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 (2016) review - MBR
Trek X-Caliber 9 15.5in Bike - 2016 | The Pro's Closet
X-Caliber 8 | Trek Bikes (ES)
2016 Trek X Caliber 8 | Mountain Bike Reviews Forum