Compare Bikes

The Trek X-Caliber 8 and X-Caliber 9 are both 27.5″ / 29″ aluminum frame hardtail crosscountry bikes with high-end components. The X-Caliber 9 has a dropper post, a better fork, and a bigger fork. Explore the differences below.

2022 Trek X-Caliber 8
2022 Trek X-Caliber 9
MSRP$1,499$1,899
Online Price
$1

At

$1

At

CategoryCrosscountryCrosscountry
Weight28.8 lbs27.6 lbs
FrameAluminumAluminum
ForkRockShox Judy
RockShox Recon Gold RL
Wheel Size27.5″ / 29″27.5″ / 29″
Wheel MaterialAluminumAluminum
Brake TypeHydraulic DiscHydraulic Disc
GroupsetXT, Deore
XT, SLX
Drivetrain1 × 121 × 12
Gear Range

Trek X-Caliber 8

26 mph

Trek X-Caliber 9

26 mph
SuspensionHardtailHardtail
Front Travel80mm100mm
Rear Travel--
SeatpostRigidDropper
Brand Sitetrekbikes.comtrekbikes.com
Suggested Bikes

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$500$1,000$1,500
X-Caliber 8
X-Caliber 9

Geometry

Specs
Frame

Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR

Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR

Fork

Size: XS, RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, 42mm offset, Boost110, 15mm Maxle Lite, 80mm travel; Size: S, RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, Boost110, 15mm Maxle Lite, 100mm travel; Size: M, M/L, L, XL, XXL, RockShox Judy SL, Solo Air spring, TurnKey lockout, tapered steerer, Boost110, 15mm Maxle Stealth, 100mm travel

Size: S, RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 37mm offset, Boost110, 15mm Maxle Stealth, 100mm travel; Size: M, ML, L, XL, XXL, RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, 15mm Maxle Stealth, 100mm travel

Bottom Bracket

Shimano SM-BB52, 73mm, threaded external bearing

Shimano SM-BB52, 73mm, threaded external bearing

Headset

Semi-integrated, loose ball bearing, 1-1/8'' top, 1.5'' bottom

Semi-integrated, sealed cartridge bearing, alloy cups, 1-1/8'' top, 1.5'' bottom

Stem

Size: XS, S, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, M/L, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: L, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length

Size: S, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, ML, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: L, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length

Handlebar

Size: XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, M, Bontrager alloy, 31.8mm, 5mm rise, 720mm width; Size: M/L, L, XL, XXL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width

Size: S, M, Bontrager alloy, 31.8mm, 5mm rise, 720mm width; Size: ML, L, XL, XXL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width

Saddle

Bontrager Arvada, steel rails, 138mm width

Bontrager Arvada, steel rails, 138mm width

Seatpost

Size: XS, S, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: M, Bontrager alloy, 31.6mm, 12mm offset, 360mm length; Size: M/L, L, XL, XXL, Bontrager alloy, 31.6mm, 12mm offset, 400mm length

Size: S, M, TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length; Size: ML, L, XL, XXL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length

Grips

Bontrager XR Trail Comp, nylon lock-on

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

Shimano XT M8100, long cage, 51T max cog

Shimano XT M8100, long cage, 51T max cog

Crank

Size: XS, S, M, Shimano MT511, 30T steel ring, Boost (52mm chainline), 170mm length; Size: M/L, L, XL, XXL, Shimano MT511, 30T steel ring, Boost (52mm chainline), 175mm length

Size: S, M, Shimano MT611, 30T steel ring, alloy spider, Boost (52mm chainline), 170mm length; Size: ML, L, XL, XXL, Shimano MT611, 30T steel ring, alloy spider, Boost (52mm chainline), 175mm length

Shifters

Shimano Deore M6100, 12 speed

Shimano SLX M7100, 12 speed

Cassette

Shimano Deore M6100, 10-51, 12 speed

Shimano SLX M7100, 10-51, 12 speed

Chain

Shimano Deore M6100, 12 speed

Shimano SLX M7100, 12 speed

Brakes

Shimano MT200 hydraulic disc

Shimano hydraulic disc, MT4100 lever, MT410 caliper

Wheels
Rims

Size: XS, S, M, M/L, L, XL, XXL, Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, presta valve; Size: XS, S, M, M/L, L, XL, XXL, Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, presta valve

Size: S, M, ML, L, XL, XXL, Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, presta valve; Size: S, M, ML, L, XL, XXL, Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, presta valve

Spokes

14g stainless steel

Front Hub

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle

Rear Hub

Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost141, 5mm QR

Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost141, 5mm QR

Tires

Size: XS, S, Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60tpi, 27.5x2.35''; Size: M, M/L, L, XL, XXL, Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60tpi, 29x2.35''

Size: S, Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60tpi, 27.5x2.35''; Size: M, ML, L, XL, XXL, Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60tpi, 29x2.35''

Disk Rotors

Size: XS, S, M, M/L, L, XL, XXL, Shimano RT26, 6-bolt,160mm; Size: L, XL, XXL, Shimano RT26, 6-bolt,180mm

Size: S, M, ML, L, XL, XXL, Shimano RT56, 6-bolt, 180mm; Size: S, M, ML, L, XL, XXL, Shimano RT56, 6-bolt, 160mm