Giant Fathom E+ 3 Electric Bike 2021
Bike details
Key information split into simple groups.
Bike summary
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Frame Aluminum
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Wheels 27.5"
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Travel Front 120mm
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Fork SunTour XCM
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Groupset Alivio, Shimano
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Suspension Hardtail
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Motor Giant 250W 80Nm mid-drive
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Battery Giant EnergyPak 400, 36V 11.3Ah Rechargeable Lithium-Ion
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Drivetrain 1 × 9
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Brakes Hydraulic Disc
Recommended size guide.
SM
163cm - 173cm
MD
170cm - 181cm
LG
178cm - 189cm
XL
186cm - 198cm
Parts list
Main components, grouped by system.
Bike components
Frame
Frame
ALUXX aluminum, Overdrive 1½ - 1?" head tube, 141mm Boost QR, integrated KS18 kickstand mount
Suspension Fork
SR Suntour XCM 32 NLO DS 15AH-110, 27.5 120mm travel, Tapered 1½ - 1?" steerer, lockout
Rear Shock
N/A
Drivetrain
Rear Derailleur
Shimano Alivio M3100, 9-Speed
Front Derailleur
-
Shift Levers
Shimano SL-M2000
Cassette
Shimano CS-HG200, 11-36T, 9-Speed
Crank
Forged Alloy minimal Q-factor, 36T Steel Direct Mount ring
Bottom Bracket
N/A
Chain
KMC e.9 Sport
Pedals
Aluminum Platform
Wheels
Front Hub
Giant eTracker Sport, [F] 15mm Thru-Axle [R] 141mm QR
Rear Hub
Giant eTracker Sport, [F] 15mm Thru-Axle [R] 141mm QR
Rims
Giant AM 27.5, Tubeless ready, 30mm inner width
Spokes
Stainless steel
Tires
Maxxis Recon 27.5x2.6, foldable, 60 TPI
Brakes
Brakes
Tektro HD-M285, hydraulic disc, 180mm
Brake Levers
Tektro HD-M285
Cockpit
Stem
Giant Contact
Handlebar
Giant Connect TR Riser 31.8x750mm
Seat
Saddle
Giant Sport
Seatpost
Giant 30.9mm, 2-bolt Micro Adjustable, Forged Aluminium
Motor & Battery
Motor
Giant SyncDrive Sport
Battery
Giant EnergyPak 400, 36V 11.3Ah Rechargeable Lithium-Ion
Remote
Wireless display compatible (ANT+ and Bluetooth)
Fit data
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.59 mm | 1.53 mm | 1.54 mm | 1.5 mm |
| Bottom Bracket Height | 310 mm | 310 mm | 310 mm | 310 mm |
| Front Center | 669 mm | 690 mm | 712 mm | 733 mm |
| Rake | 46 mm | 46 mm | 46 mm | 46 mm |
| Trail | 100.7 mm | 100.7 mm | 100.7 mm | 100.7 mm |
| Stack | 622 mm | 627 mm | 650 | 659 mm |
| Reach | 391 mm | 410 mm | 422 mm | 440 mm |
| Top Tube Length | 580 mm | 600 mm | 620 mm | 640 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 405 mm | 455 mm | 505 mm | 535 mm |
| Head Tube Angle | 68 ° | 68 ° | 68 ° | 68 ° |
| Head Tube Length | 110 mm | 115 mm | 140 mm | 150 mm |
| Chainstay Length | 475 mm | 475 mm | 475 mm | 475 mm |
| Wheelbase | 1140 mm | 1161 mm | 1183 mm | 1204 mm |
| Bottom Bracket Drop | 45 mm | 45 mm | 45 mm | 45 mm |
| Standover Height | 758 mm | 765 mm | 792 mm | 796 mm |
| Wheels | 27" | 27" | 27" | 27" |
| Rider Min Height | 163 cm | 170 cm | 178 cm | 186 cm |
| Rider Max Height | 173 cm | 181 cm | 189 cm | 198 cm |
About this model
Fathom E+ 3 Electric Bike completes the Giant E Fathom model. Giant launched 25 e-bikes of this model so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
Giant Fathom E+ Junior 2021 is the most affordable e-bike of this model and has a price of 2228$. On the other hand, Giant Fathom E+ Pro 29 2 2021, is the most expensive and costs 4378$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Trail e-bikes
According to our calculations, the average cost of a Trail e-bike that is reliable is 3365$. However, this doesn’t mean that if you spend less money on a Trail e-bike, you couldn’t get a decent one. To make sure you don’t pay a higher amount than normal for your e-bike, always do some components analysis and read reviews.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 2813$. Comparing the average cost of a Trail e-bike to this one, you will see that Fathom E+ 3 Electric Bike price is 19.62% lower.
Fathom E+ 3 Electric Bike components
Fork
Giant Fathom E+ 3 Electric Bike 2021 e-bike is equipped with the SunTour XCM fork, and has 120mm travel. Bike forks absorb the shocks and give you a smooth and pleasant ride. In short, you should always ensure you have a good fork when purchasing a bike.
Wheels
As for the wheels, Giant Fathom E+ 3 Electric Bike 2021, has a 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
When you want to stop the bike in time, the brakes are vital. The Fathom E+ 3 Electric Bike has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, these are ideal for anyone.
Sizes
Giant Fathom E+ 3 Electric Bike e-bike has 4 sizes, in the range of 163 cm – 198 cm (5.35 ft – 6.5 ft). In conclusion, finding one for you shouldn’t be a problem.
