- 31.8 bar clamp diameter with smooth edges for carbon bar compatibility
- Machined 7000 series extruded bar stock
- Bolts are custom heat treated with corrosion preventative plating
- Stack height is 41mm
- Use SM5320 to adapt 1-1/8″ threadless stem to 1″ threadless steerer
The Thomson X4 Stem is stronger and lighter than their older Elite stem. A good part of this weight savings comes from the change in design. Where the Elite used an internal wedge clamp, this X4 relies on a more traditional split clamp for the steerer interface. While it meant losing the knee-saving shape on the Elite, the clamp bolts are pretty minimal given the sculpted design. The Thomson X4 Stem is CNC machined from 7000 series aluminum alloy. It has a 31.8mm clamp diameter. It’s available in Black or Silver and with a zero (90) or ten (100) degree rise.
Product Features
- Material: 7000-series aluminum
- Bar Diameter: 31.8 mm
- Steer Tube Diameter: 1.125 in
- Length: 50 mm, 70 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm
- Rise: 0 deg, 10 deg
- Bar Attachment: 4-bolt
- Weight: 174 g
- Recommended Use: XC, freeride
- Manufacturer Warranty: 3 years