2026 Transition Sentinel Alloy vs 2026 Revel Rascal Frame Kit

What changes on the Revel Rascal Frame Kit

Compared with the Transition Sentinel Alloy in M, the Revel Rascal Frame Kit in XL places the top of the head tube 18 mm higher and 42 mm further forward, relative to the bottom bracket. Its wheelbase is 24 mm longer, which can contribute to stability at speed.

Frame stack

+18 mm

Higher front end

Frame reach

+42 mm

Longer frame reach

Wheelbase

+24 mm

Longer: steadier at speed

Head angle

+0.8°

Steeper: sharper steering

Chainstays

−6 mm

Shorter: livelier

The two frames

Only the Transition Sentinel Alloy is drawn. The Revel Rascal Frame Kit numbers we have for size XL are missing the seat angle.

Geometry side by side

Differences are the Revel Rascal Frame Kit minus the Transition Sentinel Alloy. Full charts: 2026 Transition Sentinel Alloy, 2026 Revel Rascal Frame Kit.

Where each sits in its class

Transition Sentinel AlloyRevel Rascal Frame Kit

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.