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 FeaturesMaterial: 7000-series aluminumBar Diameter: 31.8 mmSteer Tube Diameter: 1.125 inLength: 50 mm, 70 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mmRise: 0 deg, 10 degBar Attachment: 4-boltWeight: 174 gRecommended Use: XC, freerideManufacturer Warranty: 3 years