KFX -12° MTB Stem


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Titanium offers a reduction in weight compared to steel, while guaranteeing excellent resistance.


Carbon Structural Integration (CSI) is a fusion of carbon fiber and aluminum. A structural outer layer of carbon fiber is wrapped around a component's aluminum core to increase the part's stiffness and create an elegant carbon aesthtetic.


The new KFX range brings a new selection of lightweight and stiff components for mountain bikes.


Kross Racing Team
Maloja Pushbikers XC Team
Team Bulls
Team Trek Pirelli
Velcan Pro MTB
The Maxime's set-up

XC French champion Maxime Marotte and his mechanic Andy from Team Santa Cruz-FSA spotted in Nalles for Internazionali d'Italia Series present their Santa Cruz bike equipped with FSA KFX range.


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 grammi (100mm)


Code Type
175-0042067030 ST MTB KFX Carbon CSI 100mm -12° A0
175-0042068030 ST MTB KFX Carbon CSI 110mm -12° A0
175-0042069030 ST MTB KFX Carbon CSI 120mm -12° A0
175-0042082030 ST MTB KFX Carbon CSI 130mm -12° A0
175-0042093030 ST MTB KFX Carbon CSI 140mm -12° A0
175-0042063030 ST MTB KFX Carbon CSI 60mm -12° A0
175-0042064030 ST MTB KFX Carbon CSI 70mm -12° A0
175-0042065030 ST MTB KFX Carbon CSI 80mm -12° A0
175-0042066030 ST MTB KFX Carbon CSI 90mm -12° A0


Type Stems
Series KFX
Discipline MTB
Material Alloy
Angle -12°