2017 Trek X Caliber 8 (27.5) Matte Viper Red - SlyRed's Bike Check - Vital MTB
2017 Trek X-Caliber 8 Series 29 for Sale in San Rafael, CA - OfferUp
Someone is selling this Trek X Caliber 8. Looks like a 2016-2017 and they're asking $600. Would this be a step in the right direction upgrading from a Trek Marlin 4? : r/mountainbiking
Trek X-Caliber 8 Mountain Bike - G2 Geometry in Southern Snow - YouTube