Quiver

2021 Trek Domane SL Gen 3 Frameset vs 2023 Specialized Allez Sport

The 54 is the Specialized Allez Sport size closest to your 54 Trek Domane SL Gen 3 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 Specialized Allez Sport

Compared with the Trek Domane SL Gen 3 Frameset in 54, the Specialized Allez Sport in 54 places the top of the head tube 6 mm lower and 4 mm further back, relative to the bottom bracket. Its wheelbase is 12 mm shorter, which can contribute to quicker direction changes.

Frame stack
−6 mm
Lower front end
Frame reach
−4 mm
Shorter frame reach
Wheelbase
−12 mm
Shorter: quicker to change direction
Head angle
+0.7°
Steeper: sharper steering
Chainstays
+5 mm
Longer: more planted

The two frames

We can't draw these frames yet. The Trek Domane SL Gen 3 Frameset numbers we have for size 54 are missing the seat angle. The numbers below still compare.

Geometry side by side

MeasurementTrek Domane SL Gen 3 Frameset 54Specialized Allez Sport 54Difference
Reach374370−4 mm
Stack575569−6 mm
Head tube angle71.3°72°+0.7°
Effective top tube542not listed
Chainstay length420425mm+5 mm
Wheelbase1010998mm−12 mm
BB drop8076mm−4 mm
Standover754781mm+27 mm
Seat tube length500510mm+10 mm
Head tube length160155mm−5 mm
Seat tube anglenot listed73.25°
BB heightnot listed274mm
Fork lengthnot listed378mm

Differences are the Specialized Allez Sport minus the Trek Domane SL Gen 3 Frameset. Full charts: 2021 Trek Domane SL Gen 3 Frameset, 2023 Specialized Allez Sport.

Where each sits in its class

Trek Domane SL Gen 3 FramesetSpecialized Allez Sport

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.

PartTrek Domane SL Gen 3 FramesetSL Gen 3 FramesetSpecialized Allez SportSport
FrameTrek OCLVSpecialized Allez E5
ForkTrek Domane SLSpecialized FACT
DerailleurTrek derailleurs must haveShimano Tiagra
Shifternot listedShimano Tiagra
Chainnot listedKMC X10
Cranksetnot listedPraxis Alba
Chainringnot listedPraxis Alba
Wheelsetnot listedSpecialized Axis Sport
Tirenot listedSpecialized Roadsport
Brakenot listedShimano Tiagra
Handlebarnot listedSpecialized Shallow Drop
Saddlenot listedSpecialized Bridge Saddle

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