2017 Trek Émonda ALR Pro vs 2016 Specialized Roubaix SL4 Expert Disc UDi2

What changes on the Specialized Roubaix SL4 Expert Disc UDi2

Compared with the Trek Émonda ALR Pro in 56, the Specialized Roubaix SL4 Expert Disc UDi2 in 54.0 places the top of the head tube 13 mm lower and 7 mm further back, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.

Frame stack

−13 mm

Lower front end

Frame reach

−7 mm

Shorter frame reach

Wheelbase

+17 mm

Longer: steadier at speed

Head angle

−1.5°

Slacker: calmer steering

Chainstays

+5 mm

Longer: more planted

The two frames

We can't draw these frames yet. The Trek Émonda ALR Pro numbers we have for size 56 are missing the seat angle. The numbers below still compare.

Geometry side by side

Differences are the Specialized Roubaix SL4 Expert Disc UDi2 minus the Trek Émonda ALR Pro. Full charts: 2017 Trek Émonda ALR Pro, 2016 Specialized Roubaix SL4 Expert Disc UDi2.

Where each sits in its class

Trek Émonda ALR ProSpecialized Roubaix SL4 Expert Disc UDi2

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.