2026 Giant Reign Advanced E+ 1

Name: Giant Reign Advanced E+ 1 (2026)
Brand: Giant
Price: 5249.00 GBP
Availability: InStock

A capable mountain e-bike with smooth power and strong brakes for confident trail riding.

£7,499.00

▲ £1,840.93 above similar bikes

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Top valued features

Highlights based on this e-bike’s specs, comparisons and practical strengths.

100

Excellent downhill control

Front and rear suspension should improve control and confidence on descents.

Front and rear suspension should improve control and confidence on descents.
Hydraulic disc brakes should provide controlled braking on descents.
The 29-inch or mullet wheel setup should help stability and control on descents.
The mountain bike design should be better suited to controlled descending.

100

Excellent off-road capability

The mountain bike design should be well suited to off-road riding.

The mountain bike design should be well suited to off-road riding.
Front and rear suspension should improve control and comfort off-road.
Hydraulic disc brakes should help with control on loose or uneven terrain.
Torque is strong compared with similar e-bikes, which should help on loose or uneven climbs.
The 29-inch wheel size should help rollover and stability on rougher terrain.

Excellent technical trail control

The mountain bike design is well suited to technical trail control.

The mountain bike design is well suited to technical trail control.
Front and rear suspension should significantly improve control on technical trails.
Hydraulic disc brakes should provide the control needed for technical trail riding.
The brake specification appears to include larger rotors, which can help braking power and heat management.
The 29-inch wheel size should help rollover and stability on technical terrain.
Torque is above average for this type of e-bike.
Torque-sensing assistance should help with smoother control on technical sections.
Multiple ride modes should help the rider manage assistance on technical trails.

Excellent rider information and controls

The included display or control unit should give useful ride information and control.

The included display or control unit should give useful ride information and control.
Multiple ride modes should give the rider more control over assistance levels.
Torque and cadence sensing should improve how precisely the bike responds to rider input.

Excellent smooth power delivery

Torque and cadence sensing should help the motor deliver more natural and controlled assistance.

Torque and cadence sensing should help the motor deliver more natural and controlled assistance.
Multiple ride modes should help riders choose a smoother level of assistance.
The included display or control unit should make it easier to manage assistance levels.

Excellent braking confidence

Hydraulic disc brakes should provide strong and controlled stopping power.

Hydraulic disc brakes should provide strong and controlled stopping power.
The brake specification appears to include larger rotors, which can help braking power and heat management.

Excellent trail control

The mountain bike format should feel well suited to trail riding.

The mountain bike format should feel well suited to trail riding.
Front and rear suspension should improve control on uneven trails.
Hydraulic disc brakes should improve control on loose or uneven trails.
The 29-inch wheel size should help rollover and stability on trails.
Torque is strong compared with similar e-bikes, which should help low-speed trail control.
Torque-sensing assistance should help with smoother power control on trails.

Good rough-road comfort

Front and rear suspension should significantly improve comfort on rough roads and uneven surfaces.

Front and rear suspension should significantly improve comfort on rough roads and uneven surfaces.
The larger wheel size should help roll over bumps and rough surfaces more smoothly.
The mountain bike format is generally better suited to rougher terrain.
Hydraulic disc brakes add useful control on rougher routes.
The bike weight may help it feel more planted over rough surfaces.
Frame material is listed as carbon fiber, which gives useful comfort and build context.

Good charging speed

Charging time is low compared with similar e-bikes.

Charging time is low compared with similar e-bikes.
The quoted charging time is long in absolute terms.

Useful removable battery

The removable battery makes charging, storage and battery handling more flexible.

The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.

Overview

The Giant Reign Advanced E+ 1 is a mountain bike built for trail riding, offering smooth motor support and confident braking for off-road adventures. Its carbon frame and dual suspension provide a comfortable ride over rough terrain, while the torque and cadence sensor ensures natural power delivery. The 560Wh battery offers decent range for most trips, and the 3.5-hour charge time makes it convenient to recharge. However, its lower motor power and battery capacity mean it may struggle on steep climbs or longer rides, requiring careful planning for extended use.

Best For

✓

This mountain e-bike should suit riders who prioritize off-road performance, trail control and comfort on rough terrain. Its hydraulic disc brakes, front and rear suspension, and responsive motor make it well-suited for trail riding and confident hill climbing. The removable battery adds flexibility for charging away from the bike, which is especially useful for riders who travel to remote areas. Riders who value a natural power response and predictable assistance will likely appreciate how the torque and cadence sensor works in tandem with the motor.

Who Should Avoid It

×

Riders seeking maximum range or a larger battery may want to compare alternatives, as this bike's range and battery capacity are below average for similar mountain e-bikes. Riders wanting the liveliest motor assistance may also find stronger options available next to rivals with higher motor power. However, the bike still suits riders who value smooth power delivery, confident braking, and controlled trail performance, especially for less extreme off-road conditions.

Ownership considerations

These points highlight practical ownership factors such as maintenance, storage, charging, everyday handling and bad-weather usability.

More maintenance likely

Poor

Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.

Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The carbon frame material can be lightweight, though damage checks may need more care.
The mountain bike format may involve more wear from rougher riding and more complex components.
A higher number of gears can add drivetrain complexity.
Front and rear suspension can add maintenance complexity.

Limited storage practicality

Poor

The frame does not appear to fold, so storage will depend more on size and weight.

The frame does not appear to fold, so storage will depend more on size and weight.
The removable battery can make storage and indoor charging more flexible.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.

Some lifting limitations

Weak

The bike weight is average for this type of e-bike.

The bike weight is average for this type of e-bike.
The listed weight is 23.9 kg.
The carbon frame material should help keep weight down.
The removable battery can reduce the weight when lifting or moving the bike.
The mountain bike format can be bulkier and harder to lift than simpler urban e-bikes.
The 29-inch wheel size can make the bike more awkward to lift or store.

Useful removable battery

Good

The removable battery makes charging, storage and battery handling more flexible.

The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.

Good charging speed

Good

Charging time is low compared with similar e-bikes.

Charging time is low compared with similar e-bikes.
The quoted charging time is long in absolute terms.

Low battery efficiency

Poor

Battery efficiency appears average for this type of e-bike.

Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 98.21.

Decent everyday equipment

Mixed

The included display or control unit adds useful ride information for daily use.

The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Multiple ride modes should help adapt the bike to different everyday journeys.
Hydraulic disc brakes are useful equipment for confident daily riding.
Payload capacity is average or better, which helps with bags, shopping or daily kit.

Mixed bad-weather practicality

Mixed

Hydraulic disc brakes should provide better control and confidence in wet conditions.

Hydraulic disc brakes should provide better control and confidence in wet conditions.
Built-in lights are not listed, so bad-weather visibility may depend on extra accessories.
The mountain bike format should offer useful control on rough or slippery surfaces.
Suspension can help control and comfort on rough, wet or uneven surfaces.
The bike weight may help it feel more planted in wet or windy conditions.
The wheel size should be workable for regular poor-weather riding, depending on tyre choice.
Frame material is listed as carbon fiber, which gives useful durability and maintenance context.

Limited family utility practicality

Poor

Payload capacity is average for this type of e-bike.

Payload capacity is average for this type of e-bike.
The listed maximum payload is practical for lighter utility use.
The listed maximum payload is 130 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.

Where to buy

Priced at £7,499, the Giant Reign Advanced E+ 1 sits towards the higher end of the mountain e-bike market for 2026 models. Its premium positioning reflects advanced components and performance, though buyers may want to weigh this against more affordable alternatives in the same category.

Compared with similar mountain bike e-bikes on Bikkerr, this model sits £1,840.93 above average

Lowest price now: £5,249.00 Best price ever seen: £5,249.00 Price drop detected Prices update every ~24 hours

Don’t miss a price drop Get an email when we detect a retailer lowering the price of this bike.

Best deal

£5,249.00
RRP ~~£7,499.00~~
↓ £2,250.00 (30.00%)

Giant UK

Giant Reign Advanced E+ 1

View deal

£6,499.00
RRP ~~£7,499.00~~
↓ £1,000.00 (13.34%)

Tredz

Giant Reign Advanced E+ 1

View deal

Last known price £7,499.00
Currently unavailable

Cyclestore

Giant Reign Advanced E+ 1

View deal

The Giant Reign Advanced E+ 1 is listed at £7,499, which sits at the higher end of the price spectrum when compared with similar mountain e-bikes from 2026. It offers strong torque support and hydraulic braking, which enhance control and confidence on rough terrain, and its front and rear suspension make it well-suited for off-road use. However, some similar e-bikes may provide a larger battery or more range, and others might feel more lively for their weight. For a mountain e-bike focused on trail comfort and control, the price is justified by its suspension, braking, and torque-sensing assistance, but buyers should weigh whether the more modest battery capacity and slightly heavier weight align with their riding needs. Riders prioritising comfort, control and a well-rounded off-road experience are more likely to see the value in this package.

We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.

33

The price/value label suggests this bike is expensive compared with similar options.

The listed price is GBP 7,499.

Against bikes from a similar release year, the price is expensive.

Torque is strong compared with similar e-bikes.

Hydraulic disc brakes add useful specification value.

Torque and cadence sensing adds value by improving assist control and ride feel.

A removable battery adds practical value for charging and storage.

The included display or control unit adds useful everyday value.

Front and rear suspension adds component value, especially for comfort or off-road use.

The bike has 10 or more gears, which adds useful drivetrain range.

The bike appears to be a recent or current model.

The release age is recent, which supports value if pricing is competitive.

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Potential limitations

Areas where this e-bike may be less strong based on its specs and comparisons.

0

Limited motor punch

Motor power is low compared with similar e-bikes.

Motor power is low compared with similar e-bikes.

Torque is above average for this type of e-bike.

Power-to-weight is low.

Torque-sensing assistance should make the motor response feel more natural.

The calculated power-to-weight score is 10.46.

0

Limited commuting practicality

The mountain bike format is less commuting-focused and may be less efficient for daily urban use.

The mountain bike format is less commuting-focused and may be less efficient for daily urban use.

Range is below average, but may still be usable for shorter commutes.

Charging time is average or better, which is useful for regular commuting.

Built-in lights are not listed, so commuting equipment may need adding.

A removable battery makes home, office or indoor charging easier.

The display or control unit should make it easier to monitor assist level and battery use.

Hydraulic disc brakes are a strong practical feature for daily riding.

Payload capacity is average for this type of e-bike.

Front and rear suspension can add weight and complexity for normal commuting.

0

Low power-to-weight ratio

Power-to-weight is low compared with similar e-bikes.

Power-to-weight is low compared with similar e-bikes.

Motor power is low compared with similar e-bikes.

The calculated power-to-weight score is 10.46.

0

Limited storage practicality

The frame does not appear to fold, so storage will depend more on size and weight.

The frame does not appear to fold, so storage will depend more on size and weight.

The removable battery can make storage and indoor charging more flexible.

A full-suspension mountain bike format is usually bulkier and harder to store indoors.

5

Not ideal for steep hills

Torque is above average for this type of e-bike.

Torque is above average for this type of e-bike.

Power-to-weight is low.

Motor power is low compared with similar e-bikes.

The torque-sensing assistance should help the bike respond more naturally on climbs.

The bike has 10 or more gears, which should help on varied climbs.

The calculated power-to-weight score is 10.46.

5

No built-in light advantage

Built-in lights are not listed, so separate lights may be needed.

Built-in lights are not listed, so separate lights may be needed.

The display or control unit may make light and ride-status management easier.

19

Low battery capacity

Battery capacity is below average for this type of e-bike.

Battery capacity is below average for this type of e-bike.

The listed battery capacity should be practical for regular riding.

27

Limited longer-ride suitability

Range is below average compared with similar e-bikes, so longer rides may need more planning.

Range is below average compared with similar e-bikes, so longer rides may need more planning.

Battery capacity is low compared with similar e-bikes.

Battery efficiency appears broadly average.

The removable battery can make charging easier during longer days or multi-stop rides.

Charging time is shorter than average, which can help if topping up between rides.

The display or control unit should make it easier to monitor assistance and battery use on longer rides.

E-system & battery comparison

Motor Power

250 watts

▼ 190 W below average

Motor Torque

85 Nm

▲ 6.5 Nm above average

Power-to-weight

10.46 W/kg

▼ 9.9 W/kg below average

Battery Capacity

560 Wh

▼ 71 Wh below average

Claimed Max Range

55 miles

▼ 5.5 miles below average

Charge Time

3h 30m

▼ 105 mins faster than average

Sensor Type

Torque and Cadence Sensor

Removable Battery

Yes

Motor Name

Giant Sync Drive Pro 3

This mountain e-bike offers a legal-style pedal assist with strong torque support that should feel natural and responsive on trails, particularly when climbing or navigating rough terrain. Next to similar models, it may feel a bit more modest in outright power and liveliness for its weight, but the torque and cadence sensor setup should help maintain control and predictability. The motor should provide solid support for climbing and low-speed technical sections, though some similar e-bikes may offer more immediate acceleration or punch. The sensor system and ride modes should allow for smooth, adjustable assistance that complements the bike’s trail-focused design. Riders looking for a balanced, controllable motor that prioritizes trail confidence over maximum speed may find this setup well-suited to their needs.

This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging time, sensor type and how those figures compare with similar e-bikes in our database.

eBike FAQs

Is this bike suitable for long off-road rides?

This bike is well-suited for off-road trails, thanks to its mountain bike design, dual suspension, and hydraulic disc brakes, which provide confident control on rough terrain. However, its lower motor power and battery capacity may limit performance on very long or steep rides, so you may need to plan for additional charging or shorter segments if you're aiming for extended off-road adventures.

How does the motor perform when climbing steep trails?

The motor provides smooth support for climbing steep trails, but its 250W power and 85Nm torque may struggle on very steep or technical sections. While the torque is above average for this type of e-bike, the lower motor power and battery capacity mean you may need to manage your effort and plan for longer climbs carefully. Hydraulic disc brakes should help maintain control, but the motor's assistance may feel less punchy compared to higher-powered models.

Does the bike handle rough terrain comfortably?

Yes, the Giant Reign Advanced E+ 1 handles rough terrain comfortably, thanks to its dual suspension system and hydraulic disc brakes, which provide good control and confidence on uneven trails. The carbon frame and suspension setup help absorb shocks, making it suitable for most trail conditions. However, its lower motor power and battery capacity may require careful planning for longer or more demanding rides.

Is the battery capacity enough for a full day of mountain biking?

The 560Wh battery should provide enough range for a full day of mountain biking, depending on how aggressively you ride and the terrain. However, it's below average for this type of e-bike, so you may need to plan for mid-day charging or carry a spare battery if you're tackling longer or more demanding trails. The 3.5-hour charge time is convenient, but the battery capacity means you'll need to manage your power usage carefully for extended rides.

How easy is it to charge and replace the battery?

The battery on the Giant Reign Advanced E+ 1 is removable, which makes it easy to charge at home or on the go. You can simply take the battery out and plug it into a charger, which should take around 3.5 hours to fully charge. This setup is convenient for trail riders who may need to recharge during multi-day trips or after a long ride.

Is this bike good value for its price compared to similar e-bikes?

The Giant Reign Advanced E+ 1 offers a solid set of features for a mountain e-bike, including smooth power delivery, strong braking, and a comfortable ride over rough terrain. However, its lower motor power and battery capacity compared to similar bikes may limit performance on steep climbs or longer rides. At £7499, it's positioned as a premium option, so buyers should consider whether the off-road capabilities and comfort justify the price compared to other mountain e-bikes in the same range.

How does the braking system perform on technical trails?

The Giant Reign Advanced E+ 1 features hydraulic disc brakes, which provide confident and controlled stopping power on technical trails. These brakes should handle rough terrain and varying weather conditions effectively, giving you the control needed for more challenging trails. However, braking performance will also depend on your riding style, trail conditions, and how well you manage your speed and momentum.

What are the main limitations of this e-bike for serious mountain bikers?

This e-bike is well-suited for trail riding, but it may struggle with very steep climbs or extended off-road sessions due to its lower motor power and battery capacity. The 250W motor and 560Wh battery provide adequate support for most trails, but serious mountain bikers looking for high-performance climbs or all-day rides may find the range and power limitations restrictive. However, the hydraulic disc brakes and dual suspension make it reliable for technical trails and rough terrain.

eBike Overview

eBike Type: Mountain Bike

The style of riding intended for this bike

Released: 2026

The bike was released this year

Screen

Giant RideControl GO (frame-integrated LED console)

Lights Included

No

Weight (inc battery): 23.9 kg

The website average for electric bikes is 22.99 kg. This electric bike is 0.90 kg over the average. Total bike weight may vary depending on frame size.

Sizing & Geometry

Min / Max Rider Height

S: 163–172 cm | M: 169–179 cm | L: 176–186 cm | XL: 183–193 cm

Adjustable Sizing

Adjustable saddle height

Folded Dimensions

n/a

Sizing Chart

View Sizing Chart

Wheel & Tire Details

Wheelset Name

Giant TRX 2 Hookless Wheel System (Carbon)

Wheelset Size

29 inch

Tires

Maxxis Assegai 29x2.5 / Maxxis Minion DHR II 29x2.4

Frame Info

Frame Material

Carbon Fiber

Suspension Type

Front and Rear suspension

Foldable Frame

No

Max Payload

130 kg (286.6 lbs)

Drivechain Details

Groupset details

SRAM X0 Eagle AXS 1x12; SRAM X0 Eagle cassette 10-52T

Drivechain type

Chain drive

Shifters

SRAM AXS Pod Controller (wireless)

Amount of gears

12 Gears

Rear Derailleur

SRAM GX Eagle Transmission

Front Derailleur

None

Cassette

SRAM GX Eagle Transmission (XS-1275), 10-52 T, 12-speed

Cranks

Praxis Performance Carbon e-crank arms with a SRAM Magic Wheel 36 T chainring

Chain

SRAM GX Eagle Transmission (Flattop)

Bottom Bracket

Integrated into the Sync Drive Pro 3 motor unit

Brakes

Brakes

SRAM Code RSC hydraulic disc, 220mm front / 200mm rear

Brake Type: Hydraulic Disc Brake

Hydraulic operated discs brakes (Very good)

Brake Rotors

220 mm diameter (front and rear)

Shifters

SRAM AXS Pod Controller (wireless)

Other Components

Saddle

Unknown

Handlebars

Unknown

Bar Tape

Unknown

Manufactures Info

Worldwide Shipping: Yes

Delivery across the globe!

Warranty: 2 Years

Limited warranty website average: 3.12 years

High-end carbon electric enduro bike delivering elite-level suspension and aggressive downhill capability.

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