Quiver

2012 Specialized Epic Comp 29 vs 2014 Trek X-Caliber

The XS is the Trek X-Caliber size closest to your S Specialized Epic Comp 29. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.

What changes on the Trek X-Caliber

Compared with the Specialized Epic Comp 29 in S, the Trek X-Caliber in XS places the top of the head tube at about the same height and 14 mm further back, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.

Frame stack
−1 mm
About the same height
Frame reach
−14 mm
Shorter frame reach
Wheelbase
−5 mm
Shorter: quicker to change direction
Head angle
−1.5°
Slacker: calmer steering
Chainstays
−3 mm
Shorter: livelier

The two frames

2012 Specialized Epic Comp 29 (S)The Specialized Epic Comp 29 frame drawn to scale.J 1075

Only the Specialized Epic Comp 29 is drawn. The Trek X-Caliber numbers we have for size XS are missing the seat angle.

Geometry side by side

MeasurementSpecialized Epic Comp 29 STrek X-Caliber XSDifference
Reach386mm372−14 mm
Stack586mm585−1 mm
Head tube angle70.5°69.0°−1.5°
Seat tube angle69.5°not listed
Chainstay length448mm445−3 mm
Wheelbase1075mm1070−5 mm
BB height331mm311−20 mm
Standover755mm660−95 mm
Seat tube length394mm343−51 mm
Effective top tubenot listed540
BB dropnot listed58
Head tube lengthnot listed100

Differences are the Trek X-Caliber minus the Specialized Epic Comp 29. Full charts: 2012 Specialized Epic Comp 29, 2014 Trek X-Caliber.

Where each sits in its class

Specialized Epic Comp 29Trek X-Caliber

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other XC bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartSpecialized Epic Comp 29Comp 29Trek X-Caliber4
ForkRockShox Reba RL 29SR Suntour M3030
Rear shockFox Mini-Brainnot listed
ShifterSRAM X-7Shimano Altus EF51
DerailleurSRAM X-7, SRAM X-9Shimano Altus, Shimano Altus M280
CassetteSRAM PG-1030Shimano HG31
ChainKMC X10not listed
CranksetSRAM S-1250Shimano M131
TireSpecialized S-Works Fast Trak, Specialized Renegade ControlBontrager XR1
HubSpecialized Hi Lonot listed
BrakeAvid Elixir 7 SL, Avid ElixirTrek HL 280
SaddleSpecialized PhenomBontrager Evoke 1
Framenot listedTrek Alpha Gold
Wheelsetnot listedFormula DC-20
Stemnot listedBontrager Approved
Seatpostnot listedBontrager SSR

Know what is on every bike.

Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.

Explore the app
A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet