• FSA K-Force Light MegaExo Double Chainset

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FSA K-Force Light MegaExo Double Chainset

The K-Force Light Double is our lightest MTB crankset, thanks to the hollow unidirectional carbon crank arms and twin-ring setup.

Having one fewer chainring (and doing without the mounts for an inner ring on the spider) cuts significant weight – at 560g the K-Force Light double is 60g lighter than the triple. Several chainring combinations are available, allowing for a range of purposes and wheel sizes. Racers on 26 or 27.5in wheels can opt for a 42/28 setup, recreational 29er riders might want the 36/22. All options have a narrow 46.5mm chainline and are designed to work with 10-speed setups.


  • Hollow carbon fiber arms with UD weave
  • Compatible 10 speed systems MTB
  • Compatible with 10 speed MTB systems


  • Hollow carbon fibre arms with UD weave
  • AL7075 100% CNC machined chainrings
  • AL7075 stamped inner chainring
  • AL7075 Torx T-30 alloy chainring bolts
  • External bottom bracket bearing and crank system: Mega Exo
  • BCD: 104/64mm
  • Crank Weight: 560g

To help you choose which crankset to buy, here is a FSA Crankset/Bottom Bracket Compatibility Chart.

Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery costFREE
  • Delivery toUSA
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

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Buying Guide

  • We've got everything you need to know in our buying guide.