Eleven 1.7+ cranks, recommended for 11-speed, 104 mm BCD, 36 teeth.
Sram Eagle X-sync 2 Oval Direct Mount 6 Offset 12-speed Chainring 38 Teeth
Sram Eagle X-Sync 2 oval chainring with a 6-mm offset for 12-speed direct mount groupsets.
Sram Eagle GX CR X-sync Direct Mount 3 Offset Boost 12-speed Chainring 34 Teeth
Sram Eagle chainring with a 3-mm offset for 12-speed Direct Mount groupsets.
Shimano XT M8000 SM-CRM81 XT Chainring 1x11-speed 32 Teeth
Chainring for Shimano XT M8000-1 cranksets, designed as a separate single chainring for 11-speed cassettes, Dyna-Sys II technology.
Sram Eagle GX CR X-sync Direct Mount 6 Offset 12-speed Chainring 32 Teeth
Sram Eagle chainring with a 6-mm offset for 12-speed Direct Mount groupsets.
Sram Red 22 chainring 34t. 11sp. S2 BCD110
Sram Red 22 chainring 34t. 11sp. S2 BCD110 is a road chainring for an 11-speed drivetrain, with 34-tooth gearing and a 110 mm bolt circle diameter.
Force 10K converter 38 teeth
MTB chainring for Force Ten 2.3+ cranks, recommended for 10-speed, 104 mm BCD, 38 teeth.
FSA Double 96x36t. MTB chainring 2x10
FSA CNC machined Afterburner ABS chainring made from AL7075-T6 aluminum, 36 teeth, BCD 96mm ABS, 10/11 speed.
FSA MTB Comet Modular chainring BCD68
Steel chainring for FSA Comet Modular cranks, 24 or 26 teeth, BCD 68 mm mounting pattern.
Shimano Alivio FC-M4000/4050 40 teeth chainring
Chainring for FC-M4000/4050 3x9-speed cranksets.