COMET modular crankset 2X

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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
313-0273943050 AAACK MTB COMET Mod 36x24T 170mm M11/D10 V18
313-0273803050 CK MTB COMET Mod 36x22T 170mm M11/D10 V18
313-0273805050 CK MTB COMET Mod 36x22T 175mm M11/D10 V18
313-0273945050 CK MTB COMET Mod 36x24T 175mm M11/D10 V18
313-0273753050 CK MTB COMET Mod 36x26T 170mm M11/D10 V18
313-0273755050 CK MTB COMET Mod 36x26T 175mm M11/D10 V18
313-0273AU3050 CK MTB COMET Mod 38x24T 170mm M11/D10 V18
313-0273AU5050 CK MTB COMET Mod 38x24T 175mm M11/D10 V18
313-0273AI3050 CK MTB COMET Mod 38x28T 170mm M11/D10 V18
313-0273AI5050 CK MTB COMET Mod 38x28T 175mm M11/D10 V18


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