2025 Giant Reign Advanced 1
$3,700.00
Go fast, get rowdy and nail new lines. With a full-composite chassis, developed with Giant’s enduro racing pros, this hard-charging 29/27.5’er has 160mm of Maestro rear suspension, adjustable geometry, and the option to switch to a 29-inch rear wheel.
Key Performance Features
Race-Tested Suspension
The bike features a Maestro rear suspension system with 160mm of travel, paired with a 170mm front fork, delivering exceptional control and stability on demanding trails. This suspension setup was developed and tested under the extreme conditions of Enduro World Series racing, ensuring top-level performance for aggressive riders.
The trunnion-mounted rear shock uses a longer 62.5mm stroke, increasing suspension efficiency compared to the previous generation. In addition, the Advanced Forged Composite upper rocker arm improves frame stiffness while reducing overall weight, helping riders maintain precise handling on technical terrain.
Adjustable Enduro Geometry
Built-in flip chip technology allows riders to easily adjust the bike’s geometry depending on trail conditions and personal riding preferences.
Three adjustable settings provide different head tube and seat tube angles:
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62.47° head angle / 77.54° seat tube angle
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63.09° head angle / 77.89° seat tube angle
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63.46° head angle / 78.26° seat tube angle
These adjustments also change the bottom bracket drop (29mm, 24mm, or 19mm on a medium frame), allowing riders to fine-tune the bike’s stability, responsiveness, and climbing efficiency based on terrain and riding style.
Rear Wheel Options
This bike offers flexible rear wheel compatibility, allowing riders to choose between 27.5-inch or 29-inch rear wheels.
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29-inch rear wheel: Provides increased stability and improved rollover performance on rough terrain.
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27.5-inch rear wheel: Offers quicker handling and a more playful, responsive feel.
Switching between wheel sizes is simple and allows riders to easily customize the bike’s ride characteristics to suit different trails and riding preferences.
| Seat Tube Length (inch) | 15.7 | 16.7 | 17.7 | 18.7 |
| A1 Seat Post Insertion Depth (inch) | 10.3 | 11.3 | 12.3 | 13.3 |
| B Seat Tube Angle | 77.5° | 77.8° | 78.2° | 77.5° | 77.8° | 78.2° | 76.5° | 76.9° | 77.2° | 76.5° | 76.9° | 77.2° |
| C Top Tube Length (inch) | 22 | 21.9 | 21.9 | 23.2 | 23.1 | 23.1 | 24.5 | 24.4 | 24.4 | 25.7 | 25.7 | 25.7 |
| D Head Tube Length (inch) | 3.9 | 4.1 | 4.5 | 4.7 |
| E Head Tube Angle | 62.7° | 63.0° | 63.4° | 62.7° | 63.0° | 63.4° | 62.7° | 63.1° | 63.4° | 62.7° | 63.1° | 63.4° |
| F Fork Rake (inch) | 1.7 | 1.7 | 1.7 | 1.7 |
| G Trail (inch) | 5.8 | 5.7 | 5.6 | 5.8 | 5.7 | 5.6 | 5.8 | 5.7 | 5.6 | 5.8 | 5.7 | 5.6 |
| H Wheelbase (inch) | 47.8 | 47.8 | 47.7 | 49.1 | 49 | 49 | 50 | 50 | 50 | 51.3 | 51.3 | 51.3 |
| I Chain Stay Length (inch) | 17.5 | 17.4 | 17.4 | 17.5 | 17.4 | 17.4 | 17.5 | 17.4 | 17.4 | 17.5 | 17.4 | 17.4 |
| J Bottom Bracket Drop (inch) | 1.1 | 0.9 | 0.7 | 1.1 | 0.9 | 0.7 | 1.1 | 0.9 | 0.7 | 1.1 | 0.9 | 0.7 |
| K Stack (inch) | 24.9 | 24.8 | 24.7 | 25.1 | 25 | 24.9 | 25.5 | 25.4 | 25.2 | 25.7 | 25.6 | 25.4 |
| L Reach (inch) | 16.5 | 16.6 | 16.8 | 17.6 | 17.8 | 18 | 18.4 | 18.5 | 18.7 | 19.6 | 19.8 | 20 |
| M Stand Over Height (inch) | 28.1 | 28.3 | 28.5 | 28.9 | 29.1 | 29.2 | 29.4 | 29.5 | 29.7 | 30 | 30.2 | 30.4 |
| N Handlebar Width (inch) | 31.5 | 31.5 | 31.5 | 31.5 |
| O Stem Length (inch) | 1.6 | 1.6 | 1.6 | 1.6 |
| P Crank Length (inch) | 6.5 | 6.7 | 6.7 | 6.7 |
| Q Wheel Size | 29″ [F] 27.5″ [R] | 29″ [F] 27.5″ [R] | 29″ [F] 27.5″ [R] | 29″ [F] 27.5″ [R] |
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SizesS, M, L, XL
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ColorsMercury/Raw Carbon
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FrameAdvanced-grade composite front and rear triangles, 160mm Maestro suspension, flip chip, 12x148mm thru-axle, 27.5 or 29-inch rear wheel compatible, flip chip – Maestro 3, integrated down tube storage
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ForkFox 38 Factory, 170mm, GRIP X2 damper, 15×110 Kabolt X, 44mm offset
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ShockFox Float X2 Factory, 205/62.5, custom tuned for Giant
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HandlebarGiant Contact TR35, 800x35mm, 35mm rise
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GripsGiant Tactal Pro Single
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StemGiant Contact SL 35 S:40mm, M:40mm, L:40mm, XL:40mm
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SeatpostContact Switch AT dropper, remote S: 110-140mm travel / 30.9 x 395mm
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SaddleGiant Romero SL
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ShiftersSRAM AXS Pod, discrete clamp, 1×12
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Front DerailleurN/A
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Rear DerailleurSRAM GX Eagle Transmission
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BrakesTRP EVO DH-R, hydraulic, TRP rotors [F]220mm, [R]200mm
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Brake LeversTRP DH-R EVO, hydraulic
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CassetteSRAM GX Eagle Transmission, 10×52
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ChainSRAM GX Eagle Transmission
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CranksetSRAM GX Eagle Transmission, DUB, 32t, 55mm chainline S:165mm, M:170mm, L:170mm, XL:170mm
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Bottom BracketSRAM DUB, press fit
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RimsGiant TRX WheelSystem, carbon, hookless, 30mm inner width, 40mm outer width, 22mm height, Wide Guard Technology
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Hubs[F] Giant MTB alloy, six-bolt, [R] Giant MTB alloy, 72 POE (Points of Engagement), six-bolt, XD driver body
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SpokesSapim, 28, straight pull, DBL Technology
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Tires[F] Maxxis Assegai 29×2.5 WT, 3C MaxxTerra, EXO+, TR [R] Maxxis Minion DHR II 27.5×2.4 WT, 3C MaxxTerra, DD, TR tubeless
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Extrastubeless prepared, 2.5″ max tire size, 36t max chainring size, MRP AMG CS chain guide, 3M tailgate protector
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WeightThe most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.
| Frame Size |
S ,M ,L ,XL |
|---|
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