The maximum chainring size that’s compatible is a 36t. The maximum oval chainring size that’s compatible is a 34t. One thing to consider is that the Spirit Guide will not be as effective when an oval chainring is installed.
Thunderbolt Maximum Chainring Size Print
Modified on: Fri, 12 Jun, 2020 at 5:57 PM
Did you find it helpful?Send feedback
Sorry we couldn't be helpful. Help us improve this article with your feedback.