Pro Tharsis XC Stem (Black) (31.8mm) (100mm) (6°)

Pro Tharsis XC Stem (Black) (31.8mm) (100mm) (6°)
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Price: $149.99

Length/Reach | Stem Angle:

  • 90mm | 6°
  • 100mm | 6°
  • 100mm | 17°

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Named after the 15km-high volcanoes of Mars, Tharsis is synonymous with long days in the mountains and the spirit of discovery and adventure. Tharsis components have the strength to tackle the most rugged terrain while retaining low weight – because you have to ride up the mountain before you can come back down. We offer the Tharsis line-up in high-strength aluminum alloy which has a distinctive and stylish graphical treatment so that Tharsis parts look as good as they perform


  • 31.8mm Bar Clamp
  • Headlock system
  • Headset adjuster
  • Di2 cable integration ready
  • Titanium bolts
  • Incl. cable and topcover
  • This is a total system--no starnut or expander needed
  • Color: Black
  • Avg Wt: 145g
Bar Diameter: 31.8mm 
Steerer Diameter: 1-1/8" (28.6mm) 
Length/Reach: 80, 90, 100, 110, 120mm 
Stem Angle: 6°, 17° 
Stack Height: 40mm 
Material: Aluminum 
Color: Black
Weight: 145g (100mm) 

Note: Pro no longer includes an expander unit with this stem. 

This product was added to our catalog on March 29, 2017