Everything a young rider needs to climb higher, ride longer and have more fun on XC trails. This all-new E-bike will put a smile on any kid’s face and make off-road family adventures more fun than ever.
The new Fathom E+ Jr. opens up a world of off-road adventures for young riders. Its lightweight ALUXX aluminum frame and trail-friendly geometry make it easy to handle for smaller riders. It has 26-inch wheels for balance and control on dirt paths and singletrack trails. Equipped with our tunable SyncDrive Sport 70Nm technology, which delivers up to 350 percent more pedaling power, it helps young riders tackle tough climbs with ease. Designed with the new integrated EnergyPak400 and RideControl ONE button controls, it has an integrated look and feel that’s incredibly user-friendly. The frame is designed for a 120mm suspension fork and a 9-speed drivetrain, and the Giant E-bike App lets you tune the motor just the way you like.
Key Performance Factors
Responsive hardtail handling
ALUXX aluminum frame is designed for and fitted with a 120mm suspension fork for a smooth hardtail experience, and the SyncDrive Sport delivers up to 350 percent pedaling power.
RideControl ONE gives this kid’s trail bike integrated, simple button controls that are easy to use. The Giant E-bike App offers navigation, health and fitness functionalities.
Downtube-integrated EnergyPak Smart battery with 500Wh of capacity charges up to 80% in 60 minutes with our 6A Fast Charger.
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.
Forged Alloy minimal Q-factor, 36T Steel Direct Mount ring
Giant GX03 Aluminium 559x21
Giant eTracker Sport, [F] 9mm QR [R] 141mm QR
Maxxis Ikon 26x2.20" EXO anti-puncture
Giant EnergyPak 4A fast charger
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.
The specifications, colors, and availability of the products can be subjects to alter without prior notification. For availability and prices, please contact the retailers in your city / country.
Sizing Guide and Geometry
Sizing to be used as a reference only. Please check with a local authorized Liv or Giant dealer to determine the correct size. Available sizes may vary from country to country.
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)
Handlebar Width (mm)(inch)
Stem Length (mm)(inch)
Crank Length (mm)(inch)
Techs & Features
ALUXX Aluminum Technology
This Performance level frame material features 6061 alloy with single-butted tubes to produce strong, lightweight framesets for a variety of different bikes and riding styles.
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.
Innovation, manufacturing expertise and a motor system powered by Yamaha all combine to expand any rider’s abilities. SyncDrive Sport offers three support modes and is equipped on E-bikes that are used for both everyday riding and for more demanding off-road riding. This small mid-drive motor delivers a massive maximum 80Nm of torque and is widely acclaimed for its performance and reliability.
RideControl ONE takes your E-bike riding experience to new levels with integrated button controls and a clean handlebar free of any display. The E-bikes equipped with RideControl ONE can connect with the Giant E-bike App to function as your E-bike display
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.