KTM 390 Duke (2017-2018)
Chain Size & Slack
The KTM 390 Duke (2017-2018) uses a 520 chain with 5–7 mm slack.
Chain Size & Slack
Chain size520
Chain slack5–7 mm
FAQ
What chain size is on the KTM 390 Duke (2017-2018)?
520.
What is the specified chain slack?
5–7 mm