Ride rough roads, paths or singletrack with power and control. This new off-road E-bike helps you conquer hills and challenging terrain in a whole new way.
The all-new Fathom E+ Pro is built on a lightweight ALUXX SL aluminium frame with trail-friendly geometry. It has the new RideControl Ergo that features simple, intuitive handlebar control buttons. New this year is the EnergyPak Smart Compact 625 battery with range extender compatibility. Built to ride on a variety of terrain, from mild XC trails to more challenging technical terrain, this hardtail is specially designed for balanced, stable handling with its 29-inch wheels. The SyncDrive Pro motor gives you 360 percent tunable power, and you can adjust it exactly the way you want. The frame is fitted with a 130mm suspension fork, and the RideControl App connects you with health, fitness and navigation functions.
Key Performance Factors
625Wh EnergyPak is integrated into the downtube. The RideControl Ergo handlebar has RideDash EVO display compatibility and control buttons that connect with the RideControl App for health, fitness and navigation functions.
SyncDrive Pro motor technology gives you 360 percent tunable power so you can adjust your E-bike to ride just the way you like.
Balanced, confident handling
Lightweight, durable aluminium frame is specially designed for 29-inch wheels and a 130mm suspension fork for smooth off-road control.
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.
Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.
The all-new Fathom E+ Pro helps you conquer hills and challenging terrain in a whole new way. New this year is the EnergyPak Smart Compact 625 battery. This hardtail is specially designed for balanced, stable handling with its 29-inch wheels. The SyncDrive Pro motor gives you 360 percent tunable power, and you can adjust it exactly the way you want.
Aluxx SL Aluminum Frame
This state-of-the-art aluminum material is made predominantly from 6011 alloy and delivers best-in-class strength-to-weight ratios. The frameset also features unique welding technologies for a high-performance ride quality.
Hybrid Cycling Technology
This innovative 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 unit, EnergyPak battery systems and SyncDrive Pro motor.
SyncDrive Pro Motor
Tuned to deliver a powerful, performance-oriented riding style for challenging trails and higher cadences, this motor delivers 80Nm of power output with superior torque and support ratios up to 360 percent. The motor engages instantly when power is applied to the pedals.
Handlebar-mounted control unit allows you to adjust the support mode and view the battery level. Ergonomic buttons are built for easy use in off-road riding conditions, and a minimalist design offers a clean, uncluttered handlebar layout.
Six smart sensors precisely measure the power being applied to the pedals so the motor can provide just the right amount of assistance to create a natural, powerful riding experience. This helps optimize energy efficiency for both the rider and the battery system.
RideControl Ergo can wirelessly connect with the RideControl App so your smart phone can function as a display for ride data and system updates.
Giant Tubeless System
Integrated Tubeless WheelSystem and tires deliver improved efficiency, comfort and control in the most user-friendly and reliable system.
Our most advanced E-bike battery system is cleanly integrated within the downtube of the frame. Continuous communication between the battery and charger provides fast charging. Batteries can charge up to 80 percent in 2.2 hours.
130mm of travel up front helps smooth out rough trails so you can ride with greater confidence and control.
Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
Seat Tube Length (mm)(inch)
Seat Tube Angle (degrees)
Top Tube Length (mm)(inch)
Head Tube Length (mm)(inch)
Head Tube Angle (degrees)
Fork Rake (mm)(inch)
Chain Stay Length (mm)(inch)
Bottom Bracket Drop (mm)(inch)
Stand Over Height (mm)(inch)
Handlebar Width (mm)(inch)
Stem Length (mm)(inch)
Crank Length (mm)(inch)
Technologies & 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 a high-performance ride quality.
Hybrid Cycling Technology
Hybrid Cycling Technology is a system that 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 unit, EnergyPak battery systems and SyncDrive motor.
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 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.
RideControl Ergo takes your E-bike riding experience to new levels with optimized controls and a clean handlebar layout. The robust buttons are designed to use in all conditions with a comfortable feel and grip. The controls are thoughtfully designed with new LED lighting that shows your battery level and lets you switch between five support modes (Power, Sport, Active, Basic, Eco). It’s also compatible with the new RideDash EVO, an integrated display that mounts on the handlebar/stem area and shows important ride date such as speed, distance and navigation.
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.