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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.
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Shimano Alivio FC-M4000/4050 Chainring 30 Teeth
Chainring for FC-M4000/4050 3x9-speed cranksets.
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Shimano Alivio FC-M4000/4050 Chainring 22 Teeth
Chainring for FC-M4000/4050 3x9-speed cranksets.
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Force 9K converter Fe 44 teeth
MTB chainring for Force Nine 3+ cranks, recommended for a 9-speed, can be used on a 6-9 speed, 104 mm BCD, 44 teeth.
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Force 9K converter Cr-Mo 22 teeth
MTB chainring for Force Nine 3+ cranks, recommended for 9-speed, can be used on 6-9 speed, bolt circle diameter 64 mm, 22 teeth.
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Force 10K converter Cr-Mo 32 teeth
MTB chainring for Force Ten 3+ cranks, recommended for 10-speed, can be used on 6-10 speed, 104 mm BCD, 32 teeth.
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Force 10K converter 44 teeth
MTB chainring for Force Ten 3+ cranks, recommended for a 10-speed, compatible with 6-10 speed, 104 mm BCD, 44 teeth.
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Force 11K converter 32 teeth
MTB chainring for Force Eleven 1.7+ cranks, recommended for 11-speed, 104 mm BCD, 32 teeth.
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Sram Eagle X-sync Direct Mount 6 Offset 12-speed Chainring Gold 36 Teeth
Sram Eagle chainring with a 6-mm offset for 12-speed Direct Mount groupsets.
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Race Face Single Direct Mount N/W chainring black 28 teeth
Aluminum chainring with Narrow Wide tooth profiling, compatible with 9-12 speed systems, suitable for XC/Trail/AM/DH.
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Race Face Single Direct Mount N/W chainring black
Aluminum chainring with Narrow Wide tooth profiling, suitable for 9-12 speed systems, ideal for XC/Trail/AM/DH.
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Sram Eagle X-sync 2 Oval Direct Mount 6 Offset 12-speed Chainring 36 Teeth
Sram Eagle X-Sync 2 oval chainring with a 6-mm offset for 12-speed direct mount groupsets.
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Sram V3 110BCD Road Chainring 36 Teeth
Sram 110 BCD road chainring with 36 teeth in black.
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Sram Eagle X-sync Direct Mount 3 Offset Boost 12-speed Chainring 32 Teeth
12-speed Direct Mount chainring with a 3-mm offset for Sram cranks and Boost frames.
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Shimano XT M8000 SM-CRM81 XT Chainring 1x11-speed 34 Teeth
Chainring for Shimano XT M8000-1 cranksets, designed as a separate single chainring for 11-speed cassettes, Dyna-Sys II technology.
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Shimano Deore FC-M617 chainring 36 teeth (AY)
Shimano Deore FC-M617 crankset for a 2x10 gear system, 36 teeth, AY variant for combination with a 22-tooth chainring, BCD104 mm bolt circle diameter.
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Sram Eagle X-sync Direct Mount 6 Offset 12-speed Chainring 38 Teeth
Sram Eagle chainring with a 6-mm offset for 12-speed Direct Mount groupsets.
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Sram Eagle X-Sync2 12-speed Chainring 104BCD 38 Teeth
Sram original X-Sync 2 chainring for Eagle 12-speed cranksets with 104 BCD pitch.
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Sram Eagle X-sync Direct Mount 6 Offset 12-speed Chainring 32 Teeth Gold
Sram Eagle chainring with a 6-mm offset for 12-speed Direct Mount groupsets.
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Truvativ XX chainring 26t. 80mm
The Truvativ XX 26-tooth chainring is a mountain bike component with an 80 mm bolt circle diameter and supports precise chain engagement.
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Absolute Black Sram OVAL offset 6mm chainring 28T.
Oval chainring for cranks with a three-bolt spline mount - designed for single-speed drivetrains.
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Absolute Black OVAL Road 2x 110/4 chainring 50 teeth red
Oval road chainring made from a single piece using CNC milling, with a 110mm bolt circle diameter for a double chainring with 50 teeth.
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Absolute Black OVAL Road 2X 110/5 BCD chainring 52 teeth
Oval asymmetric chainring for road cranks with a four-arm mount at a 110 BCD spacing.
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Absolute Black Cyclocross chainring BCD130 38t.
Cyclocross chainring designed for single-speed 1x10/11 cranksets.
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Absolute Black OVAL30 Shimano BCD 104 chainring, 30T oval
Oval chainring for cranks with a four-bolt mount, 104 mm BCD.
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