Quiver

2015 Specialized Epic 29 Frameset vs 2017 Trek X-Caliber

The S is the Trek X-Caliber size closest to your S Specialized Epic 29 Frameset. 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 29 Frameset in S, the Trek X-Caliber in S places the top of the head tube at about the same height and 12 mm further back, relative to the bottom bracket. Its wheelbase is 16 mm shorter, which can contribute to quicker direction changes.

Frame stack
−2 mm
About the same height
Frame reach
−12 mm
Shorter frame reach
Wheelbase
−16 mm
Shorter: quicker to change direction
Head angle
−1.2°
Slacker: calmer steering
Chainstays
−10 mm
Shorter: livelier

The two frames

We can't draw these frames yet. The Specialized Epic 29 Frameset numbers we have for size S are missing the seat angle. The numbers below still compare.

Geometry side by side

MeasurementSpecialized Epic 29 Frameset STrek X-Caliber SDifference
Reach393mm381−12 mm
Stack587mm585−2 mm
Head tube angle70.5°69.3°−1.2°
Effective top tube564mm560−4 mm
Chainstay length448mm438−10 mm
Wheelbase1082mm1066−16 mm
BB drop40mm48+8 mm
BB height332mm306−26 mm
Standover770mm745−25 mm
Seat tube length400mm394−6 mm
Head tube length90mm100+10 mm
Seat tube anglenot listed73.0°

Differences are the Trek X-Caliber minus the Specialized Epic 29 Frameset. Full charts: 2015 Specialized Epic 29 Frameset, 2017 Trek X-Caliber.

Where each sits in its class

Specialized Epic 29 FramesetTrek 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 29 FramesetS-Works 29 FramesetTrek X-Caliber7
ForkRockShox SID Worldnot listed
Rear shockFox Mini-Brainnot listed
Framenot listedTrek Alpha Gold
Shifternot listedShimano Acera M3000
Derailleurnot listedShimano Acera, Shimano Acera M3000
Cassettenot listedShimano HG20
Chainnot listedKMC X9
Cranksetnot listedShimano Acera M3000
Wheelsetnot listedFormula DC-20
Tirenot listedBontrager XR2
Hubnot listedFormula DC20, Formula DC22
Rimnot listedBontrager Connection
Brakenot listedShimano Acera M315
Seatpostnot listedBontrager SSR
Saddlenot listedBontrager Evoke 1.5

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