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FSA

FSA KFX Mountain Bike Stem Carbon/Aluminum 100mm -12° 31.8

FSA KFX Mountain Bike Stem Carbon/Aluminum 100mm -12° 31.8

Regular price $163.99 USD
Regular price Sale price $163.99 USD
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Stem Length
FSA KFX Mountain Bike Stem Carbon/Aluminum 100mm -12° 31.8

The KFX Stem is 3D forged and CNC-machined from AL2014 alloy. Then it’s combined with a carbon structure using FSA CSI (Carbon Structural Integration) technology. CSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminum and carbon. Riders have the option to run this stem at + or -12° to suit their riding style. For those whom a 20° drop is too much, a slightly less aggressive lightweight option is also available.
  • 3D forged and CNC machined AL2014
  • Carbon structured integration (CSI)
  • Titanium hardware
  • 31.8 clamp diameter
  • 35mm clamp stack height
  • Weight: 143 gram (100mm)


  • The KFX Stem is 3D forged and CNC-machined from AL2014 alloy that is then combined with a carbon structure using FSA CSI (Carbon Structural Integration) technology
  • CSI is a process that permanently bonds carbon to alloy to create a true hybrid product, with many of the benefits of aluminum and carbon
  • 35mm clamp stack height
  • Titanium hardware
  • Angle: -12¬∞
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