Trek Procaliber 9.9 (custom) - 2021, Large

2021 Custom Trek Procaliber 9.9, Size L is an elite-level cross-country hardtail built for pure speed, efficiency, and race-day performance. The ultra-light OCLV carbon frame paired with Trek’s IsoSpeed technology delivers a fast, responsive feel while reducing trail chatter for added comfort on long XC efforts. This custom build features a top-tier SRAM XX1 AXS wireless 1x12 drivetrain with a 10–50 cassette and 40T chainring, offering crisp, instantaneous shifting and a race-focused gear setup. Suspension duties are handled by the Fox 32 Step-Cast Factory fork with Kashima coating and 100mm travel, perfectly tuned for aggressive XC riding. Rolling on DT Swiss XMC 1200 carbon wheels with Bontrager XR1 Team Issue tires, this bike is tubeless-ready and exceptionally fast on climbs and hardpack terrain. With premium carbon components throughout—including Bontrager XXX carbon bars and seatpost—this Procaliber tips the scales at an incredible ~20 lb, has only ~100 miles, and is in excellent pre-owned condition.

Why we love it

We love this Procaliber because it’s a no-compromise XC weapon. At just 20 pounds with a full XX1 AXS wireless drivetrain and DT Swiss carbon wheels, it delivers explosive acceleration, razor-sharp handling, and effortless climbing efficiency. It’s the kind of bike built for podiums, PRs, and riders who appreciate absolute top-tier components in a clean, minimalist hardtail package that still feels surprisingly comfortable and incredibly fast.