The 2023 Trek Procaliber 9.5 is a lightweight carbon hardtail with the unique advantage of our trail-smoothing IsoSpeed decoupler. It's the most affordable carbon model in the Procaliber mountain bike family, and it's built for speed and efficiency on singletrack with a wide-range Shimano Deore 1x12 drivetrain, RockShox Judy SL fork, and speedy 29er wheels.