2025 Giant Reign Advanced Pro 29 vs 2026 Rocky Mountain Altitude Powerplay Alloy
The XL is the Rocky Mountain Altitude Powerplay Alloy size closest to your XL Giant Reign Advanced Pro 29. 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 Rocky Mountain Altitude Powerplay Alloy
Compared with the Giant Reign Advanced Pro 29 in XL, the Rocky Mountain Altitude Powerplay Alloy in XL places the top of the head tube 12 mm higher and 3 mm further back, relative to the bottom bracket. Its wheelbase is 12 mm longer, which can contribute to stability at speed.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- +12 mm
- Longer: steadier at speed
- Head angle
- −1.1°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Giant Reign Advanced Pro 29 is drawn. The Rocky Mountain Altitude Powerplay Alloy numbers we have for size XL are missing the chainstay length.
Geometry side by side
| Measurement | Giant Reign Advanced Pro 29 XL | Rocky Mountain Altitude Powerplay Alloy XL | Difference |
|---|---|---|---|
| Reach | 511 | 508 | −3 mm |
| Stack | 640 | 652 | +12 mm |
| Head tube angle | 64.6 | 63.5 | −1.1° |
| Seat tube angle | 76.4 | 75.5 | −0.9° |
| Chainstay length | 439 | not listed | |
| Wheelbase | 1289 | 1301 | +12 mm |
| Standover | 804 | 831 | +27 mm |
| Seat tube length | 496 | 480 | −16 mm |
| Head tube length | 120 | 125 | +5 mm |
| Effective top tube | not listed | 673 | |
| BB drop | not listed | 7 |
Differences are the Rocky Mountain Altitude Powerplay Alloy minus the Giant Reign Advanced Pro 29. Full charts: 2025 Giant Reign Advanced Pro 29, 2026 Rocky Mountain Altitude Powerplay Alloy.
Where each sits in its class
Giant Reign Advanced Pro 29Rocky Mountain Altitude Powerplay Alloy
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 | Giant Reign Advanced Pro 29Advanced Pro 29 1 | Rocky Mountain Altitude Powerplay AlloyAlloy 30 |
|---|---|---|
| Frame | Giant Reign | Rocky Mountain Altitude Powerplay |
| Fork | Fox 38 Factory | RockShox Domain RC Gold |
| Rear shock | Fox Float X2 Factory | Marzocchi Bomber Air |
| Shifter | SRAM GX Eagle AXS Rocker | Shimano Deore |
| Derailleur | SRAM GX Eagle | Shimano Deore XT Di2 |
| Cassette | SRAM GX Eagle | Shimano Deore XT |
| Chain | SRAM GX Eagle | Shimano Deore M6100 |
| Crankset | TruVativ Descendent | Race Face Ride Cinch |
| Bottom bracket | SRAM DUB GX | Race Face BSA 73 |
| Wheelset | Giant TRX 2 | not listed |
| Tire | Maxxis Assegai, Maxxis Minion DHR II DD | Maxxis Minion Assegai, Maxxis Minion DHR II |
| Brake | Shimano SLX M7120 | Tektro HD-M535 |
| Rotor | Shimano RT-66 | Shimano SM-RT64 |
| Handlebar | Giant Contact SLR | Rocky Mountain AM |
| Stem | Giant Contact SL | Rocky Mountain 35 AM |
| Grips | Giant Tactal Pro Single | ODI Elite Pro Lock-On |
| Dropper post | TranzX dropper internal routing | TranzX +RAD1.0 |
| Saddle | Giant Romero SL | WTB Volt |
| Motor | not listed | Rocky Mountain Dyname S4 |
| Hub | not listed | Shimano TC500 |
| Rim | not listed | Rocky Mountain TR30 |
| Headset | not listed | FSA ZS56/66 Reach Adjust |
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