Details
Every trail, every steep climb, every thrilling descent. Nothing is out of bounds with the Reign E+. Tested and developed by Giant's E-bike enduro pros, this proven trail ripper gives you the power to enjoy the best parts of the ride again and again.
Key Performance Factors:
- Trail technology
Proven Maestro rear suspension (160mm) and a powerful but compact SyncDrive Pro motor boost your capabilities on steep climbs and rugged descents. Progressive geometry with a shorter rear end and longer reach allow superior handling and agility.
- Total control
RideControl Ergo 3 offers integrated, user-friendly button controls that are easy to use. The Giant E-bike App gives you tuning options and E-bike-specific fitness tracking.
- Long-lasting power
Climb steep mountains and enjoy ripping descents all day long with the new downtube-integrated EnergyPak battery system featuring 800Wh of capacity.
Techs and Features:
- ALUXX SL Aluminum Technology
This High-Performance level, state-of-the-art aluminum material is made predominantly from 6011 alloy and delivers best-in-class strength-to-weight ratios. These framesets also feature unique welding technologies for high-performance ride quality.
- EnergyPak Plus
This range extender can boost total capacity by 250Wh. It has all the latest technologies combined with an up-to-date design that fits a select number of bikes. It has smart technology so it automatically turns on when your battery loses power, giving you peace of mind that you can reach your destination.
- RideControl Go
Available on premium Giant E-Bikes, RideControl Go features a multipurpose button integrated into the top tube. Colored LEDs allow you to switch power modes from the top tube and keep a clean handlebar setup. The lights also display battery level and support mode.
- RideControl Ergo 3
This updated control system features clean buttons that are integrated with the handlebar grips. You can install the three-button control on the left or right side, making it easy to switch power modes. You also have the option of adding a second control on the other side. Using the RideControl App, you can configure it to your own personal preferences.
- SyncDrive Pro
SyncDrive Pro powered by Yamaha is designed for high-performance E-bike riding. Giant tuned the motor to make it more powerful, producing a performance-oriented riding style. The lightweight, compact SyncDrive Pro motor is used primarily on Giant's high-performance models.

| FRAME SIZE | SMALL | MEDIUM | LARGE | X-LARGE |
|---|---|---|---|---|
| GEOMETRY POSITION | LOW | HIGH | LOW | HIGH | LOW | HIGH | LOW | HIGH |
| A - SEAT TUBE LENGTH (mm) | 400 | 425 | 450 | 475 |
| A1 - SEATPOSTINSERTIONDEPTH (mm) | 230 | 260 | 280 | 310 |
| B - SEAT TUBE ANGLE | 76.7° | 77.5° | 76.7° | 77.5° | 76.7° | 77.5° | 76.7° | 77.5° |
| C - TOP TUBE LENGTH (mm) | 569 | 568 | 595 | 594 | 622 | 621 | 649 | 648 |
| D - HEAD TUBE LENGTH (mm) | 100 | 100 | 110 | 120 |
| E - HEAD TUBE ANGLE | 63.7° | 64.5° | 63.7° | 64.5° | 63.7° | 64.5° | 63.7° | 64.5° |
| F - FORK RAKE (mm) | 44 | 44 | 44 | 44 |
| G - TRAIL (mm) | 135.5 | 132.1 | 135 | 132 | 135 | 132 | 135.5 | 132.1 |
| H - WHEELBASE (mm) | 1209 | 1210 | 1236 | 1237 | 1265 | 1266 | 1295 | 1296 |
| I - CHAIN STAY LENGTH (mm) | 457 | 455 | 454 | 454 | 454 | 454 | 454 | 454 |
| J - BOTTOM BRACKET DROP (mm) | 25 | 15 | 25 | 15 | 25 | 15 | 25 | 15 |
| K - STACK (mm) | 636 | 632 | 635 | 632 | 645 | 641 | 654 | 650 |
| L - REACH (mm) | 425 | 430 | 450 | 455 | 475 | 480 | 500 | 505 |
| M - STAND OVER HEIGHT (mm) | 785 | 789 | 772 | 776 | 771 | 775 | 768 | 772 |
| N - HANDLEBAR WIDTH (mm) | 800 | 800 | 800 | 800 |
| O - STEM LENGTH (mm) | 40 | 40 | 40 | 50 |
| P - CRANK LENGTH (mm) | 160 | 160 | 165 | 165 |
| Q - WHEEL SIZE | 29" | 29" | 29" | 29" |
Specs
| Frame | ALUXX SL-grade aluminum, Advanced Forged Composite Upper Rocker, 160mm Maestro suspension system, 'Boost' 148x12mm, Universal Derailleur Hanger |
|---|---|
| Fork | Fox 38 Float Factory GRIP 2 Air 170 matt black 1111-38FLOA-0024 |
| Rear Shock | Fox X2 Factory, EVOL Large Volume sleeve, 205x62.5mm Trunnion mount, custom tuned, recommended sag: 30% |
| Rims |
Front: E-TRA Hookless Tubeless ready Alloy 29, 30mm inner width Rear: E-TRA Hookless Tubeless ready Alloy 27.5, 30mm inner width |
| Hubs |
Front: E-TRA MTB Alloy Hub, 6 Bolt, 110x15 Rear: 148x12 Shimano HG Drive Body Pawl Driver (3 Pawl 30T) Thru-axle |
| Spokes |
Front: Sapim Race Rear: Sapim E-Lite, e-bike optimized |
| Tires |
Front: Maxxis Minion DHF 29x2.6"" foldable, Tubeless, EXO+, 3C MaxxTerra Rear: Maxxis High Roller II 27.5x2.5"" foldable, Tubeless, DoubleDown, 3C MaxxTerra Compound |
| Crankset | Praxis E- Crankset 36T steel chainring 160mm [S-M], 165mm [L-XL] |
| Shifters | Shimano XT LinkGllide |
| Front Derailleur | MRP HD2 co-moulded chain guide |
| Rear Derailleur | Shimano XT LinkGlide 11-speed, Shadow+ |
| Cassette/Freewheel | Shimano Cues LinkGlide, CS-LG400-11, 11-50T, 11-speed |
| Chain | Shimano LinkGlide, CN-LG500 |
| Brakes | Shimano XT, BR-8120, 4-piston, hydraulic disc, RT66, 220mm |
| Brake Levers | Shimano XT, I-spec EV |
| Handlebars | Giant Contact Trail, 35x800mm |
| Tape/Grips | Giant Tactal Pro-E, tapered design, 135mm Ø28~30mm (S/M) 142mm Ø29~32mm (L/XL) |
| Stem | Giant Contact SL 35 |
| Seatpost | Tranz-X Rad+ dropper, 30,9mm, 30mm travel adjustable (S:120-150mm, M:140-170mm, L/XL:170-200mm) |
| Saddle | Romero |
| Pedals | Flatpedal |
| Accessories & Extras |
Torx 25 Battery Lock with built-in Torque limiter Tubeless kit (liquid, valves, levers, manual, tool) |
| Motor | Giant SyncDrive Pro2 85Nm, PedalPlus 6-Sensor technology |
| Battery | Giant EnergyPak 800Wh, 22700 Lithium cell technology, Aluminium casing with highest safety standard (EN50604), CO2 Neutral production Giant EnergyPak Plus 250 range extender compatible (exculde S size) |
| Controller/Display |
Giant RideControl Ergo3, grip integrated remote Giant RideControl GO, frame integrated LED consoleOptional wireless ANT+ display |
| Charger | Giant EnergyPak 6A smart charger, 60% in 2:15h |
* Subject to change without notice.
