2021 Trek

X-Caliber 8

A 29″ / 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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MSRP$1,329
Weight30.4 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkRockShox Judy
Wheels29″ / 29″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle
BrakesHydraulic Disc
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Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
X-Caliber 8
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

24 mph

X-Caliber 8

27 mph

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Highest gear

(descending)

Spec Level

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

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Sizing
18.5"

5'5" – 5'11"

Rider Fit Notes

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

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

BB StandardBSA, 73mm, Threaded

Tire Clearance2.8"

ColorLithium Grey / Trek Black

Fork

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

Travel100mm

Spring TypeAir

Bottom Bracket

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

Headset

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

Stem

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

Handlebar

Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width

Saddle

Bontrager Arvada, steel rails, 138 mm width

Seatpost

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

TypeRigid

Pedals

VP-536 nylon platform

Groupset
Rear Derailleur

SRAM SX Eagle

Crank

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

TypeHydraulic Disc

Wheels
Rims

Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve

Spokes

14 g stainless steel

Front Hub

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

Rear Hub

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

Tires

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

Disc Rotors

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

Rider Notes
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Last updated March 18
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