COMET modular crankset


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FSA MTB Chainrings - Which One is Right For You?

Full Speed Ahead offer mountain bikers a range of chainring options, ensuring that we meet the needs of the rider, whatever the requirement. Here one of our engineers discusses everything you need to know about our chainrings including gearing and drivetrain compatibility.


As the range of rear cassettes gets ever-larger, the need for a big range at the front diminishes and double chainring setups for MTB are increasingly popular. Comet brings a stiff, modular double crankset with a 24mm alloy spindle in at a high-value price. Solid forged 6061 aluminium arms put the power down and they’re channeled at the back to trim some weight. A new No Pinch Bolt design on the left-hand crankarm makes fitting easier and looks cleaner. Modular configuration allows the compatibility with boost 148 frames.


  • Convertible spider design for different chainring and chainline configurations
  • Solid forged AL6061 crankams
  • Forged AL6061 spider
  • 24mm chromoly spindle
  • AL7075 stamped outer chainring and stamped steel inner chainring
  • Chromoly chainring bolts
  • Optimized new 11 speed system


Code Type
313-0273803050 COMET CK Modular 36x22 170mm w/o BB
313-0273805050 COMET CK Modular 36x22 175mm w/o BB
313-0273943050 COMET CK Modular 36x24 170mm w/o BB
313-0273945050 COMET CK Modular 36x24 175mm w/o BB
313-0273753050 COMET CK Modular 36x26 170mm w/o BB
313-0273755050 COMET CK Modular 36x26 175mm w/o BB
313-0273AU3050 COMET CK Modular 38x24 170mm w/o BB
313-0273AU5050 COMET CK Modular 38x24 175mm w/o BB
313-0273AI3050 COMET CK Modular 38x28 170mm w/o BB
313-0273AI5050 COMET CK Modular 38x28 175mm w/o BB


Type Cranksets
Technology MegaExo, Modular
Discipline MTB
Series COMET
Color Neutral
Weight (gr) 856
Compatibility Mega Exo 24mm
Bolt Circle Diameter (BCD) 96
Crankset Type Double
Drivetrain Compatibility Shimano10/11S, Sram10/11S
Holes Number 4
Material Alloy