K-FORCE BB392EVO crankset 1X

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FSA BB392 Crankset for MTB

A Look Inside FSA's Megatooth Technology

Our innovative Megatooth chainring has been developed to respond to the increasing demand 1/11 cranksets, designed to meet the needs of top level riders. The design allows the chainring to retain the chainring completely by itself. Find out more on our Megatooth technology in this video.

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.


Our single-ring K-Force Light Evo is the epitome of minimalist efficiency, and it’s optimised for the 11-speed systems that make single front-rings so successful. With unidirectional carbon arms and a slimline, purpose-designed spider, this very stiff crank weighs just 425g. The redesigned carbon fiber arms are hollow for maximum strength and minimum weight, while alloy inserts hold pedals firm. Even the Torx-headed chainring bolts are lightweight aluminum, while our ABS system – Asymmetric Bolt Spacing – puts extra strength behind the crank arm, right where it’s needed. The chainring is CNC machined from aircraft-grade 7075 aluminum



  • Hollow carbon fiber arms with UD finish
  • Forged AL7050 BB392EVO spindle
  • Ø30mm forged AL7050 spindle
  • AL7075 100% CNC chainrings
  • AL7075 Torx T-30 alloy chainring bolts
  • Fits Shimano and SRAM 10-11 speed system
  • Thick-Thin tooth design for maximum chain engagement


Code Type
312-0098433032 K-FORCE CK BB392 32T 170
312-0098435032 K-FORCE CK BB392 32T 175


Type Cranksets
Technology ABS, BB392EVO, Hollow Carbon, Megatooth
Discipline MTB
Series K-FORCE
Weight 425
Bolt Circle Diameter 96
Compatibility BB392
Crankset Type Single
Drivetrain Compatibility Shimano10/11S, Sram10/11S
Holes Number 4
Material Carbon