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Fathom E+ EX
This versatile new E-bike combines the flat handlebar control and front suspension of a mountain bike with the built-in utility of a city bike. With integrated lights, fenders and a rear rack for cargo, the Fathom E+ EX is made for active lifestyles.
Key Performance Factors
Integrated design
750Wh EnergyPak is integrated into the down tube. The RideControl Dash handlebar has display compatibility and control buttons mounted on the handlebar.
Total control
New SyncDrive Pro 2 motor technology gives you 400 percent of tunable power so you can adjust your E-bike to ride just the way you like. A 130mm suspension fork helps smooth out rough roads and bumpy bike paths.
Off-road accessories
With built-in fenders, a rear rack and integrated lights, this hardtail can do double duty as an everyday trail riding bike or a practical companion for longer treks and adventure rides on dirt.
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 Smart 750 / SyncDrive Pro 2 (2026)
Techs & Features
E+ System
E+ System combines electric power with human power to produce a smart, natural and powerful E-bike riding experience. It’s an integrated group of technologies that includes our RideControl control units, EnergyPak battery systems and SyncDrive motors.
For more information, check out the link below.
Energypak
Giant’s latest EnergyPak battery systems feature streamlined designs that are integrated with the E-bike for a sleek and modern profile. Giant E-bikes offer several different EnergyPak options including the EnergyPak Smart and EnergyPak. Each one is designed to optimize the E-bike experience for a specific style of riding.
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.
RideControl Dash
This two-in-one unit features buttons to control support modes plus an integrated color display. You can check range, battery level and support mode, along with standard cycling data such as speed and distance without having to another screen to the E-bike. It also has an ANT+ connection so you can connect a heart rate monitor and other fitness devices.
Smart Assist
All SyncDrive motors have Smart Assist technology, which adjusts the support to match the rider’s needs. By using information from multiple sensors, both rider input and terrain feedback are used to determine the optimal amount of pedaling assistance. SyncDrive is the only e-bike system that utilizes both rider input and terrain feedback. It gives you a smooth, natural riding experience with ample power when you need it, while also conserving power when you don’t need as much.
SyncDrive
Revolutionize your ride with an E-bike motor system that adapts to you. Experience natural momentum in motion as SyncDrive technology enhances every moment of your journey, opening new horizons for every rider.
SyncDrive Pro 2
The SyncDrive Pro 2 motor delivers 85Nm of torque and up to 400% support. Powered by a 36V system, it runs cooler and more efficient, blending seamlessly with rider input for lasting, responsive performance on any terrain.
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
- 162 cm5’4”
172 cm5’8”
- M
- 169 cm5’7” 179 cm5’10”
- L
- 176 cm5’9” 186 cm6’1”
- XL
- 183 cm6’0” 193 cm6’4”
- XXL
- 190 cm6’3” 200 cm6’7”
| S | M | L | XL | XXL | |
|---|---|---|---|---|---|
| A Seat Tube Length (mm) (inch) | 38015 | 42016,5 | 46018,1 | 49519,5 | 53020,9 |
| B Seat Tube Angle (degrees) | 75,0° | 75,0° | 75,0° | 75,0° | 75,0° |
| C Top Tube Length (mm) (inch) | 59023,2 | 61024 | 63024,8 | 65025,6 | 67026,4 |
| D Head Tube Length (mm) (inch) | 1104,3 | 1204,7 | 1305,1 | 1405,5 | 1505,9 |
| E Head Tube Angle (degrees) | 66,0° | 66,0° | 66,0° | 66,0° | 66,0° |
| F Fork Rake (mm) (inch) | 512 | 512 | 512 | 512 | 512 |
| H Wheelbase (mm) (inch) | 119747,1 | 121948 | 124148,9 | 126249,7 | 128450,6 |
| I Chain Stay Length (mm) (inch) | 47018,5 | 47018,5 | 47018,5 | 47018,5 | 47018,5 |
| J Bottom Bracket Drop (mm) (inch) | 652,6 | 652,6 | 652,6 | 652,6 | 652,6 |
| K Stack (mm) (inch) | 64725,5 | 65625,8 | 66526,2 | 67426,5 | 68426,9 |
| L Reach (mm) (inch) | 41616,4 | 43417,1 | 45117,8 | 46918,5 | 48619,1 |
| N Handlebar Width (mm) (inch) | 75029,5 | 78030,7 | 78030,7 | 78030,7 | 78030,7 |
| O Stem Length (mm) (inch) | 401,6 | 401,6 | 502 | 502 | 502 |
| Q Wheel Size | 29" | 29" | 29" | 29" | 29" |
Boost Your Ride
With a Giant E-bike
All specifications listed are subject to change without notice.