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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 on technical terrain.
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.
Range
How far can I expect to ride on a single battery charge?
The range for a single battery charge can vary greatly depending on conditions such as the combined weight of the rider and cargo; wind resistance; tyre pressure and tread profile; terrain and elevation changes; road or trail surface; outdoor temperature; maintenance of the E-Bike; and the condition of the battery.
The bar below gives an approximate range. Conditions are categorized as extreme, good and ideal. Extreme conditions typically occur when riding with a heavy load, strong headwinds or excessive climbs.
Energypak 800 / SyncDrive Pro 2
- Range
- Extreme: 43 miles/70 km
- Good: 86 miles/140 km
- Ideal: 155 miles/250 km
Techs & Features
ALUXX SL Aluminium Technology
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.
Flip Chip - Maestro 3
This all-new technology allows riders to quickly adjust the geometry and choose a rear wheel size (29-inch or 27.5-inch) for their riding style and terrain. It’s available on select Maestro-equipped mountain bikes. The adjustment affects head tube and seat tube angles, bottom bracket height, and rear-wheel size using eccentric flip chip hardware located on the upper rocker arm of the rear suspension.
| Motor |
Giant SyncDrive Pro2 85Nm, PedalPlus 6-Sensor technology
|
|---|---|
| Controller | Giant RideControl Ergo3, grip integrated remote |
| Display | Giant RideControl GO, frame integrated LED consoleOptional wireless ANT+ display |
| 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) |
| Charger | Giant EnergyPak 6A smart charger, 60% in 2:15h |
| Connectivity | Giant RideControl App enabled ANT+ wireless display signal with e-bike profile |
| Sizes | S, M, L, XL |
| Colours | Gloss Blue Dragonfly/Black |
| Frame | ALUXX SL-grade aluminium, Advanced Forged Composite Upper Rocker, 160mm Maestro suspension system, Boost 148x12mm, Universal Derailleur Hanger |
| Fork | Fox 38 Factory E-Tuned, 29er, 170mm travel, 44mm offset, Grip2 VVC damper Kabolt-X 110 |
| Shock | Fox X2 Factory, EVOL Large Volume sleeve, 205x62.5mm Trunnion mount, custom tuned, recommended sag: 30% |
| Handlebar | Giant Contact Trail, 35x800mm |
| 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 | Giant Romero Trail |
| Pedals | Flat pedal |
| Shifters | Shimano XT LinkGllide 1x11 |
| Front Derailleur | MRP HD2 co-moulded chain guide |
| Rear Derailleur | Shimano XT LinkGlide |
| Brakes |
Shimano XT, BR-8120, 4-piston, hydraulic disc, RT66, 220mm
|
| Brake Levers | Shimano XT, I-spec EV |
| Cassette | Shimano Cues LinkGlide, CS-LG400-11, 11-50T, 11-speed |
| Chain | Shimano LinkGlide, CN-LG500 |
| Crankset | Praxis N.W. 36T Cold Forged 4130 premium steel Praxis e-HD forged crankarm set (S/M:160mm, L/XL:165mm) |
| Bottom Bracket | N/A |
| Rims |
E-TRA Hookless Tubeless ready Alloy 29 [F] / 27.5 [R], 30mm inner width
|
| Hubs |
E-TRA MTB Alloy Hub, 6 Bolt, 110x15 [F] / 148x12 Shimano HG Drive Body Pawl Driver (3 Pawl 30T) Thru-axle [R]
|
| Spokes |
Sapim E-Lite [R] Race [F], e-bike optimised
|
| Tyres | Maxxis Minion DHF 29x2.6"" foldable, Tubeless, EXO+, 3C MaxxTerra[F] Maxxis High Roller II 27.5x2.5"" foldable, Tubeless, DoubleDown, 3C MaxxTerra Compound [R] |
| Extras |
Tubeless kit (liquid valves levers manual tool) Inner tube supplied
|
| Lock |
Torx 25 Battery Lock with built-in Torque limiter
|
| 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. |
