2021 Trek X-Caliber 8

A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with upper mid-range components, priced in the middle of the X-Caliber model range. Compare the full range

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2021 Trek X-Caliber 8
MSRP$1,329
Weight30.4 lbs
SuspensionHardtail
Travel80mm front
FrameAluminum
ForkRockShox Judy
Wheels27.5″ / 29″
Tire Clearance2.8"
Drivetrain1 × 12
GroupsetSX Eagle
BrakesHydraulic Disc

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Gearing

1 × 12 — 12 speed

X-Caliber 8

24 mph

Similar Bikes

27 mph

The X-Caliber 8 is easier to ride up hills than similar bikes.

The X-Caliber 8 won‘t keep up with similar bikes while riding downhill or sprinting.


Estimated Spec Level

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

Spec level →$0$200$400$600$800$1,000$1,200
This bike
Other crosscountry bikes

Geometry

Sizing
XS

4'5" – 5'2"

SM

5'0" – 5'6"

MD

5'3" – 5'8"

MD/LG

5'5" – 5'11"

LG

5'9" – 6'3"

XL

6'1" – 6'6"

XXL

6'4" – 6'8"


Specs
Build
Frame

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

BB StandardBSA, 73mm, threaded

Tire Clearance2.8"

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

Bottom Bracket

Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle

Headset

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

Stem

Size: XS, S, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: M/L, 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, M/L, L, XL, XXL, Bontrager alloy, 31.8mm, 5mm rise, 720mm width

Saddle

Bontrager Arvada, steel rails, 138 mm 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

Groupset
Rear Derailleur

SRAM SX Eagle

Crank

Size: XS, S, SRAM SX Eagle, GXP, 30T steel ring, Boost, 170mm length; Size: M, M/L, L, XL, XXL, SRAM SX Eagle, GXP, 30T steel ring, Boost, 175mm length

Shifters

SRAM SX Eagle, 12 speed

Cassette

SRAM PG-1210 Eagle, 11-50, 12 speed

Chain

SRAM SX Eagle, 12 speed

Brakes

Shimano MT200 hydraulic disc

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

Spokes

14g stainless steel

Front Hub

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

Rear Hub

Formula DCL-141Q, sealed bearing, 6-bolt, Shimano 10 freehub, Boost141, 5mm QR

Tires

Size: XS, S, Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.20''; Size: M, M/L, L, XL, XXL, Bontrager XR3 Comp, wire bead, 30tpi, 29x2.20''

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

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