2017 Trek X Caliber 8 (27.5) Matte Viper Red - SlyRed's Bike Check - Vital MTB
Trek Xcaliber 8 2017 Review - YouTube
Trek X-Caliber 8 29er (Size Medium) – South Tampa Bicycle Co.
X-Caliber 8 - Trek Bikes
Trek X-Caliber 8 used in XL | buycycle
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