Trek x cal 7 upgrade to 1x Singletracks Mountain Bike News, Product Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › Trek x cal 7 upgrade to 1x Tweet Add to Flipboard Magazine. Viewing 0 reply threads Author Posts September 25, 2019 at 20:11 #270754 Uknowedt <p style=”text-align: center;”>Looking to see if this is a possibilities I am realizing that I need for gears to get thru stuff. I have a 2×9 shimano with press fit bottom bracket.</p> Thanks for the ideas In advance. Author Posts Viewing 0 reply threads You must be logged in to reply to this topic.