At first glance the Birdcage rim looks like a fairly normal “aero” style rim, but as the name suggests, the GSport Birdcage rim has a hollow bead just like birds have hollow bones. This saves weight while keeping them strong as ever, to help you soar!
The GSport Birdcage is definitely one high tech rim.
- Hollow rim bead
- Cross lace design with high spoke offset to create a laterally stronger rim
- Rim cross-section matches spoke angles to support the spoke nipples as much as possible
- Offset valve hole retains more strength & easier pump installation
- Slim sidewalls still allows room for brake pads
- Outperforms most other rims while remaining 20
- 30% lighter
- Weight: 408 grams / 14.4oz