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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.


Crank arms, spider and chainrings – the Afterburner has been completely redesigned for higher performance than ever. Those svelte new arms are hollow-forged from tough aluminum and clamp to a 30mm alloy spindle for the ultimate rough-trail strength. Chainring bolts are also chromoly, while clever design of the non-driveside arm eliminates the weak point of a pinchbolt. The outer chainring is CNC-machined from hard-wearing 7075 aluminum, while the middle and inner are stamped from the same lightweight material. Overall weight is just 803g. The 11-speed Afterburner is available as a double in seven gearing options to cover every wheelsize and use. The sandblasted matte finish combines with polished highlights and sections of beautiful aluminium to exude a monolithic energy that belies its low weight. Subtle logos only enhance the look. Laser etching means the graphics last, too, whatever the weather throws at them.


  • Convertible spider design for different chainring and chainline configurations
  • Hollow forged AL6061 crank arms
  • Forged then CNC machined AL6061 spider
  • 30mm alloy spindle
  • AL 7075 CNC chainring
  • Chromoly chainring bolts
  • Optimized 11 speed system


Code Type
313-0298753090 CK MTB AFTERBURNER Mod 36x26T 170mm M11 V18
313-0298755090 CK MTB AFTERBURNER Mod 36x26T 175mm M11 V18


Type Cranksets
Technology Hollow Forged, MegaExo, Modular
Discipline MTB
Color Neutral
Weight (gr) 794
Bolt Circle Diameter (BCD) 96
Crankset Type Double
Drivetrain Compatibility Shimano10/11S, Sram10/11S
Holes Number 4
Material Alloy