2026 Rocky Mountain Altitude Powerplay Alloy vs 2025 Giant Reign Advanced Pro 29

What changes on the Giant Reign Advanced Pro 29

Compared with the Rocky Mountain Altitude Powerplay Alloy in M, the Giant Reign Advanced Pro 29 in XL places the top of the head tube 12 mm higher and 61 mm further forward, relative to the bottom bracket. Its wheelbase is 52 mm longer, which can contribute to stability at speed.

Frame stack

+12 mm

Higher front end

Frame reach

+61 mm

Longer frame reach

Wheelbase

+52 mm

Longer: steadier at speed

Head angle

+1.1°

Steeper: sharper steering

Chainstays

n/a

One of the bikes has no number for this

The two frames

We can't draw these frames yet. The Rocky Mountain Altitude Powerplay Alloy numbers we have for size M are missing the chainstay length. The numbers below still compare.

Geometry side by side

Differences are the Giant Reign Advanced Pro 29 minus the Rocky Mountain Altitude Powerplay Alloy. Full charts: 2026 Rocky Mountain Altitude Powerplay Alloy, 2025 Giant Reign Advanced Pro 29.

Where each sits in its class

Rocky Mountain Altitude Powerplay AlloyGiant Reign Advanced Pro 29

Each bike is ranked against the other enduro 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.