Quiver

2017 Specialized Epic FSR Comp vs 2017 Trek X-Caliber

The XL is the Trek X-Caliber size closest to your XL Specialized Epic FSR Comp. 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 FSR Comp in XL, the Trek X-Caliber in XL places the top of the head tube 14 mm lower and 4 mm further back, relative to the bottom bracket. Its wheelbase is 3 mm shorter, which can contribute to quicker direction changes.

Frame stack
−14 mm
Lower front end
Frame reach
−4 mm
Shorter frame reach
Wheelbase
−3 mm
Shorter: quicker to change direction
Head angle
−0.9°
Slacker: calmer steering
Chainstays
−3 mm
Shorter: livelier

The two frames

2017 Specialized Epic FSR Comp (XL) and 2017 Trek X-Caliber (XL), lined up at the bottom bracketBoth frames drawn to scale. The Specialized Epic FSR Comp is drawn in full with its measurements, and the Trek X-Caliber is the colored outline on top.J 1168

Specialized Epic FSR Comp, XLTrek X-Caliber, XLDrawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSpecialized Epic FSR Comp XLTrek X-Caliber XLDifference
Reach462mm458−4 mm
Stack634mm620−14 mm
Head tube angle70.5°69.6°−0.9°
Seat tube angle74°72.0°−2.0°
Effective top tube647mm659+12 mm
Chainstay length448mm445−3 mm
Wheelbase1168mm1165−3 mm
BB drop40mm53+13 mm
BB height332mm316−16 mm
Standover793mm825+32 mm
Seat tube length520mm521+1 mm
Fork length506mmnot listed
Head tube length145mm120−25 mm

Differences are the Trek X-Caliber minus the Specialized Epic FSR Comp. Full charts: 2017 Specialized Epic FSR Comp, 2017 Trek X-Caliber.

Where each sits in its class

Specialized Epic FSR CompTrek 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 FSR CompFSR CompTrek X-Caliber7
ForkRockShox Reba RLnot listed
Rear shockFox Epicnot listed
ShifterShimano SLX M7000Shimano Acera M3000
DerailleurShimano SLX M7025, Shimano XT M8000Shimano Acera, Shimano Acera M3000
CassetteShimano SLX M7000Shimano HG20
ChainKMC X11 ELKMC X9
CranksetRace Face AeffectShimano Acera M3000
TireSpecialized Fast TrakBontrager XR2
RimRoval ControlBontrager Connection
BrakeShimano Deore M506Shimano Acera M315
GripsSpecialized Sip Gripnot listed
SaddleSpecialized Phenom CompBontrager Evoke 1.5
Framenot listedTrek Alpha Gold
Wheelsetnot listedFormula DC-20
Hubnot listedFormula DC20, Formula DC22
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.

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