2026 Rocky Mountain Altitude Powerplay Alloy vs 2025 Giant Reign Advanced Pro 29
The M is the Giant Reign Advanced Pro 29 size closest to your M Rocky Mountain Altitude Powerplay Alloy. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
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 M places the top of the head tube 6 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 17 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- −17 mm
- Shorter: quicker to change direction
- 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
| Measurement | Rocky Mountain Altitude Powerplay Alloy M | Giant Reign Advanced Pro 29 M | Difference |
|---|---|---|---|
| Reach | 450 | 451 | +1 mm |
| Stack | 628 | 622 | −6 mm |
| Head tube angle | 63.5 | 64.6 | +1.1° |
| Seat tube angle | 75.5 | 76.4 | +0.9° |
| Effective top tube | 612 | not listed | |
| Wheelbase | 1237 | 1220 | −17 mm |
| BB drop | 7 | not listed | |
| Standover | 832 | 759 | −73 mm |
| Seat tube length | 420 | 431 | +11 mm |
| Head tube length | 100 | 100 | ±0 mm |
| Chainstay length | not listed | 439 |
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.
| Part | Rocky Mountain Altitude Powerplay AlloyAlloy 30 | Giant Reign Advanced Pro 29Advanced Pro 29 1 |
|---|---|---|
| Frame | Rocky Mountain Altitude Powerplay | Giant Reign |
| Fork | RockShox Domain RC Gold | Fox 38 Factory |
| Rear shock | Marzocchi Bomber Air | Fox Float X2 Factory |
| Shifter | Shimano Deore | SRAM GX Eagle AXS Rocker |
| Derailleur | Shimano Deore XT Di2 | SRAM GX Eagle |
| Cassette | Shimano Deore XT | SRAM GX Eagle |
| Chain | Shimano Deore M6100 | SRAM GX Eagle |
| Crankset | Race Face Ride Cinch | TruVativ Descendent |
| Bottom bracket | Race Face BSA 73 | SRAM DUB GX |
| Motor | Rocky Mountain Dyname S4 | not listed |
| Tire | Maxxis Minion Assegai, Maxxis Minion DHR II | Maxxis Assegai, Maxxis Minion DHR II DD |
| Hub | Shimano TC500 | not listed |
| Rim | Rocky Mountain TR30 | not listed |
| Brake | Tektro HD-M535 | Shimano SLX M7120 |
| Rotor | Shimano SM-RT64 | Shimano RT-66 |
| Handlebar | Rocky Mountain AM | Giant Contact SLR |
| Stem | Rocky Mountain 35 AM | Giant Contact SL |
| Grips | ODI Elite Pro Lock-On | Giant Tactal Pro Single |
| Headset | FSA ZS56/66 Reach Adjust | not listed |
| Dropper post | TranzX +RAD1.0 | TranzX dropper internal routing |
| Saddle | WTB Volt | Giant Romero SL |
| Wheelset | not listed | Giant TRX 2 |
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