Diamondback XC trail fork Singletracks Mountain Bike News, Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › Diamondback XC trail fork Tweet Add to Flipboard Magazine. Tagged: 27.5, diamondback, XC Viewing 0 reply threads Author Posts June 19, 2016 at 22:02 #191156 zheka8 I have a diamondback sorento 27.5 bike with a XC trail fork. I think the specs mention 50mm of travel but I feel like it doesn’t move at all. Anybody familiar with this form an d know if it’s adjustable? Author Posts Viewing 0 reply threads You must be logged in to reply to this topic.