| Size | Height Range | |
| XX-Small | 5'0"-5'2" | |
| X-Small | 5'2"-5'4" | |
| Small | 5'4" to 5'8" | |
| Medium | 5'7" to 5'11" | |
| Large | 5'10" to 6'2" | |
| X-Large | 6'2" to 6'6" |
Shop all Giant Full-Suspension
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.
Race-bred suspension
A Maestro rear suspension system with 160mm of travel, paired with a 170mm fork, was developed and tested under the extreme conditions of Enduro World Series races. The trunnion mount shock has a longer stroke (62.5mm compared to 60mm on the previous generation). And the Advanced Forged Composite upper rocker arm adds stiffness and lowers overall weight.
Adjustable enduro geometry
Flip chip technology lets you switch between three settings depending on the terrain. You can select a 62.47, 63.09 or 63.46- degree head angle and corresponding 77.54, 77.89 or 78.26-degree seat tube angle, resulting in a 29, 24 or 19mm bottom bracket drop (size medium) to fine- tune handling for trail conditions, riding style and rear-wheel size.
Rear wheel options
Riders can choose either the stock 27.5-inch rear wheel or switch to 29. The larger 29-inch option improves stability and roll-over capabilities, while 27.5 delivers a more agile, snappier feel. It’s a quick and easy way to adjust the bike’s handling and feel.
Giant
Reign Advanced 2 (2025)
$4,499.99
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Your Price: $4,249.99
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Low stock (3 left)
SKU: 1077004105
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.
Race-bred suspension
A Maestro rear suspension system with 160mm of travel, paired with a 170mm fork, was developed and tested under the extreme conditions of Enduro World Series races. The trunnion mount shock has a longer stroke (62.5mm compared to 60mm on the previous generation). And the Advanced Forged Composite upper rocker arm adds stiffness and lowers overall weight.
Adjustable enduro geometry
Flip chip technology lets you switch between three settings depending on the terrain. You can select a 62.47, 63.09 or 63.46- degree head angle and corresponding 77.54, 77.89 or 78.26-degree seat tube angle, resulting in a 29, 24 or 19mm bottom bracket drop (size medium) to fine- tune handling for trail conditions, riding style and rear-wheel size.
Rear wheel options
Riders can choose either the stock 27.5-inch rear wheel or switch to 29. The larger 29-inch option improves stability and roll-over capabilities, while 27.5 delivers a more agile, snappier feel. It’s a quick and easy way to adjust the bike’s handling and feel.
SPECIFICATIONS
GEOMETRY
| S | M | L | XL | ||
| LOW | MID | HIGH | LOW | MID | HIGH | LOW | MID | HIGH | LOW | MID | HIGH | ||
| A | Seat Tube Length (MM) | 400 | 425 | 450 | 475 |
| 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 (MM) | 558 | 557 | 556 | 589 | 588 | 587 | 622 | 621 | 621 | 654 | 653 | 653 |
| D | Head Tube Length (MM) | 100 | 105 | 115 | 120 |
| 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 (MM) | 44 | 44 | 44 | 44 |
| G | Trail (MM) | 147.0 | 144.0 | 141.0 | 147.0 | 144.0 | 141.0 | 147.0 | 144.0 | 141.0 | 147.0 | 144.0 | 141.0 |
| H | Wheelbase (MM) | 1214 | 1213 | 1212 | 1246 | 1245 | 1244 | 1271 | 1270 | 1269 | 1304 | 1303 | 1302 |
| I | Chain Stay Length (MM) | 445 | 443 | 442 | 445 | 443 | 442 | 445 | 443 | 442 | 445 | 443 | 442 |
| J | Bottom Bracket Drop (MM) | 29 | 24 | 19 | 29 | 24 | 19 | 29 | 24 | 19 | 29 | 24 | 19 |
| K | Stack (MM) | 633 | 630 | 627 | 638 | 635 | 632 | 647 | 644 | 641 | 652 | 649 | 646 |
| L | Reach (MM) | 418 | 421 | 426 | 448 | 452 | 456 | 468 | 471 | 476 | 499 | 503 | 507 |
| M | Stand Over Height (MM) | 714 | 718 | 723 | 733 | 738 | 742 | 746 | 750 | 755 | 762 | 766 | 771 |
| N | Handlebar Width (MM) | 800 | 800 | 800 | 800 |
| O | Stem Length (MM) | 40 | 40 | 40 | 40 |
| P | Crank Length (MM) | 165 | 170 | 170 | 170 |
| Q | Wheel Size | 29" [F] 27.5" [R] | 29" [F] 27.5" [R] | 29" [F] 27.5" [R] | 29" [F] 27.5" [R] |
FEATURES
Key Technologies
Advanced Forged Composite Technology
A state-of-the-art high-pressure molding process is used to produce complex-shaped carbon fiber components that are lighter, stiffer and stronger than similar components made from aluminum. This technology is used in critical performance parts such as Maestro Suspension rocker links.
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Overdrive
Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4” lower and 1 1/8” upper for road, 1 1/2” lower and 1 1/8” upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.
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Maestro Suspension Technology
Four strategically positioned pivot points and two linkages all work together to create a single floating pivot for the most active, efficient and independent suspension system on the trail.
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Tubeless System
Whether you’re cornering in a crit, climbing technical singletrack or cruising through the city, you'll be free to ride without worrying about your bike's tires on your next adventure.
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