My current set up is a 40mm stack, so I'd by 15mm higher over the steerer. Aside from maybe needing an extended headset bolt, would not having a spacer above the stem be an issue?
In the pic used they don't use a top spacer…. but not sure if this is just Stridsland jank.
by hotpot32
2 Comments
As long as the top bolt in the stem is below the top of the steerer you are fine.
You do not need a spacer above the stem
“the height of the steering column relative to the stem…. should be about 3mm (1/8″) below the level of the stem”
https://www.parktool.com/en-us/blog/repair-help/how-to-adjust-a-threadless-headset?
What is changing in your setup other than the spacers? I am not clear on why you think you would need a longer bolt.