The 2019 Trek X-Caliber 8 is a light & fastaluminiumcross-country mountain bike with a 100mm Rockshoxfork, hydraulic disc brakes & a 2x 10 Shimano XT drivetrain. X-Caliber 8 is a cross-country mountain bike made for fast laps & long days on the trail. Its built with special attention to value & the parts that make the biggest difference in performance. A Shimano drivetrain, Rock Shox fork & hydraulic disc brakes make it a great choice for new mountain bikers & XC racers searching for fast, fun, singletrack adventure. A lightweight Alpha Gold Aluminium frame, a Rock Shox 30 Silver suspension fork with a lockout & an air spring thats lighter & more adjustable than a coil spring, Bontrager Kovee Tubeless Ready wheels with Boost 141 hub spacing & a smooth, efficient Shimano Deore/XT 2x 10 drivetrain with a Shimano XT Shadow rear derailleur, which stays tucked out of the way to avoid snagging on trail debris. With X-Caliber 8, youre getting a performance frame paired with performance parts, like a Rock Shox air fork anda rear derailleur thats the gold standard for MTB performance & reliability. Plus, its equipped with durable, lightweight alloy rims that save weight & are easy to upgrade to tubeless. This Bike Is Perfect For The rider that is looking for a fast mountain bike for singletrack – one thats fully capable of taking on races, marathons & competitive group rides. You want something that is reliable & fun with dependable, lightweight parts. Key Features It has the price of a more basic hardtail & the performance of a more expensive one The Rock Shox air fork can be tuned to the riders weight, so you always have a custom ride thats right for you The frame is fully compatible with higher-end parts, like race wheels & a dropper post, if you ever find the need to upgrade Smart Wheel Sizing means youll get the fastest wheel that fits (29? wheels on larger frames, 27.5? wheels on smaller frames)