2025 Trek Roscoe Gen 4 vs 2026 State Bicycle Co 4130 Trail

What changes on the State Bicycle Co 4130 Trail

Compared with the Trek Roscoe Gen 4 in ML, the State Bicycle Co 4130 Trail in S/M places the top of the head tube 11 mm lower and 10 mm further back, relative to the bottom bracket. Its wheelbase is 15 mm shorter, which can contribute to quicker direction changes.

Frame stack

−11 mm

Lower front end

Frame reach

−10 mm

Shorter frame reach

Wheelbase

−16 mm

Shorter: quicker to change direction

Head angle

±0.0°

About the same head angle

Chainstays

n/a

One of the bikes has no number for this

The two frames

Only the Trek Roscoe Gen 4 is drawn. The State Bicycle Co 4130 Trail numbers we have for size S/M are missing the chainstay length.

Geometry side by side

Differences are the State Bicycle Co 4130 Trail minus the Trek Roscoe Gen 4. Full charts: 2025 Trek Roscoe Gen 4, 2026 State Bicycle Co 4130 Trail.

Where each sits in its class

Trek Roscoe Gen 4State Bicycle Co 4130 Trail

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.