Box Two Center Clamp Race Stem

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  • The Box Two Hollow Center Clamp stem is cold forged from the highest quality 6061-T6 aluminum 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 218g/7.7oz. By removing the rear pinch bolts and moving the mounting bolts to the middle of the stem, Box reduced the weight and E3size and eliminated a serious hazard to the rider’s knees. These stems come with either a 48mm or 53mm extension and have a 22.2mm clamping diameter. To ensure proper clamping force, the stem must be mounted on a fork with at least 45mm of exposed steerer tube. Not compatible with forks that have carbon fiber steerer tubes.

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Product Specs
  1. TYPE: Front Load
  2. REACH: 40mm/45mm/48mm/53mm
  3. RISE: 5mm
  4. CLAMPING DIAMETER: 22.2mm
  5. WEIGHT: 218g/7.7oz (53mm)
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