2014 Specialized Demo I vs 2015 Trek Session 9.8 Park 26

What changes on the Trek Session 9.8 Park 26

Compared with the Specialized Demo I in S, the Trek Session 9.8 Park 26 in L places the top of the head tube 4 mm lower and 13 mm further forward, relative to the bottom bracket. Its wheelbase is 9 mm longer, which can contribute to stability at speed.

Frame stack

−4 mm

Lower front end

Frame reach

+13 mm

Longer frame reach

Wheelbase

+9 mm

Longer: steadier at speed

Head angle

+0.2°

About the same head angle

Chainstays

−3 mm

Shorter: livelier

The two frames

Only the Specialized Demo I is drawn. The Trek Session 9.8 Park 26 numbers we have for size L are missing the seat angle.

Geometry side by side

Differences are the Trek Session 9.8 Park 26 minus the Specialized Demo I. Full charts: 2014 Specialized Demo I, 2015 Trek Session 9.8 Park 26.

Where each sits in its class

Specialized Demo ITrek Session 9.8 Park 26

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.