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2023 Specialized Aethos FACT 10r Carbon vs 2022 Specialized Tarmac SL6

The Specialized Tarmac SL6 size closest to your 54 is the 54. Compare the 54 instead

What changes on the Specialized Tarmac SL6

Compared with the Specialized Aethos FACT 10r Carbon in 54, the Specialized Tarmac SL6 in 52 places the top of the head tube 17 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
−17 mm
Lower front end
Frame reach
−4 mm
Shorter frame reach
Wheelbase
−3 mm
Shorter: quicker to change direction
Head angle
−0.5°
Slacker: calmer steering
Chainstays
±0 mm
About the same

The two frames

2023 Specialized Aethos FACT 10r Carbon (54) and 2022 Specialized Tarmac SL6 (52), lined up at the bottom bracketBoth frames drawn to scale. The Specialized Aethos FACT 10r Carbon is drawn in full with its measurements, and the Specialized Tarmac SL6 is the colored outline on top.J 978

Specialized Aethos FACT 10r Carbon, 54Specialized Tarmac SL6, 52Drawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSpecialized Aethos FACT 10r Carbon 54Specialized Tarmac SL6 52Difference
Reach384mm380mm−4 mm
Stack544mm527mm−17 mm
Head tube angle73°72.5°−0.5°
Seat tube angle74°74°±0.0°
Chainstay length410mm410mm±0 mm
Wheelbase978mm975mm−3 mm
BB drop72mm74mm+2 mm
BB height268mm266mm−2 mm
Standover748mm755mm+7 mm
Seat tube length481mm481mm±0 mm
Fork length369mm363mm−6 mm
Head tube length137mm126mm−11 mm

Differences are the Specialized Tarmac SL6 minus the Specialized Aethos FACT 10r Carbon. Full charts: 2023 Specialized Aethos FACT 10r Carbon, 2022 Specialized Tarmac SL6.

Where each sits in its class

Specialized Aethos FACT 10r CarbonSpecialized Tarmac SL6

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.

PartSpecialized Aethos FACT 10r CarbonFACT 10r CarbonSpecialized Tarmac SL6Tarmac SL6 - Shimano Tiagra
FrameSpecialized Aethos FACTSpecialized Tarmac SL6
SeatpostRoval Alpinistnot listed
Shifternot listedShimano Tiagra
Derailleurnot listedShimano Tiagra
Chainnot listedKMC X10
Cranksetnot listedShimano Tiagra 4700
Wheelsetnot listedSpecialized Axis Sport
Tirenot listedSpecialized Turbo Pro
Brakenot listedShimano Tiagra BR-4770
Saddlenot listedSpecialized Power Sport

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