2018 Specialized Stumpjumper 27.5 Frameset vs 2020 Specialized Fuse M4

What changes on the Specialized Fuse M4

Compared with the Specialized Stumpjumper 27.5 Frameset in M, the Specialized Fuse M4 in M places the top of the head tube 26 mm higher and 26 mm further forward, relative to the bottom bracket. Its wheelbase is 36 mm longer, which can contribute to stability at speed.

Frame stack

+26 mm

Higher front end

Frame reach

+26 mm

Longer frame reach

Wheelbase

+36 mm

Longer: steadier at speed

Head angle

−0.5°

Slacker: calmer steering

Chainstays

n/a

One of the bikes has no number for this

The two frames

Only the Specialized Stumpjumper 27.5 Frameset is drawn. The Specialized Fuse M4 numbers we have for size M are missing the chainstay length.

Geometry side by side

Differences are the Specialized Fuse M4 minus the Specialized Stumpjumper 27.5 Frameset. Full charts: 2018 Specialized Stumpjumper 27.5 Frameset, 2020 Specialized Fuse M4.

Where each sits in its class

Specialized Stumpjumper 27.5 FramesetSpecialized Fuse M4

Each bike is ranked against the other trail 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.