GSport Birdcage Rim

The hollow bead construction mimics the structure of bird bones to reduce weight without sacrificing structural integrity. It keeps the rim light while remaining chunky enough to resist flat spots and pinch flats during hard landings.

Yes, the sidewalls are specifically machined to be compatible with standard rim brakes. Despite the rim's slimmed-down profile, it retains the necessary surface area for reliable stopping power.

Traditional aero rims often suffer from structural weakness at the valve hole. By offsetting the hole, GSport maintains the rim's strength in that critical area while also making it easier to attach your pump head.

Not at all. The rim features a deep center channel designed specifically to give you plenty of slack, making tire installation and removal much easier than on many other high-performance rims.

By adapting the cross-lacing pattern to the narrow inner wall, the design increases the spoke offset. This creates a wider bracing angle, which significantly improves the lateral stiffness and overall strength of the built wheel.