2022 Specialized Demo Race vs 2021 Trek Session AL 27.5 Frameset

What changes on the Trek Session AL 27.5 Frameset

Compared with the Specialized Demo Race in S3, the Trek Session AL 27.5 Frameset in M places the top of the head tube 29 mm lower and 38 mm further back, relative to the bottom bracket. Its wheelbase is 54 mm shorter, which can contribute to quicker direction changes.

Frame stack

−29 mm

Lower front end

Frame reach

−38 mm

Shorter frame reach

Wheelbase

−54 mm

Shorter: quicker to change direction

Head angle

+1.4°

Steeper: sharper steering

Chainstays

−5 mm

Shorter: livelier

The two frames

Only the Specialized Demo Race is drawn. The Trek Session AL 27.5 Frameset numbers we have for size M are missing the seat angle.

Geometry side by side

Differences are the Trek Session AL 27.5 Frameset minus the Specialized Demo Race. Full charts: 2022 Specialized Demo Race, 2021 Trek Session AL 27.5 Frameset.

Where each sits in its class

Specialized Demo RaceTrek Session AL 27.5 Frameset

Each bike is ranked against the other downhill 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.