Custom designed for the Cannondale SystemSix seatpost.
3D printed with engineering-grade nylon carbon fiber. The perfect blend of strength and durability. Super light weight.
Choose your model. The BD, SO or the WA.
Easy to Install:
BD: Use the elastic band to keep it in place.
SO: Just remove your seatpost and slip it on. The snug fit keeps it in place.
WA: Wrap it around the seatpost and secure it with the nut and bolt.
One frame number holder
One 4mm stainless steel socket head bolt
One #8 stainless steel nylon insert lock nut
One elastic band (BD only)
A word of caution when placing your bike on a roof rack with a frame number attached.