Quiver

2021 Giant Defy Advanced Pro vs 2023 Specialized Roubaix SL8 Comp

The Specialized Roubaix SL8 Comp size closest to your L is the 56. Compare the 56 instead

What changes on the Specialized Roubaix SL8 Comp

Frame stack
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One of the bikes has no number for this
Frame reach
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Wheelbase
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Head angle
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Chainstays
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One of the bikes has no number for this

The two frames

We can't draw these frames yet. The Giant Defy Advanced Pro numbers we have for size L are missing the head angle, seat angle, chainstay length and wheelbase. The numbers below still compare.

Geometry side by side

MeasurementGiant Defy Advanced Pro LSpecialized Roubaix SL8 Comp 54Difference
Reach390not listed
Stack605not listed
Head tube anglenot listed72.3
Seat tube anglenot listed74
Effective top tubenot listed550
Chainstay lengthnot listed420
Wheelbasenot listed1005
BB heightnot listed270
Standovernot listed766
Seat tube lengthnot listed465
Head tube lengthnot listed122

Differences are the Specialized Roubaix SL8 Comp minus the Giant Defy Advanced Pro. Full charts: 2021 Giant Defy Advanced Pro, 2023 Specialized Roubaix SL8 Comp.

Where each sits in its class

Giant Defy Advanced ProSpecialized Roubaix SL8 Comp

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.

PartGiant Defy Advanced ProAdvanced Pro 2Specialized Roubaix SL8 CompSL8 Comp
FrameGiant DefySpecialized FACT 10R
ForkGiant OverDrive 2Specialized Future Shock 3.2
ShifterShimano UltegraShimano 105
DerailleurShimano UltegraShimano 105
CassetteShimano cassetteShimano 105
ChainKMC X11SL-1Shimano 105
CranksetShimano Ultegra Mid CompactShimano 105
WheelsetGiant SLR-2 42DT Swiss G540
TireGiant Gavia Fondo 1S Works Mondo, S Works Mondo 2BR
BrakeShimano UltegraShimano 105
HandlebarGiant D-Fuse SLRSpecialized Hover
StemGiant Contact SLSpecialized Future Stem
SeatpostGiant D-Fuse SLRSpecialized S-Works Pavé
SaddleGiant Contact Fleet SLSpecialized Body Geometry Power Sport
Chainringnot listedShimano 105
Bottom bracketnot listedShimano 105
Rotornot listedShimano 105
Bar tapenot listedSupacaz Super Sticky Kush

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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