Does 12s road cassette (ultegra) need a spacer ?

[marzipan]

Hi everybody,

I got a direto xt-r, and I got a problem with my shifting. First there is a lot of friction when I change gear and I can't reach the highest gear.
I checked the spacers from the home trainer to match it with the length of my thru-axle (142 mm), I use the exact same cassette (shimano ultegra 12s 11-30) and according to the user guide, it does'nt need any spacer or adjustments.

Can anyone help me on that matter ? Thx a lot

[steve.hammatt]

This detailed guide from the Zwift forums should help:

https://forums.zwift.com/t/guide-to-dir ... ve_hammatt