What is the size of the seat post clamp / seat post of the Urban Arrow Family?

The size of the seat post clamp is 36,4 mm and the size of the seat post itself is 31,6 mm. Be aware that not all seatpost can be used on the Urban Arrow. Only seatposts approved by UA for use in our bikes (due to seatpost angle).

Seatpost that can be used on the bikes are:

2022 and newer models - standard:

Seatpost with groove, the Promax SP-2052 (31,6x400mm)
UA article number: UA02-1203

Seatpost clamp with locking screw, the Promax 403QX (36.4).
UA article number: UA02-1209 

2021 and older models: SATORI Trident (UA4 2019) 400mm

UA Article number: UA02-1188

Seatpost with suspension (all model years) Seatpost, By.Schulz G2 ST 31.6x450mm

UA Article number: UA02-1263