2026 Transition Spire Carbon vs 2025 Giant Reign Advanced
The M is the Giant Reign Advanced size closest to your L Transition Spire Carbon. 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
Compared with the Transition Spire Carbon in L, the Giant Reign Advanced in M places the top of the head tube 5 mm higher and 24 mm further back, relative to the bottom bracket. Its wheelbase is 43 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +5 mm
- Higher front end
- Frame reach
- −24 mm
- Shorter frame reach
- Wheelbase
- −43 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Transition Spire Carbon, LGiant Reign Advanced, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Transition Spire Carbon L | Giant Reign Advanced M | Difference |
|---|---|---|---|
| Reach | 480 | 456 | −24 mm |
| Stack | 633 | 638 | +5 mm |
| Head tube angle | 62.5 | 63.5° | +1.0° |
| Seat tube angle | 77.6 | 78.3° | +0.7° |
| Effective top tube | 608 | 589 | −19 mm |
| Chainstay length | 448 | 445 | −3 mm |
| Wheelbase | 1289 | 1246 | −43 mm |
| BB drop | 32 | 35 | +3 mm |
| BB height | 343 | not listed | |
| Seat tube length | 430 | 425 | −5 mm |
| Head tube length | 110 | 105 | −5 mm |
| Standover | not listed | 735 |
Differences are the Giant Reign Advanced minus the Transition Spire Carbon. Full charts: 2026 Transition Spire Carbon, 2025 Giant Reign Advanced.
Where each sits in its class
Transition Spire CarbonGiant Reign Advanced
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 | Transition Spire CarbonCarbon Eagle 90 | Giant Reign AdvancedAdvanced |
|---|---|---|
| Frame | Transition Spire | Giant Advanced-Grade |
| Fork | RockShox Zeb Ultimate Charger 3 RC2 | not listed |
| Rear shock | RockShox Vivid Ultimate | Fox Float DHX2 2 Factory |
| Shifter | SRAM Eagle AXS | not listed |
| Derailleur | SRAM Eagle 90 Transmission | not listed |
| Cassette | SRAM GX Eagle Transmission | not listed |
| Chain | SRAM GX Eagle Transmission | not listed |
| Crankset | SRAM Eagle 90 Transmission | not listed |
| Chainring | SRAM Eagle AXS | not listed |
| Wheelset | DT Swiss EX1700 SPLINE 30 | not listed |
| Tire | Schwalbe Magic Mary Radial, Schwalbe Albert Radial | not listed |
| Brake | SRAM Maven Silver Stealth | not listed |
| Rotor | SRAM CenterLine | not listed |
| Handlebar | Burgtec Ride Wide Alloy Enduro | not listed |
| Stem | Burgtec Enduro MK3 35 | not listed |
| Grips | ODI Longneck V2.1 | not listed |
| Headset | FSA NO.55R/57 | not listed |
| Dropper post | OneUp Components dropper post | not listed |
| Saddle | SDG Bel Air 3 | not listed |
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