Profile Design's Aerobar Bracket Riser Kit lets you customize the height of your Profile aero bar brackets and extensions for finding a perfect riding position. The kit includes two 10mm risers, two 5mm risers and appropriate-length bolts. Multiple kits can be used if you need more height. Note that this kit is not recommended for Profile Design's Carbon Stryke or T-mag bars.
Clamp diameter: 31.8mm