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2024 Specialized Tarmac SL8 FACT 12r Carbon vs 2024 Trek Émonda SLR H2

The Trek Émonda SLR H2 size closest to your 54 is the 54. Compare the 54 instead

What changes on the Trek Émonda SLR H2

Compared with the Specialized Tarmac SL8 FACT 12r Carbon in 54, the Trek Émonda SLR H2 in 58 places the top of the head tube 44 mm higher and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 14 mm longer, which can contribute to stability at speed.

Frame stack
+44 mm
Higher front end
Frame reach
+10 mm
Longer frame reach
Wheelbase
+14 mm
Longer: steadier at speed
Head angle
+0.8°
Steeper: sharper steering
Chainstays
+1 mm
About the same

The two frames

2024 Specialized Tarmac SL8 FACT 12r Carbon (54)The Specialized Tarmac SL8 FACT 12r Carbon frame drawn to scale.J 978

Only the Specialized Tarmac SL8 FACT 12r Carbon is drawn. The Trek Émonda SLR H2 numbers we have for size 58 are missing the seat angle.

Geometry side by side

MeasurementSpecialized Tarmac SL8 FACT 12r Carbon 54Trek Émonda SLR H2 58Difference
Reach381mm391+10 mm
Stack552mm596+44 mm
Head tube angle73°73.8°+0.8°
Seat tube angle74°not listed
Chainstay length410mm411+1 mm
Wheelbase978mm992+14 mm
BB drop72mm68−4 mm
BB height268mmnot listed
Standover768mm786+18 mm
Seat tube length473mm553+80 mm
Fork length370mmnot listed
Head tube length137mm190+53 mm
Effective top tubenot listed573

Differences are the Trek Émonda SLR H2 minus the Specialized Tarmac SL8 FACT 12r Carbon. Full charts: 2024 Specialized Tarmac SL8 FACT 12r Carbon, 2024 Trek Émonda SLR H2.

Where each sits in its class

Specialized Tarmac SL8 FACT 12r CarbonTrek Émonda SLR H2

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 Tarmac SL8 FACT 12r CarbonS-Works FACT 12r CarbonTrek Émonda SLR H2SLR H2
FrameSpecialized S-Works Tarmac SL8 FACTTrek Ultralight 700
Forknot listedTrek Emonda SLR
Headsetnot listedBontrager Expander Plug
Seatpostnot listedTrek Not

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A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet