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Giant Fathom E+ 2 Pro 27.5"+ 2019 - Electric Mountain Bike

Giant Fathom E+ 2 Pro 27.5"+ 2019 - Electric Mountain Bike

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Product Description

Conquer hills and ride challenging MTB terrain in a whole new way. The Giant Fathom E+ 2 Pro is a powerful hardtail electric mountain bike that boosts you natural pedalling power, so you can ride further. With its SyncDrive Pro motor combined with a RockShox Recon suspension fork and Shimano groupset, the Fathom E+ is ready to ride rough roads paths and singletrack with more power and control.

Key Features:

  • ALUXX aluminium frame with neatly integrated battery pack
  • RockShox Recon fork for 120mm of smooth bump soaking suspension travel
  • Shimano XT/Deore 1x10 speed drivetrain
  • Shimano hydraulic disc brakes for all-weather stopping power
  • 5” wheels with wide 2.6” Maxxis tubeless tyres
  • Sizes: Small, Medium, Large, X Large
  • Colour: Blue
  • The Giant Fathom E+ Pro 2 27.5” is available with 0% APR finance

Drive Information:

Motor: Giant SyncDrive Pro, 80Nm powered by YAMAHA, 350% tuneable support

Battery: Giant EnergyPak 500, 36V 11.3Ah Lithium-Ion Panasonic

User interface/remote: Giant RideControl ONE, remote button

Connectivity: Giant E-Bike smart phone app

Integrated design: 500Wh EnergyPak is integrated into the down tube and RideControl ONE handlebar control buttons connect with an E-bike-specific App for health, fitness and navigation functions.

Tuneable support: SyncDrive Pro motor technology gives you 360 percent tuneable power to adjust your E-bike to the way you prefer.

Responsive hardtail handling: Frame is designed for and fitted with a 120mm suspension fork for smooth off-road control.

SyncDrive Pro: SyncDrive Pro is tuned to deliver a powerful, performance-oriented riding style. The lightweight and compact motor is updated for 2019 with the possibility to tune it just the way the rider wants. With a predictable output that reacts to human input, the motor produces linear support to give you more control while riding.

The 80Nm power output offers superior torque and support ratios up to 360 percent. This means that, in the Power mode, 100 percent of human torque input offers 360 percent pedal-assist. This offers more freedom in how the E-bike rides and handles.

Made for performance minded riders, this motor offers 80Nm of powerful support with up to 120 max rpm in the three upper support modes (Active, Sport, Power). The rider experiences no power loss while reaching higher levels of cadence, which makes steep climbs more accessible and comfortable. At the two entry support modes, the rider is rewarded with 110 max rpm and 80Nm of motor torque.

SyncDrive Pro is tuned to give quick and direct response to pedalling, delivering 100% of motor torque in less than 190 milliseconds. Both the ISIS bottom bracket interface and clutch have been updated to provide a quicker, more direct response. Backlash of the ratchet mechanism is reduced by one third and a hollow axle shaft creates a quicker, more direct response. With the narrowest Q-factor of 168mm, SyncDrive Pro makes performance riding even more natural.


SUPERIOR POWER OUTPUT: Giant’s most powerful motor technology with a massive 80Nm of torque for steep climbs and a 360 percent support ratio.

TUNEABLE PERFORMANCE: The rider can adjust the support ratios for a more dynamic ride experience that matches every rider’s individual needs.

LIGHTWEIGHT & COMPACT: A lighter, more compact motor package with a narrow Q-factor delivers the ultimate cycling experience.

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.

Small, integrated buttons let you shift through support modes with ease. The buttons are designed to use in all conditions. They are more robust and designed with a pattern for added grip. The controls are thoughtfully designed with LED lighting that shows your battery level and support mode while you are riding. The RideControl ONE has a minimalist design, displaying the essential information needed to help riders perform their best.

SMART INTEGRATION: Smart, minimalist technology and design featuring integrated control buttons.

EASY HANDLING: With only a few button controls and indicators, it offers simple control of your E-bike

PedalPlus 4: Giant’s PedalPlus 4-sensor technology precisely measures the amount of force a rider is applying to the pedals so that the motor delivers a seamless power boost. The system uses speed and torque sensors along with motor and pedal rotation sensors to produce even power across the entire gear range. The result is predictable power that feels totally natural in any gear and makes riding the bike feel smooth and powerful on all types of terrain.

TORQUE SENSOR TECHNOLOGY: The torque sensor reacts to pedal pressure. The more pressure you apply to the pedals, the more support you get from the motor. It precisely measures this force so that the motor can deliver a seamless power boost.

SPEED SENSOR TECHNOLOGY: The speed sensor works independently from the pressure you are putting on the pedals. It precisely measures the speed the rider is travelling.

MOTOR AND PEDAL ROTATION SENSORS: Allows the motor to run as smoothly and seamlessly as possible

NATURAL FEELING: The torque sensor measures the amount of power the rider is applying to the pedals so that the motor can replicate the natural riding style, adding assistance when needed.

EFFICIENCY: The PedalPlus 4-sensor technology maximises energy efficiency for both the rider and the battery system.

Instant Support: The combination of the sensor technology and the instantaneous response of the SyncDrive motor creates a smooth and powerful riding experience.

Downtube EnergyPak: Future-proof with the new down tube EnergyPak. This updated EnergyPak is mounted in the down tube of our E-bikes. The biggest difference between the side release and top pull EnergyPak is a more minimalist down tube design. This makes it look more integrated and streamlined with the rest of the E-bike frame.

With an aluminium casing, a moulded bottom protector and a double lock feature, this Down tube EnergyPak can handle rough rides. It is able to communicate with the charger and has highly innovative cells that are individually controlled by the smart charger. This gives the Down tube EnergyPak a longer lifetime. 

Heat build-up is managed internally by having double the space between cells giving more temperature control. This makes it safer to handle.

This EnergyPak is also easy to access. With one turn of a key, it releases from the down tube and is ready to charge. The EnergyPak is equipped with highly innovative cells that charge to more than 60% within 90 minutes with 6A charger.


INTEGRATED DESIGN: The Down tube EnergyPak offers a well-established, integrated design with more minimalist down tube profile.

EASY TO OPERATE: Easy and safe to handle, the Down tube EnergyPak has two locks so it can be easily removed without any hassle.

SMART CHARGING: Offers smart charging with 6 Ampere charging possibilities that can reach over 60% of capacity in only 90 minutes.

All Tredz bikes are:

  • Fully built & ready to ride
  • Fully checked & tested by Cytech qualified mechanics
  • Available with 0% APR finance on baskets over £99
  • 365 day no hassle returns
  • Free delivery in the UK Mainland on a date that suits you

In the box with every Tredz bike is:

  • Free Tredz 9 key trail tool
  • Free Tredz pedal spanner
  • Free basic pedals
  • Tredz drawstring kit bag
  • 16 point quality control check sheet
  • Basic bike setup instructions
  • Free Cycle Plan insurance voucher (8 weeks)

Occasionally, without notice, manufacturers change product design and/or specifications.


Frame:ALUXX SL aluminum, Overdrive 1½ - 1⅛" head tube, 148x12mm Thru-Axle, integrated KS18 kickstand mount
Fork:Rock Shox Recon RL 120mm travel, Tapered 1½ - 1⅛" steerer,110x15QR, lockout
Stem:Giant Connect
Bars:Giant Connect TR, 780mm
Front Brake:Shimano BR-MT500, hydraulic disc, 180mm
Rear Brake:Shimano BR-MT500, hydraulic disc, 200mm
Brake Lever:Shimano BL-MT500, i-spec II
Rear Mech:Shimano Deore XT, Shadow+
Shifters:Shimano Deore 1x10
Rims:Giant AM 27.5+, Tubeless ready, 35mm inner width, e-bike optimized
Front Hub:Giant eTracker Boost, Sealed cartridge bearing, 6-bolt, [F] 110x15 [R] 148x12mm Thru-axle, e-bike optimized
Rear Hub:Giant eTracker Boost, Sealed cartridge bearing, 6-bolt, [F] 110x15 [R] 148x12mm Thru-axle, e-bike optimized
Spokes:Sapim E-Lite [r] Race [f], e-bike optimized
Front Tyre:Maxxis Forekaster 27.5x2.6, foldable, 60 TPI, EXO, Tubeless Ready
Rear Tyre:Maxxis Forekaster 27.5x2.6, foldable, 60 TPI, EXO, Tubeless Ready
Seat Post:Giant 30.9mm, 2-bolt Micro Adjustable, Forged Aluminium
Saddle:Giant Contact, Neutral
Chainset:Praxis Wavetm 36T Cold Forged 4130 premium steel Praxis e-Cadet+ custom forged crankarm set
Chain:KMC e.10 Turbo, e-bike optimized
Cassette:Shimano HG50-10, 11-36T
Pedals:Basic Resin Flat
Battery (Wh):500 Wh
User Interface:Giant RideControl ONE

Giant Fathom E+ 2 Pro 27.5"+ 2019 - Electric Mountain Bike Reviews

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Customer Reviews (1)

by Anonymous user on 11/01/2020

This bike has transformed my riding. I can now go to more remote mountains and climb higher. Thank jasmine. Dp🏴󠁧󠁢󠁳󠁣󠁴󠁿👍

This bike has transformed my riding. I can now go to more remote mountains and climb higher. Thank jasmine. Dp🏴󠁧󠁢󠁳󠁣󠁴󠁿👍

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4.7 out of 5
Build Quality: 4/5
Performance: 5/5
Value For Money: 5/5