ZIPP Service Course Sattelstütze - 31.6mm 0mm Offset / Schwarz Lastenrad and the rim base is

and the rim base is a full 7 mm wider at 23 mm

Weight: 650g

K number: K1641

Shimano BB-RS501 bottom bracket

As a versatile city hopper

ZIPP Service Course Sattelstütze - 31.6mm 0mm Offset / Schwarz Lastenrad and the rim base isZIPP Service Course Seatpost 31. 6mm 0mm Offset Black Lightweight and strong with safety in mind, the Zipp Service Course seatpost is designed to provide a precise riding position at a reasonable price. The downward facing screw is easily accessible, making it easy to adjust and fine tune the seat post after assembly. A better riding position means better performance, which makes you faster. A saddle that isn't in the right position means energy is