chain length if I change my chainring Forums › Mountain Bike Forum › chain length if I change my chainring Tweet Add to Flipboard Magazine. Tagged: chainring shimano absolute black Viewing 0 reply threads Author Posts December 27, 2020 at 17:32 #556309 jcrwzr Hello! I want to change out my chainring to an absolute black oval chainring. current drivetrain is 32T front chainring shimano slx 7100 10-51 shimano cassette slx 7100 If I changed to a 30t round chainring, or an oval chainring 30t or 28t, will I need to change the length of my chain? Thanks, everyone! Author Posts Viewing 0 reply threads RELATED TOPICS Topic Voices Posts Freshness chain length if I change my chainring Started by: jcrwzr in: Mountain Bike Forum 1 1 3 weeks, 4 days ago jcrwzr You must be logged in to reply to this topic.