2021 Trek Supercaliber 9.9 XC FS MTB / XX1 Eagle AXS / ROCKSHOX SID / XXL / 23in



$6,999.95 Regular price $11,049.99
by Trek

Trek Supercaliber 9.9 XX1 Eagle AXS // ROCKSHOX SID // HIGHEST END BUILD // CARBON EVERYTHING // XXL // 23in 2022

Supercaliber 9.9 XX1 AXS is the fastest, lightest, and most capable cross country race bike we make. The exclusive IsoStrut integrated shock is the cornerstone of Supercaliber's efficient suspension system, giving you a fast and light ride that charges through rugged terrain at breakneck speed. A high-end mountain bike parts spec features a fully wireless SRAM XX1 Eagle AXS electronic drivetrain.

It's right for you if... You're gunning for the top spot and looking for a pro-level cross country race bike that has top-of-the-line everything. You want a bike that comes spec’d with the best parts and suspension available—including a fully wireless electronic drivetrain—for knock-out, drag-out speed and capability.

The tech you get An ultra-lightweight, full OCLV Mountain Carbon frame with 60mm of travel, a 100mm RockShox SID Ultimate fork, and Trek's exclusive IsoStrut FOX Factory shock designed specifically for Supercaliber. Plus, a SRAM XX1 Eagle AXS 1x12 wireless electronic drivetrain, Bontrager carbon wheels with a 54-tooth DT Swiss rear hub for fast engagement, and a Bontrager RSL integrated bar/stem.

The final word If you don’t podium, sorry, but you can’t blame it on this bike. Its insanely light carbon frame is spec'd for the pros using the most advanced MTB components out there, including our cutting-edge IsoStrut integrated shock and a fully wireless SRAM XX1 Eagle AXS drivetrain.

Why you'll love it The SRAM XX1 Eagle AXS drivetrain is smart, smooth, and completely wireless Our exclusive IsoStrut shock provides tuneable, damped suspension for a smooth and efficient ride without the weight of full suspension Pivotless seat stays save on weight and actively bend to help soak up trail chatter The OCLV Carbon RSL integrated bar/stem is ultralight, ultra-comfortable, and it looks awesome Wider Kovee XXX 30 wheels provide better tire support so you can run lower pressure and get more traction

Recommended for riders 195-203cm (6'5"-6'8") with inseam of 92-95cm (36"-37")


Frame OCLV Mountain Carbon main frame & stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60mm travel

Fork RockShox SID SL Ultimate, DebonAir spring, Charger Race Day, damper, 44mm offset, Boost110, 15mm Maxle Stealth, 100mm travel

Lockout RockShox TwistLoc Full Sprint Remote 2-position

Shock Trek IsoStrut, Fox Factory shock, air spring, DPS 2-position remote damper, Kashima Coat, 235mm x 32.5mm

Max compatible fork travel 120mm (531mm axle-to-crown)


Wheel front Bontrager Kovee XXX, OCLV Mountain Carbon, Tubeless Ready, centerlock, Boost110, 15mm thru axle

Wheel rear Bontrager Kovee XXX, OCLV Mountain Carbon, Tubeless Ready, DT Swiss 54T engagement, centerlock, SRAM XD driver, Boost148, 12mm thru axle

Skewer rear Bontrager Switch thru axle, removable lever

Tire Bontrager XR2 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.20''

Tire part Bontrager TLR sealant, 6oz

Rim strip Bontrager TLR

Max tire size Frame: 29x2.40" Fork: See manufacturer


Shifter SRAM XX1 Eagle, 12 speed

Rear derailleur SRAM XX1 Eagle

Crank SRAM XX1 Eagle AXS Carbon, DUB, 34T alloy ring, Boost (52mm chainline), 175mm length

Bottom bracket SRAM DUB, 92mm, PressFit

Cassette SRAM Eagle XG-1299, 10-52, 12 speed

Chain SRAM XX1 Eagle, 12 speed

Max chainring size 36T


Saddle Bontrager Montrose Pro, 7x10mm carbon rails, 138mm width

Seatpost Bontrager XXX, OCLV Carbon, 31.6mm, 0mm offset, 400mm length

Bar/Stem Bontrager RSL MTB, OCLV Carbon, 35mm, 0mm rise, 750mm x 90mm -13d stem

Headset Knock Block Integrated, 62-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom

Brake SRAM Level Ultimate 4-piston hydraulic disc, carbon levers

Brake rotor SRAM CenterLine X, centerlock, round edge

Rotor size Max brake rotor sizes: 180mm front, 160mm rear

Weight M - 9.29 kg / 20.48 lbs (with tubes)