# 12sp XTR Di2 on Road Bike

**URL:** <https://community.escapecollective.com/t/12sp-xtr-di2-on-road-bike/5116>\
**Category:** Tech Help\
**Tags:** road, mountain-bike\
**Created:** [March 4, 2026, 11:30pm UTC](https://community.escapecollective.com/t/12sp-xtr-di2-on-road-bike/5116 "2026-03-04T23:30:59Z")\
**Posts on this page:** 2\
**Page:** 3

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**Author:** ![Drew](https://community.escapecollective.com/user_avatar/community.escapecollective.com/drew/32/94_2.png) [@Drew](https://community.escapecollective.com/u/Drew)\
**Post date:** [October 10, 2026, 10:36am UTC](https://community.escapecollective.com/t/12sp-xtr-di2-on-road-bike/5116/41 "2026-10-10T10:36:49Z")

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Thanks, this is exactly what I was hoping to hear! The GRX derailleur only comes in medium cage - how did you set the chain length and B gap?

Examples I saw from pro teams were using the short cage XTR

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**Author:** ![Stochastic](https://community.escapecollective.com/user_avatar/community.escapecollective.com/stochastic/32/9678_2.png) [@Stochastic](https://community.escapecollective.com/u/Stochastic)\
**Post date:** [October 11, 2026, 2:11am UTC](https://community.escapecollective.com/t/12sp-xtr-di2-on-road-bike/5116/42 "2026-10-11T02:11:12Z")

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you sure the sgs (long cage) derailleur will work well with the 9-45 cassette? it seems weird that they would make a shorter cage version if that’s actually the case.

[Previous page](https://community.escapecollective.com/t/12sp-xtr-di2-on-road-bike/5116.md?page=2)