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2018 Cannondale Synapse Carbon Disc SE vs 2016 Specialized Roubaix SL4 Expert Disc UDi2

The Specialized Roubaix SL4 Expert Disc UDi2 size closest to your 54 is the 54.0. Compare the 54.0 instead

What changes on the Specialized Roubaix SL4 Expert Disc UDi2

Compared with the Cannondale Synapse Carbon Disc SE in 54, the Specialized Roubaix SL4 Expert Disc UDi2 in 64.0 places the top of the head tube 87 mm higher and 27 mm further forward, relative to the bottom bracket. Its wheelbase is 46 mm longer, which can contribute to stability at speed.

Frame stack
+87 mm
Higher front end
Frame reach
+27 mm
Longer frame reach
Wheelbase
+46 mm
Longer: steadier at speed
Head angle
+1.3°
Steeper: sharper steering
Chainstays
n/a
One of the bikes has no number for this

The two frames

We can't draw these frames yet. The Cannondale Synapse Carbon Disc SE numbers we have for size 54 are missing the chainstay length. The numbers below still compare.

Geometry side by side

MeasurementCannondale Synapse Carbon Disc SE 54Specialized Roubaix SL4 Expert Disc UDi2 64.0Difference
Reach382409+27 mm
Stack570657+87 mm
Head tube angle71.773+1.3°
Seat tube angle73.972.5−1.4°
Effective top tube547616+69 mm
Wheelbase10081054+46 mm
BB drop7370−3 mm
BB height272272.5+1 mm
Standover773852+79 mm
Seat tube length480600+120 mm
Head tube length161260+99 mm
Chainstay lengthnot listed420
Fork lengthnot listed368

Differences are the Specialized Roubaix SL4 Expert Disc UDi2 minus the Cannondale Synapse Carbon Disc SE. Full charts: 2018 Cannondale Synapse Carbon Disc SE, 2016 Specialized Roubaix SL4 Expert Disc UDi2.

Where each sits in its class

Cannondale Synapse Carbon Disc SESpecialized Roubaix SL4 Expert Disc UDi2

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other road 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.

PartCannondale Synapse Carbon Disc SECarbon Disc Apex 1 SESpecialized Roubaix SL4 Expert Disc UDi2SL4 Expert Disc UDi2
FrameCannondale SynapseSpecialized SL4 FACT
ForkSynapseSpecialized FACT carbon
ShifterSRAM Apex 1 HRDShimano 785 Di2
DerailleurSRAM Apex 1Shimano Ultegra Di2
CassetteSRAM PG 1130Shimano Ultegra
ChainSRAM 1110Shimano Ultegra
CranksetSRAM Apex 1 BB30aShimano Ultegra
Bottom bracketFSA BB30Anot listed
TireWTB ExposureSpecialized Turbo Pro
HubFormula RX-512not listed
RimWTB STP i19 TCSnot listed
BrakeSRAM Apex 1 hydro, SRAM Apex 1 HRDShimano BR-785
HandlebarCannondale C3Specialized Expert
StemCannondale C3Specialized Pro SL
Bar tapeCannondale TapeSpecialized CX Pro
HeadsetSynapse Sinot listed
SeatpostCannondale C3Specialized CG-R
SaddleFabric Scoop Radius SportSpecialized Phenom Expert
Wheelsetnot listedFulcrum S-19

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