Hello everybody,

I have bought this new (to me) Cube Attain Pro frame recently for building up my endurance/longer distance cycling and club rides with a bit more relaxed geometry. Therefore, the aim is to have comfort whilst maintaining a little bit of a performance stance.

The issue is that im struggling to choose the correct stem length - I am 5ft 10 on the dot and have a cycling inseam of 32” - the frame size is a 56.

The first two pictures show a 100mm stem and the second two pictures show a 90mm stem. I think from watching footage back I need to work on my posture/keeping a straight back, especially with the shorter stem which produces a more round shape when I get lazy. I am however a little confused because it seems like a lot of people I see out riding are quite upright compared to how I look in these pictures.



I am only a student so cannot afford a professional fitting at this time so any advice as to my reach/posture from anybody here would be greatly appreciated! Thanks