Custom designed for the Trek Madone 9 seatmast.
3D printed with engineering-grade nylon carbon fiber. This new material is amazing. The perfect blend of strength and durability.
2.9 grams without bolt, nut and elastic band
Easy to install:
Place it on your seatmast and then use the elastic band to keep it in place.
One frame number holder
One 4mm socket head bolt
One #8 nylon lock nut
One elastic band
A word of caution when placing your bike on a roof rack with a frame number attached.