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Giant Fathom E+ 3 29er 2019 - Electric Mountain Bike

£1,899.00
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or £52.70 / month
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Free insurance Includes 8 weeks Free Bike Insurance. Find out more.

Product Description

Discover the joys of the trail and explore further with less effort. The Giant Fathom E+ 3 is a 29er hardtail electric mountain bike that offers a boost to you natural pedalling power which makes the climbs much easier. With 100mm travel suspension fork, hydraulic disc brakes and Maxxis tyres the Fathom is ready to extend your MTB adventure.

Key Features:

  • ALUXX aluminium frame with neatly integrated battery pack
  • SR Suntour XCM 34 fork for 120mm of bump soaking suspension travel
  • Shimano Altus/Deore 1x9 speed drivetrain
  • Tektro hydraulic disc brakes for all-weather stopping power
  • 29” wheels with 2.4” Maxxis tubeless tyres
  • Sizes: Medium, Large, X Large
  • Colour: Grey
  • The Giant Fathom E+ 3 29er is available with 0% APR finance

Drive Information:

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

Battery: Giant EnergyPak 400, 36V 11.3Ah Lithium-Ion Panasonic

User interface/remote: Giant RideControl ONE, remote button

Connectivity: Giant E-Bike smart phone app

Smooth power delivery: The SyncDrive Sport motor technology delivers smooth, instantaneous power to conquer all kinds of terrain.

Superb handling: 100mm front suspension and the superior fast rolling performance of 29” wheels with tubeless tyres add up to better control and handling.

Responsive hardtail handling: Lightweight ALUXX SL aluminium frame and trail-friendly geometry keep you in control on off-road terrain.

SyncDrive Sport: With five support modes and tuneable support ratios up to 350 percent, the SyncDrive Sport motor stands out in its class for 2019. These new features enable riders to extend their abilities. SyncDrive Sport is ideal for E-bike riders seeking a do-it-all solution for their E-bike experiences. With up to 80Nm of torque and an instant response of 500 milliseconds, SyncDrive Sport delivers high power, even at low speeds. The result is a quiet, comfortable and powerful riding experience.

TUNEABLE POWER: With up to 80Nm of torque, SyncDrive Sport delivers high power, even at low speeds. The tuneable support ratios offer riders more flexibility in their riding preferences.

INSTANT RESPONSE: The SyncDrive Sport motor engages instantly when power is applied to the pedals. This helps the rider when accelerating and offers reliable performance on steep climbs.

PROPORTIONAL POWER DELIVERY: The SyncDrive Sport motor produces proportional and linear support. This means the power feels smooth, like a natural extension of human power.

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.

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.

Side Release EnergyPak: The side release EnergyPak can be removed from the frame by moving it sideways. This allows for more compact frame designs and lower stand-over heights. The side release batteries have a capacity of 400Wh and 500Wh and are used on mountain and trekking E-bikes. The total weight of these EnergyPaks is 3.2kg, optimising the balance and performance of the E-bike.

LOWER STAND-OVER HEIGHTS: Lower stand-over heights make it easier to get on and off the E-bike.

Optimised GEOMETRIES: More compact frame designs are now possible with the new side release EnergyPak.

EASY HANDLING: The side removable EnergyPaks are easy to handle and remove from the E-bike.

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
  • UK price match guarantee
  • 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.

Specification

Frame:ALUXX aluminum, Overdrive 1½ - 1⅛" head tube, 141mm Boost QR, integrated KS18 kickstand mount
Fork:SR Suntour XCM-ATB HLO DS 29" 100mm travel, Tapered 1½ - 1⅛" steerer, lockout
Stem:Giant Connect
Bars:Giant Connect TR, 780mm
Front Brake:Tektro HD-M285, hydraulic disc, 180mm
Rear Brake:Tektro HD-M285, hydraulic disc, 180mm
Brake Lever:Tektro HD-M285
Rear Mech:Shimano Deore
Shifters:Shimano Altus 1x9
Speed:9
Rims:Giant GX03 Aluminium 622x21
Front Hub:Giant eTracker Sport, 9mm QR, e-bike optimized
Rear Hub:Giant eTracker Sport, 141mm QR, e-bike optimized
Spokes:Stainless steel
Front Tyre:Maxxis Ardent 29x2.4", EXO, 60 TPI
Rear Tyre:Maxxis Ardent 29x2.4", EXO, 60 TPI
Seat Post:Giant 30.9mm, 2-bolt Micro Adjustable, Forged Aluminium
Saddle:Giant Contact, Neutral
Chainset:Forged Alloy minimal Q-factor, 36T Steel Direct Mount ring
Chain:KMC e.9 Sport, e-bike optimized
Cassette:Shimano CS-HG201, 11-36T
Pedals:Aluminum Platform
Battery (Wh):400 Wh
Motor:Giant
User Interface:Giant RideControl ONE

Giant Fathom E+ 3 29er 2019 - Electric Mountain Bike Reviews

Write your own review
Overall Rating:
5
out of 5
5.00
Build Quality
5.00
Performance
5.00
Value For Money
5.00

Customer Reviews (1)

5
Giant Fathom e+ 3

Excellent machine.quality build and good components .once you start riding it is hard to stop smiling.Should have bought this sooner

Excellent machine.quality build and good components .once you start riding it is hard to stop smiling.Should have bought this sooner

Close review
5 out of 5
Build Quality: 5/5
Performance: 5/5
Value For Money: 5/5

Fathom E+ 29Er Sizing

Fathom E+ 29er Sizing

See the table below to find the right size Giant Fathom E+ 29er.

Inside Leg (Inches) Vs Rider Height (Feet & Inches)

26”

27”

28”

29”

30”

31”

32”

33”

34”

35”

36”

37”

5’ 3”

 

 

S

S

S

 

 

 

 

 

 

 

5’ 4”

S

S

S

S

S

 

 

 

 

 

 

 

5’ 5”

S

S

S

S

S

 

 

 

 

 

 

 

5’ 6”

 

S

S

S

S

S

 

 

 

 

 

 

5’ 7”

 

 

S

S

S

M

M

 

 

 

 

 

5’ 8”

 

 

 

M

M

M

M

M

 

 

 

 

5’ 9”

 

 

 

M

M

M

M

M

 

 

 

 

5’ 10”

 

 

 

 

M

M

M

M

M

 

 

 

5’ 11”

 

 

 

 

M

M

M

M

M

 

 

 

6’ 0”

 

 

 

 

 

M

M

L

L

L

 

 

6’ 1”

 

 

 

 

 

L

L

L

L

L

 

 

6’ 2”

 

 

 

 

 

 

L

L

L

L

L

 

6’ 3”

 

 

 

 

 

 

L

L

L

L

L

 

6’ 4”

 

 

 

 

 

 

 

L

L

XL

XL

XL

 Read our bike size guide for more information on sizing.

 

Fathom E+ 29er Geometry

 

M

L

XL

Seat Tube Length

465

505

535

Seat Tube Angle

73

73

73

Top Tube Length

600

625

650

Head Tube Length

115

125

140

Head Tube Angle

68

68

68

Fork Rake

51

51

51

Trail

96

96

96

Wheelbase

1171

1197

1223

Chain Stay Length

475

475

475

Bottom Bracket Drop

45

45

45

Stack

626

635

649

Reach

408

430

451

Stand Over Height

760

787

791

Handlebar Width

780

780

780

Stem Length

60

60

70

Crank Length

170

170

170

Wheel Size

29”

29”

29”

Read our Mountain Bike Geometry Explained guide for more information on MTB geometry. 

 

Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!

Electric MTB Guide

 

Electric Mountain Bike Guide

Is an Electric Mountain Bike Right for Me?

If you’re new to the cycling world, we highly recommend taking a look at our bike buying guide overview or our electric bike buying guide to help you decide what type of e bike is right for you.

When you’re choosing an electric mountain bike, there are a few things to look out for, which can help you to work out the quality and performance to expect from a particular model.


Usage & Suspension travel

Just like a regular full suspension or hardtail mountain bike, the amount of available suspension travel on an eMTB varies with the intended use. Depending on the type of mountain bike riding you’ll be doing, you’ll want a bike with longer or shorter suspension travel as well as components suited to more or less technical terrain.

Type

Travel

Usage

Pros

Cons

Hardtail

Up to 130mm travel fork

Cross-country and trail

Nimble handling more affordable than a full suspension eMTB

Hardtails are less capable on rough and demanding trails with large jumps and drops

Full Suspension – short travel

120mm – 150mm

Trail and cross-country

Well balanced for both climbing and descending

Less capable on challenging descents than a longer travel bike

Full Suspension – long travel

150mm +

Enduro, trail and downhill

More capable on rough, steep and technical descents, including DH and enduro tracks

Heavier and less manoeuvrable on tight trails. More cumbersome on the climbs

Type / Travel / Usage

Pros

Cons

Hardtail

Up to 130mm travel fork

Cross-country and trail

Nimble handling more affordable than a full suspension eMTB

Hardtails are less capable on rough and demanding trails with large jumps and drops

Full Suspension – short travel

120mm – 150mm

Trail and cross-country

Well balanced for both climbing and descending

Less capable on challenging descents than a longer travel bike

Full Suspension – long travel

150mm +

Enduro, trail and downhill

More capable on rough, steep and technical descents, including DH and enduro tracks

Heavier and less manoeuvrable on tight trails. More cumbersome on the climbs


Frame Material

Most electric mountain bike frames are made from aluminium alloy, although some are made from carbon fibre composite.

Aluminium

Aluminium alloy is lightweight, stiff, strong. Manufacturers often develop their own aluminium alloys, such as ALUXX by Giant. Aluminium is found on a wide range of e bikes, from entry-level and enthusiast bikes, right the way up to top-spec eMTBs.

Carbon Fibre

Carbon fibre is lighter, stiffer, stronger, and more expensive than aluminium. The main benefit for electric mountain bikes is that carbon frames are stiffer for improved handling.


Drive Tech

Designed to enable you to have more fun on the trails, all of our electric mountain bikes feature powerful crank drive motors with long lasting lithium-ion battery packs and easily accessible control units.

Motor

Crank drive motors boost your natural pedalling power. The cranks are connected to the motor and the motor is connected to the chainring which then powers the bike forward. The bike senses the pressure that you put though the pedals and then adds an appropriate level of power to make pedalling easier. This additional power is delivered seamlessly, and you will feel like your legs have just become much more powerful. Motors all have a nominal 250w output and are usually provided by big component manufacturers like Bosch, Shimano, Yamaha and Brose.

Illustration showing a electric motor on a electric bike

Battery

Easily charged either on or off the bike the lithium-ion battery pack will offer you long lasting assistance. Where and how you ride will make a big difference to the range that you can expect to achieve from a single charge, but most e bikers find the capacity of these batteries to be more than sufficient. Some brands offer innovative ways to integrate the battery within the frame. 400Wh or 500Wh batteries are most common.

Illustration showing a battery mounted to a ebike frame

Control Units

All electric mountain bikes allow you to adjust the amount of power the motor delivers. This helps to help you manage the battery capacity. Control units have some kind of display that, at the very least, shows remaining battery capacity and the current power mode. Some control units feature a handlebar mounted display unit that displays additional information like estimated range and satellite navigation prompts. Many eMTBs offer Bluetooth and ANT+ connectivity with smartphone apps for fine tuning the motor output and accessing more advanced features.

Illustration showing a heads up display mounted to the handlebars

Groupset

An electric mountain bike’s groupset, is where the biggest difference in component quality is seen. A complete groupset comprises of the following parts:

  • Chainset (aka Crankset)
  • Bottom bracket
  • Brakes
  • Brake levers
  • Shifter
  • Derailleur
  • Chain
  • Cassette

Electric mountain bike groupset components are typically supplied by either Shimano or SRAM, sometimes with additional manufacturers like Magura, Tektro and TRP supplying brake systems. You will mostly find one-by drivetrains with a single front chainring and a wide range rear cassette.

Shimano and SRAM both produce a range of groupsets to suit different budgets. The hierarchy table here compares the different Shimano and SRAM groupsets to determine which bikes offer the best performance.

Groupset comparison - Shimano & SRAM

Wheel Size

Just like regular mountain bikes, e MTBs are available with different wheel sizes. 27.5” (650b) and 29” wheels are both available but the most common e MTB size is 27.5”+ (6fattie) that bridges the gap between the two.

MTB wheel sizes

27.5” (650b) wheels strike the ideal balance between fast rolling and nimble handling. They are lighter than 29” wheels so are faster to accelerate. On the other hand, the smaller wheel size rolls less efficiently than the larger size, making the bike more prone to losing speed over rough ground.

29” wheels roll fastest but are less nimble. These wheels are naturally smoother over rough ground but are heavier and slower to accelerate. Larger riders may find a better fit on a 29er, but smaller riders may find 29” wheels a little cumbersome.

27.5+ (6fattie) wheels feature wider 2.8” – 3.0” tyres and offer more cushioning (float) as well as more grip. With the extra size of the high-volume tyres, the overall wheel diameter is similar to a 29er, so these wheels carry speed very well on rough ground. Plus sized wheels are ideal for electric mountain bikes as they deal best with the extra weight of the motor and battery, and are great for riding more challenging terrain.


Suspension components

Electric mountain bike suspension components (i.e. the fork or rear shock absorber) are also a way to identify the quality of a bike. While Fox and RockShox are the most common manufacturers, there are a number of brands producing suspension components for mountain bikes.

Entry Level eMTBs

Entry level electric mountain bikes (up to approximately £2,500) may come supplied with a fork and rear shock supplied by SR Suntour, X-Fusion or RockShox. These components will allow a limited amount of adjustment, including:

  • Coil spring preload / air spring pressure adjustment.
  • Lockout switch.
  • Rebound damping adjustment on models towards the top of the price range.
Mid-range and enthusiast eMTBs

Mid-range and enthusiast eMTBs (up to approximately £5,000) use components from brands including Fox, RockShox and Manitou. At this level, suspension components have features like:

  • Preload adjustment / air spring pressure adjustment
  • Rebound damping adjustment
  • Lockout switch
  • Multi-position ‘mode’ switch
  • Compression damping adjustment
Top of the range eMTBs

Top of the range electric bikes (over £5,000) also use components from Fox, RockShox and Manitou, with a few select models using parts from high-end suspension brands like Ohlins. At this price, suspension components have features including:

  • Coil spring preload adjustment / air spring pressure adjustment
  • High and low speed rebound damping adjustment
  • High and low speed compression damping adjustment
  • Lockout switch
  • Multi-position ‘mode’ switch
  • Advanced low-friction coatings (e.g. Fox’s golden-coloured Kashima coating)

Finance

How do I apply for finance?

Spend £99 or more at Tredz and you can spread the cost. Pay monthly over 6-48 months, interest free (dependent on repayment terms and amount).

1Fill your basket with everything you want from Tredz and go to the checkout.

2During checkout, select the finance option you want as your method of payment.

3You will be sent to our finance provider's secure server to complete your application.

4Finance providers PayPal & V12 will use the information provided to make a decision and complete checkout if you are approved.

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Delivery & Guarantee

UK Delivery Information

We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.

Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

Please note that Pre-Order dates can sometimes change due to updated stock information.

Click here for more UK and international delivery information.

Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns. 

We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.

What's In The Box

What's In The Box

As cyclists ourselves, we know you will be keen to get out on your new bike as soon as possible. That's why we provide you with all the essential kit you need to get your shiny new bike rolling for the first time.

Most bikes don't come with pedals as standard so we include a set of basic pedals, free of charge with every bike we send out. We will also provide you with a pedal spanner to fit them and a 9-key trail tool, along with full instructions for setting your bike up out of the box. Each bike is sent out with a 16 point, quality control check sheet so you can be confident that your bike has been fully checked by our qualified mechanics.

What's in the box
  • Basic setup instructions
  • 16 point quality control checklist
  • Free tredz multitool
  • Free tred pedal spanner
  • Free basic pedals
  • Free drawstring kit bag
  • Free bike insurance voucher

All these items are provided at no extra charge and are packed into a Tredz drawstring bag that doubles up as a handy backpack for carrying your ride essentials.

  • Basic bike setup instructions
  • Free ‘basic’ pedals
  • Free Tredz pedal spanner
  • Free Tredz 9-key trail tool
  • Free Tredz drawstring bag
  • Free 8 weeks insurance voucher
  • 16 point, quality control check sheet

Tredz Service:

Tredz bikes are fully built & set up to ride
Read our bike setup guide.

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  • Tredz bikes are fully checked & tested by Cytech qualified mechanics
  • 0% APR finance available on any basket over £99
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  • 365 day 'no hassle' returns
  • Free UK delivery, on a date that suits you

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