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.
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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; tire 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
Techs & Features
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.
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.
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.
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 a high-performance ride quality.
Tubeless System
Fewer flat tires. Greater traction. Less rolling resistance and a smoother, faster ride. Giant’s Tubeless System makes it easier than ever to experience all these benefits.
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.
Sizing Guide and Geometry
Sizing to be used as a reference only. Please check with a local authorized dealer to determine the correct size.
Available sizes may vary from country to country.
- S
- 163 cm5’4”
174 cm5’9”
- M
- 171 cm5’7” 182 cm6’0”
- L
- 179 cm5’10” 190 cm6’3”
- XL
- 187 cm6’2” 198 cm6’6”
| S | M | L | XL | ||
|---|---|---|---|---|---|
| LOW | HIGH | LOW | HIGH | LOW | HIGH | LOW | HIGH | ||
| A | Seat Tube Length (mm) (inch) | 40015.7 | 42516.7 | 45017.7 | 47518.7 |
| A1 | Seat Post Insertion Depth (mm) (inch) | 2309.1 | 26010.2 | 28011 | 31012.2 |
| B | Seat Tube Angle (degrees) | 76.7° | 77.5° | 76.7° | 77.5° | 76.7° | 77.5° | 76.7° | 77.5° |
| C | Top Tube Length (mm) (inch) | 56922.4 | 56822.4 | 59523.4 | 59423.4 | 62224.5 | 62124.4 | 64925.6 | 64825.5 |
| D | Head Tube Length (mm) (inch) | 1003.9 | 1003.9 | 1104.3 | 1204.7 |
| E | Head Tube Angle (degrees) | 63.7° | 64.5° | 63.7° | 64.5° | 63.7° | 64.5° | 63.7° | 64.5° |
| F | Fork Rake (mm) (inch) | 441.7 | 441.7 | 441.7 | 441.7 |
| G | Trail (mm) (inch) | 135.55.3 | 132.15.2 | 1355.3 | 1325.2 | 1355.3 | 1325.2 | 135.55.3 | 132.15.2 |
| H | Wheelbase (mm) (inch) | 120947.6 | 121047.6 | 123648.7 | 123748.7 | 126549.8 | 126649.8 | 129551 | 129651 |
| I | Chain Stay Length (mm) (inch) | 45718 | 45517.9 | 45417.9 | 45417.9 | 45417.9 | 45417.9 | 45417.9 | 45417.9 |
| J | Bottom Bracket Drop (mm) (inch) | 251 | 150.6 | 251 | 150.6 | 251 | 150.6 | 251 | 150.6 |
| K | Stack (mm) (inch) | 63625 | 63224.9 | 63525 | 63224.9 | 64525.4 | 64125.2 | 65425.7 | 65025.6 |
| L | Reach (mm) (inch) | 42516.7 | 43016.9 | 45017.7 | 45517.9 | 47518.7 | 48018.9 | 50019.7 | 50519.9 |
| M | Stand Over Height (mm) (inch) | 78530.9 | 78931.1 | 77230.4 | 77630.6 | 77130.4 | 77530.5 | 76830.2 | 77230.4 |
| N | Handlebar Width (mm) (inch) | 80031.5 | 80031.5 | 80031.5 | 80031.5 |
| O | Stem Length (mm) (inch) | 401.6 | 401.6 | 401.6 | 502 |
| P | Crank Length (mm) (inch) | 1606.3 | 1606.3 | 1656.5 | 1656.5 |
| Q | Wheel Size | 29" | [F] 29" [R | [F] 29" [R | [F] 29" [R |
All prices and specifications are subject to change without notice.