This product is best for: Riders wanting a Bosch-powered hardtail e-MTB for trails, hills, longer rides and mixed everyday use.

The main advantage is: A Bosch Performance Line CX drive unit, 800Wh battery and capable trail components in a versatile hardtail platform.

Choose this if: You want strong climbing assistance, long battery capacity and lower-maintenance hardtail simplicity.

This product is not ideal for: Riders specifically looking for full-suspension comfort on rough enduro trails or a lightweight non-electric XC bike.

The Cube Reaction Hybrid Pro 800 2027 combines the versatility of a hardtail mountain bike with Bosch electric assistance. Its Aluminium Superlite frame houses the Bosch PowerTube 800 battery internally and uses CUBE's Agile Ride Geometry, Boost rear spacing and advanced internal cable routing.

The Bosch Performance Line CX drive unit delivers a maximum 120Nm, while Shimano's wide-range 12-speed drivetrain provides the gearing needed for steep climbs and mixed terrain. A RockShox Recon Silver RL air fork, Shimano four-piston hydraulic disc brakes and Schwalbe Smart Sam 2.6-inch tyres give the bike the equipment needed for trail riding and year-round use.

Best For

Trail centres, bridleways, forest tracks, hilly routes, longer leisure rides, commuting over mixed surfaces and riders wanting one e-bike that can cover both recreational and practical duties.

Who Is This For

The Reaction Hybrid Pro 800 suits riders who want the climbing support and range of a Bosch e-bike without the additional complexity of rear suspension. It is particularly suitable for mixed trail and everyday riding where versatility matters.

Rider Profile

Ideal for new and experienced e-bike riders who want capable off-road handling, strong hill-climbing support and a practical hardtail platform that can also accept touring accessories.

How This Fits Your Setup

The Reaction Hybrid Pro can serve as a dedicated trail e-bike or a versatile all-rounder. CUBE includes mounting points for compatible mudguards, luggage carrier and kickstand, and X-Connect provides a straightforward route to adding a compatible ACID front light.

Browse our electric mountain bike range or explore more Cube bikes.

Key Features

• Bosch Performance Line CX drive unit with maximum 120Nm
• Bosch PowerTube 800Wh battery
• Bosch Purion 200 integrated display and remote
• RockShox Recon Silver RL air suspension fork
• Shimano XT 12-speed rear derailleur
• Shimano 4-piston hydraulic disc brakes with 203mm rotors
• ACID SLX 30 tubeless-ready wheelset
• Schwalbe Smart Sam 2.6-inch tyres
• Remote-operated CUBE dropper seatpost
• PowerMore-ready frame
• X-Connect compatible lighting interface
• Mudguard, luggage carrier and kickstand mounting points

Real-World Performance

The Bosch Performance Line CX system is designed for demanding e-MTB riding and provides strong assistance on steep gradients. Paired with the 800Wh PowerTube battery, the Reaction Hybrid Pro is set up for riders covering longer distances or routes with repeated climbing.

The RockShox Recon Silver RL air fork adds adjustable suspension performance over rough tracks, roots and broken surfaces. Shimano BR-MT420 four-piston brakes use 203mm rotors at both ends to provide braking control on steeper trails and for the additional mass of an e-bike.

The Shimano XT rear derailleur works with a 10-51T cassette to provide a broad range of ratios, while the supplied dropper post allows the saddle to be lowered from the handlebar for descents and technical sections.

Usage Scenarios

• Trail-centre and woodland riding
• Steep and hilly routes
• Bridleways and gravel tracks
• Longer recreational e-bike rides
• Mixed road and off-road journeys
• Everyday use with optional mudguards, carrier and kickstand

Comparison

Compared with the lower Reaction Hybrid ONE and Performance models, the Pro 800 adds the larger 800Wh battery, Bosch CX drive, Shimano XT rear shifting, four-piston brakes and a dropper post. Compared with higher Reaction Hybrid Race and SLX models, it retains the same core 800Wh Bosch-powered platform but uses a more value-focused suspension and component package.

Compared with a full-suspension electric mountain bike, the Reaction Hybrid Pro is mechanically simpler and efficient on smoother terrain, but it does not provide rear suspension comfort on rough technical descents.

Comparison Within the Range

Lower model: Cube Reaction Hybrid ONE 720 — a simpler Bosch CX-equipped entry into the Reaction Hybrid range with a smaller 720Wh battery.

Current model: Cube Reaction Hybrid Pro 800 — Bosch CX, 800Wh PowerTube, Shimano XT rear derailleur, RockShox air fork, four-piston brakes and dropper post.

Higher model: Cube Reaction Hybrid Race 800 — moves further up the range with an upgraded component package while retaining the 800Wh Bosch-powered platform.

Buy this if: You want the 800Wh battery, Bosch CX power and trail-focused essentials without moving into the higher Reaction Hybrid specifications.

Choose the lower model if: Your riding is less demanding and you do not need the Pro's combination of larger battery, four-piston brakes and dropper post.

Upgrade if: You want higher-tier suspension, drivetrain or braking components.

Pros and Cons

Pros: Bosch CX drive, 800Wh battery, Shimano XT rear shifting, four-piston brakes, air suspension, dropper post, tubeless-ready wheels and useful accessory compatibility.

Cons: Hardtail design does not provide rear suspension on rough terrain, and the bike is heavier than an equivalent non-electric hardtail.

Quick Spec Summary

Brand: Cube
Model: Reaction Hybrid Pro 800
Model Year: 2027
Colour: Silverdust/Prism
Category: Electric Hardtail Mountain Bike
Frame: Aluminium Superlite
Motor: Bosch Performance Line CX, Maximum 120Nm
Battery: Bosch PowerTube 800Wh
Remote/Display: Bosch Purion 200
Fork: RockShox Recon Silver RL Air
Drivetrain: Shimano 12-Speed with XT Rear Derailleur
Brakes: Shimano BR-MT420 4-Piston
Manufacturer Weight: 25.9kg

Detailed Specifications

Geometry

CUBE publishes geometry for the S, M, L and XL variants associated with this frame listing.

Ergonomics

Is This the Right Product?

Choose the Reaction Hybrid Pro 800 if you want a Bosch-powered electric hardtail with enough battery capacity and equipment for trail riding, hills and longer mixed-surface routes.

Who should not buy this: Riders who regularly ride rough enduro terrain may benefit from a full-suspension e-MTB, while riders mainly using smooth roads may prefer a trekking or hybrid e-bike.

Upgrade Potential

The supplied specification already includes an air fork, dropper post and tubeless-ready wheels. Riders can convert to tubeless with compatible tyres and setup, add a Bosch PowerMore range extender where compatible, or equip the bike with CUBE/ACID mudguards, carrier, kickstand and an X-Connect front light.

What You'll Need

For trail use, consider a suitable MTB helmet, gloves, hydration, compact pump, spare tube or tubeless repair kit and multitool. For commuting or touring, compatible lights, mudguards, kickstand and luggage carrier can make the bike more practical.

Alternative Products

Looking for a simpler option?
Cube Reaction Hybrid ONE 720 — a lower-positioned Reaction Hybrid model with Bosch CX assistance and a smaller battery.

Want a higher specification?
Cube Reaction Hybrid Race 800 — keeps the 800Wh Bosch platform while moving further up the component range.

Want more trail comfort?
Browse our electric mountain bikes to compare hardtail and full-suspension e-MTB options.

Our Take

The Reaction Hybrid Pro 800 is a strong all-rounder within CUBE's electric hardtail range. The combination of Bosch CX assistance, an 800Wh battery, XT rear shifting, four-piston brakes, an air fork and a dropper post covers the features most trail riders are likely to value without moving into the higher-priced Race or SLX builds.

Its accessory mounts are also important: the same bike can be adapted for commuting, touring or everyday use when required.

Popular Questions

Customers commonly ask about Bosch motor torque, battery capacity, charging, suspension travel, dropper-post specification, PowerMore compatibility, wheel setup and whether the Reaction Hybrid Pro is suitable for both trails and everyday riding.

FAQ

What motor does the Cube Reaction Hybrid Pro 800 use?

It uses the Bosch Performance Line CX drive unit, BDU38, with a manufacturer-listed maximum torque of 120Nm.

What battery is fitted?

A Bosch PowerTube 800 battery.

What display does it use?

The bike uses the Bosch Purion 200 with integrated display.

What charger is supplied?

CUBE lists a Bosch 2A charger.

What suspension fork is fitted?

A RockShox Recon Silver RL Air fork with 100mm travel on the manufacturer-listed frame variant.

What drivetrain does it use?

It uses a Shimano XT RD-M8200-SGS 12-speed rear derailleur with Shimano Deore shifter and 10-51T cassette.

Does it have four-piston brakes?

Yes. Shimano BR-MT420 hydraulic disc brakes are fitted with 203mm rotors front and rear.

Does it have a dropper post?

Yes. A handlebar-operated CUBE dropper post is supplied.

Are the wheels tubeless ready?

Yes. The ACID SLX 30 wheelset is listed as tubeless ready.

Can a range extender be fitted?

The frame is PowerMore-ready for a compatible Bosch PowerMore range extender.

Can I fit mudguards, a carrier and a kickstand?

Yes. CUBE provides mounting points for compatible mudguards, luggage carrier and kickstand.

Can I add a front light?

The frame includes CUBE X-Connect for compatible ACID front lights.

What is the maximum rider weight?

CUBE lists a maximum rider weight of 125kg, including clothing and equipment worn on the rider's body.

Can I get help choosing the correct size?

Yes. Use our Online Bike Sizing Calculator or our Professional Bike Fitting Service.

Is Click & Collect available?

Yes. Click & Collect is available from CycloMonster.

Ownership Experience

The hardtail layout reduces suspension maintenance compared with a full-suspension e-MTB, while the Bosch Smart System, Shimano drivetrain and hydraulic brakes are designed around established e-bike components.

The 800Wh battery can be charged on or off the bike through CUBE's Modular Battery System, and the integrated frame design protects the battery inside the down tube. Regular drivetrain cleaning, brake checks and suspension servicing will help maintain performance.

Local Riders

If you're looking for a bike shop near Derby for a Cube electric mountain bike, CycloMonster at 76 Derby Road, Spondon, Derby, DE21 7LX offers local support for riders from Derby, Nottingham, Burton upon Trent, Loughborough and Chesterfield.

Local Availability

Order online with Click & Collect or visit in-store for sizing and e-bike setup advice. Ongoing maintenance and Bosch e-bike support are available through our workshop services.

Bike Sizing Guidance

Choosing the correct size improves comfort, control and handling.

CUBE publishes geometry and frame-size information for the Reaction Hybrid Pro 800, but the product data used here does not provide rider-height recommendations.

Manufacturer-listed sizes: Small, Medium, Large and XL.

Use our Online Bike Sizing Calculator for a personalised recommendation.

For additional advice, use our Professional Bike Fitting Service.

Why Buy

Choose the Cube Reaction Hybrid Pro 800 2027 if you want Bosch CX power, an 800Wh battery and a complete trail-ready hardtail specification that includes air suspension, four-piston brakes and a dropper post. Its accessory compatibility also makes it easy to adapt for touring or everyday riding.

Explore Further with the Cube Reaction Hybrid Pro 800

Order the Cube Reaction Hybrid Pro 800 2027 Silverdust/Prism online or visit CycloMonster for sizing advice, Click & Collect, Bosch e-bike setup support and ongoing workshop servicing.