2026
Giant Reign SE
Big hits and all-out descents. This trail-crushing enduro machine features a unique paint treatment that makes each bike one of a kind. Its mixed wheel size, with a 29-inch front and 27.5-inch rear, blends stability and speed with agility that pops. The geometry is designed for a longer-travel 165mm rear suspension setup and a 180mm fork, giving you the upper hand on the on the rowdiest trails and bike park terrain.
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Highlights
RACE-BRED SUSPENSION
The Maestro rear suspension eats up enduro terrain with 165mm of smooth, active rear travel matched with a 180mm travel fork. The trunnion mount rear shock has a longer stroke while the Advanced Forged Composite upper rocker arm adds stiffness and lowers overall frame weight.
ADJUSTABLE ENDURO GEOMETRY
A flip chip feature lets you adjust frame geometry depending on the terrain. You can select a 62.6 or 63-degree head angle and corresponding 77.4 or 77.8-degree seat tube angle, resulting in a 20 or 15mm bottom bracket drop (size medium) to fine-tune handling for varying trail conditions and riding style.
MIXED WHEEL SIZE
A 29-inch front wheel provides speed, stability and front-end control on rough, technical trails. A 27.5-inch rear wheel adds agility and maneuverability to help riders rail corners, pop over features and show off their style.
Technologies
Sizing guide
| Size | cm feet |
|---|---|
| M |
171 - 180
5’7” - 5’11”
|
| L |
179 - 188
5’10” - 6’2”
|
| XL |
187 - 198
6’2” - 6’6”
|
Geometry
| M | L | XL | |
|---|---|---|---|
| Seat Tube Length | M425 | L450 | XL475 |
| Seat Tube Angle | M77.4° | 77.8° | L76.4° | 76.8° | XL76.4° | 76.8° |
| Top Tube Length | M589 | 588 | L623 | 622 | XL655 | 654 |
| Head Tube Length | M105 | L105 | XL120 |
| Head Tube Angle | M62.6° | 63.0° | L62.6° | 63.0° | XL62.6° | 63.0° |
| Fork Rake (mm) | M44 | L44 | XL44 |
| Trail | M147 | 145 | L147 | 145 | XL147 | 144 |
| Wheelbase | M1251 | 1250 | L1275 | 1274 | XL1308 | 1307 |
| Chain Stay Length | M443 | 442 | L443 | 442 | XL443 | 442 |
| Bottom Bracket Drop | M20 | 15 | L20 | 15 | XL21 | 15 |
| Stack | M639 | 636 | L648 | 645 | XL653 | 650 |
| Reach | M446 | 450 | L466 | 470 | XL497 | 501 |
| Stand Over Height | M734 | 739 | L750 | 755 | XL744 | 749 |
| Stem Length | M40 | L40 | XL40 |
| Crank Length | M165 | L165 | XL165 |
| Wheel Size | M29" [F] 27.5" [R] | L29" [F] 27.5" [R] | XL29" [F] 27.5" [R] |
Technical specifications
| Size | M, L, XL |
| Colours | Black Lightning/Chrome |
| Frame | ALUXX SL-grade aluminium front and rear triangles, 165mm Maestro suspension, flip chip, 12x148mm thru-axle, 27.5 or 29-inch rear wheel compatible, flip chip - Maestro 3, integrated down tube storage |
| Fork | RockShox Zeb Ultimate, Charger 3.1 RC2 damper, 180mm, 15x110, Maxle Stealth, Debonair |
| Shock | RockShox Vivid Ultimate, RCT2, adjustable hydraulic bottom out, trunnion mount, 205/65 S:425#, M:425#, L:450#, XL: 475# |
| Handlebar | Giant Contact TR35, 35mm rise |
| Grips | Giant Tactal Pro Single |
| Stem | Giant Contact SL 35 S:40mm, M:40mm, L:40mm, XL:40mm |
| Seatpost | Contact Switch AT dropper, remote S: 110-140mm travel / 30.9 x 395mm |
| Saddle | Giant Romero |
| Shifters | SRAM Eagle 90, mechanical, 1x12 |
| Rear Derailleur | SRAM Eagle 90 mechanical transmission |
| Brakes | SRAM Maven, hydraulic, SRAM HS2 rotors [F]220mm, [R]200mm |
| Brake Levers | SRAM Maven |
| Cassette | SRAM XS 1270, 10x52 |
| Chain | SRAM 70 |
| Crankset | SRAM 90, 32t, 55mm chainline S:165mm, M:165mm, L:165mm, XL:165mm |
| Bottom Bracket | SRAM DUB, press fit |
| Rims | Giant TRA WheelSystem, 6069 alloy, hookless, 30mm inner width, 40mm outer width, 21mm height, Wide Guard Technology |
| Hubs | [F] Giant MTB alloy, 6-bolt, [R] Giant MTB alloy, 72 POE (Points of Engagement), 6-bolt, MicroSpline driver body |
| Spokes | Sapim, 28, straight pull, DBL Technology |
| Tires | [F] Maxxis Assegai 29x2.5 WT, 3C MaxxGrip, EXO+, TR [R] Maxxis Minion DHR II 27.5x2.4 WT, 3C MaxxGrip, DD, TR tubeless |
| Extras | Tubeless prepared, 2.5" max tire size, 36t max chainring size, MRP AMG CS chain guide |
| Weight | The 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. |
