Box Components 22.2 X 1-1/8" Centre Clamp Stem

Box Two Centre clamp Hollow stems are cold forged from the highest quality 6061-T6 aluminium available. Featuring an open skeletal design and a dual mid-bolt wedge mounting system, they are lightweight yet maintain a very high level of strength. A 53mm extension stem weighs just 218 grams/7.7 ounces. By removing the rear pinch bolts and moving the mounting bolts to the middle of the stem, we reduced the weight and size and eliminated a serious hazard to the rider’s knees.  These stems come with either a 48 or 53mm extension and a 22.2mm bar bore. To ensure proper clamping force, the stem must be mounted on a fork with at least 45mm of exposed steerer tube. This stem can be installed either side up to give a 5-degree rise or drop. Note: Not compatible with forks that have carbon fibre steerer tubes  

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