SPEEDY, NIMBLE, AND EFFICIENT - THE TREK X-CALIBER 9.Just getting into serious racing? You'll love the high-end XC parts on an awesome frame: the clutch rear derailleur prevents chain slap, front and rear Boost hub spacing opens the door for high-end wheel upgrades, and the 31.6mm seat tube gives you the option to install a dropper post when you want to tackle the rowdier terrain. Cover more trail in less time with this competition-level bike that can give you an advantage on the trail.FEATURES Lightweight Alpha Gold Aluminum frame RockShox Judy Silver fork with remote lockout Bontrager Kovee wheels Boost110 thru axle front hub Shimano XT/SLX 2x11 drivetrain Clutch-equipped rear derailleurTECH SPECS Weight: 17.5? - 13.19 kg / 29.07 lbs (with tubes) This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg)