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2020 Giant

Reign E+ 1 Pro Electric Bike

A 27.5″ aluminum frame full suspension enduro e-bike with high-end components.
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Manufacturer Price

£4,999($6,707)
Weight52.7 lbs  
FrameAluminum
SuspensionFull, 160 / 170mm
ForkFox Performance Float 36
ShockFox Float X2 Performance
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetXT
MotorYamaha 250W 80Nm mid-drive
BatteryGiant 500Wh
BrakesShimano XT Hydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Reign E+ 1 Pro Electric Bike
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

29 mph

Reign E+ 1 Pro Electric Bike

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Giant Reign is a robust enduro bike designed for challenging terrain, offering plush suspension and stable handling at high speeds. However, its long chainstays and weight can hinder maneuverability in tight spaces. The bike's motor and battery systems are praised for their power and efficiency, though some setups may require fine-tuning for optimal performance.

Pros
  • Plush suspension performance

  • Stable and confident at high speeds

  • Powerful and efficient motor system

  • High-quality components and durable build

  • Smart Assist mode for efficient battery use

Cons
  • Long chainstays affect maneuverability

  • Heavy weight impacts handling at slow speeds

  • Requires careful suspension setup

  • Motor may judder when stationary

  • Limited battery range on some models

Key Quotes
A solid spec and intelligent motor but the Reign E+’s long back-end means it’s not as manoeuvrable, agile or confident as some of its competitors when things get technical.
BikeRadar logoBikeRadar
No other motor offers as much support at slow cadences.
E-Mountainbike Magazine logoE-Mountainbike Magazine
HOLY MOLY THAT SUSPENSION IS P-L-U-S-H!
Flow Mountain Bike logoFlow Mountain Bike
Rock solid, all-mountain ready and feels like a proper workhorse
MBR logoMBR
These things are enablers of adventure.
NSMB logoNSMB

Feedback?

View all reviews

Pinkbike
Giant Releases New Reign E+ With Mixed Wheels

Aug 2021 · Matt Beer

The 2022 Reign E+ gets a bigger battery, a new motor, and geometry updates.

Read Review

Enduro Mountainbike Magazine
The 2021 GIANT Reign Advanced Pro 0 review – Let's get rowdy!

Jan 2021 · Christoph Bayer

There are bikes that make it easy to ride fast. They offer a lot of grip, the rider is positioned centrally on the bike and they're easy to handle. The GIANT Reign is NOT that kind of bike. Still, it's a lot of fun!

Highs
  • Good poppy suspension

  • A lot of fun with an active riding style

  • Its length adds stability in steep terrain

Lows
  • Suspension reaches its limit on rough tracks

  • Requires an active riding style

  • Sizing excludes a lot of riders

Read Review

Singletrack World
Giant Reign Advanced Pro 2 - Long Term Review

Jan 2021 · David Gould

Giant reckons their Reign 29er could be the ultimate Enduro machine but what do we make of it after subjecting it to eight months of testing?

Read Review

Mountain Bike Action
Mountain Bike Action Bike Test: Giant's Custom Reign Enduro Bike

Nov 2020

An old dog with new tricks

Read Review

Flow Mountain Bike
TESTED | Long-Term Review Of The Giant Reign E+

Aug 2020

Mick Reviews The Giant Reign E+ 1 Pro Around this time last year, Giant Bicycles unleashed its biggest and brawniest e-MTB to date; the Reign E+. As the

Highs
  • Mighty ability

  • Confident and comfortable

  • Ultra-sensitive power delivery

  • Suitable spec for e-chaos riding

  • Reliable and unshakable build and motor

Lows
  • Weight, length and strong alliance to gravity

  • Not-so-subtle appearance

  • Small 500Wh battery

  • Ground clearance

Read Review

Loam Wolf
eMTB Roundup: Giant Reign E+ 0 Pro Review

Mar 2020 · Drew Rohde

Giant has some interesting tech going on with their latest Reign ebike, however, there are some issues we faced with the Yamaha motor and overall trail performance of the bike that we need to address. Read our full review on the Reign E+ Pro here.

Read Review

BIKE Magazine
Bible Review: Giant Reign 29 Advanced Pro 0

Jan 2020

The new Reign has a lot going for it—it’s a looker, it climbs and descends beautifully, and above all it’s fun.

Read Review

E-Mountainbike Magazine
Giant Reign E+ 0 Pro in Review

Dec 2019 · Felix Stix, Robin Schmitt, Jonas Müssig

Carbon, light-weight, large battery: all these are foreign terms to the Giant Reign E+ 0 Pro. Can its robust features and componentry convince nonetheless?

Highs
  • One of the highest weight ratings in the group test

  • Smart Automatic support mode

  • Excellent suspension offering a lot of traction

Lows
  • Energy-robbing on the descents

  • Too little dropper travel/long seat tube

  • Counterintuitive remote sequence

Read Review

Geometry
Specs
Build
Frame

ALUXX SL-grade aluminum, 160mm Maestro suspension system, 'Boost' 148x12QR, Giant EnergyPak Plus range extender compatible

ColorElectric Red

Fork

Fox 36 Float Performance 27.5, 170mm, 3-position Micro Adjust Grip Damper, Boost 110x15QR, e-Bike optimized

Travel170mm

Spring TypeAir

Shock

Fox Float X2 Performance, EVOL Large Volume sleeve, 2-position lever, 205x62.5mm Trunnion mount, custom tuned

Travel160mm

Bottom Bracket

N/A

Stem

Giant Contact SL 35

Handlebar

Giant Contact Trail, 35x800mm

Saddle

Giant Contact, Neutral

Seatpost

Giant Contact Switch, dropper, 30,9mm (S:100/M:125/L:150/XL:170)

TypeDropper

Pedals

-

Groupset
Rear Derailleur

Shimano Deore XT, 12-Speed, Shadow+

Front Derailleur

MRP 1X custom "V3" co-moulded TR chain guide

Crank

Praxis Wavetm 36T Cold Forged 4130 premium steel Praxis e-Cadet+ custom forged crankarm set (Q-factor=168, S/M:160, L/XL:165)

Shifters

Shimano Deore XT, 12-speed

Cassette

Shimano HG-M7100, 10-51T, 12-Speed

Chain

KMC e.12 Turbo, EcoProteq, e-bike optimized

Brakes

Shimano Deore XT, BR-M8120, 4-piston, hydraulic disc, 203mm

TypeShimano XT Hydraulic Disc

Brake Levers

Shimano Deore XT, BL-M8120

Wheels
Rims

Giant e-TR1 27.5, Tubeless ready, 30mm inner width

Spokes

Giant e-TR1

Front Hub

Giant e-TR1 [F] 110x15 [R] 148x12mm Thru-axle

Rear Hub

Giant e-TR1 [F] 110x15 [R] 148x12mm Thru-axle

Tires

Maxxis Minion DHF 27.5x2.6" foldable, Tubeless, EXO+, 3c MaxxTerra[F]Maxxis High Roller II 27.5x2.6" foldable, Tubeless, DoubleDown, 2x120tpi, 3C MaxxTerra Compound [R]

Electric Components
Motor

Giant SyncDrive Pro, automatic support, 5-mode, 50-360% tunable support, 80Nm, powered by YAMAHA

Battery

Giant EnergyPak Smart 500, 36V 13.8Ah integrated Lithium-Ion

Display

Giant RideControl One

Rider Notes
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First added March 20

Last updated March 20

Not listed for 1,911 days