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Cube Reaction Hybrid EX 625 2020 Bosch

£2,599.00 Sold Out

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Who is this bike suitable for?

The new Cube  Reaction Hybrid EX 625 2020 is built for riders wanting to explore both on and off road. The fast 29" wheels roll well on tarmac, and the 120mm suspension and Plus tyres come into their realm on forest tracks, paths and trails. 

I was skeptical I could ascend a local very steep hill sitting down but I did and in torrentially wet conditions. The ability to have traction and ‘accelerate’ through hairpin bends whilst ascending is unique, as is the lower center of gravity which feel much safer and more controlled on steeper descents. All in all it is an amazing piece of kit.

New Features

With the newest Gen 4 Bosch Performance CX System and a 625Wh battery, The Cube Reaction Hybrid EX 625 2020 is ready to take you further.

Equipped with Schwalbe's large volume 2.6" Smart Sam tires, these tires have a tight central pattern for excellent rolling speed, offering reliable grip on a mix of terrain including the road.

The shoulders of the tire have wider spacing with a more aggressive tread to optimise off road grip during cornering, making them a solid all rounder.

With the larger volume of Plus tires, this allows for the tires to be run at higher pressures for faster rolling on road, or alternatively lower pressures for comfort and a wider footprint to improve grip off road.

Smart Sam tires on Cube Reaction EX 625 2020

Suntours XCM34 coil front fork helps to soak up the rough terrain, keeping the steering precise. These feature a 15mm axle for improved stiffness and preload adjustment.

Cube have spec'd the Reaction Hybrid EX 625 2020 with Shimano's MT420/MT400 hydraulic disc brakes, which feature a four pot caliper up front and a twin pot rear for high modulation and power.. These are paired with a 203mm rotor up front and a 180mm rear for consistant braking performance.

Shimano MT420 Brakes on Cube Reaction EX 625 2020

You can be sure they'll stop you as quickly as you accelerate on this eBike. Minimal maintenance and fuss.

Aside from changing the brake pads from time to time you can fit & forget.

Cube have used their own factory rims onto the Reaction Hybrid EX 625 for 2020 with Shimano boost hubs and 29"  rims. These 30mm wide rims offer an excellent tire profile for wider tires.

The wider boost hubs improve the bracing angles for the wheels spokes, improving the wheels strength and stiffness.

Cube has designed the Reaction EX 625 to be thoroughly up to date for 2020, with internal routing for all cables, including the option for a stealth dropper post. The new 625wh Bosch PowerTube battery is neatly integrated into the frame using Cubes Modular Battery System, which is designed to securely hold the battery keeping it rattle free.

The batteries locking assembly is hidden underneath the impact resistant cover to avoid dirt ingress.

The 2020 Cube Reaction Hybrid EX 625 eBike is equipped with the new Sram SX Eagle 12-speed groupset.

The X-HORIZON design reduces chain slap and the shifting force offering a smooth reliable setup.

You'll notice the huge 12 speed cassette which offers an incredible 11 to 50t for both up and down hill, offering a gear range of 500%.

Whilst being Srams entry level 12 speed groupset, the SX Eagle delivers an excellent shifting experience with a reliable roller clutch and the ever useful Cage Lock to ease wheel removal or fitting. 

Sram SX Eagle on Cube Reaction EX 625 2020

The Cube Reaction Hybrid EX 625 2020 will be popular for many looking for an every day XC trail bike, with keen pricing with a well thought out spec. The large 625Wh battery capacity offers excellent range whilst the new Gen 4 Performance CX motor is half the size of the original CX and 1.3kg lighter. 

2002 Bosch Performance Cx System on Cube eBikes

Bosch CX & Purion eBike System

The new Cube Reaction EX 625 2020 eBike features the new Gen 4 Bosch Performance CX crank drive motor, so you can be sure it's fitted with the latest kit & setup for optimum performance.

The 250w CX system outputs 75Nm of torque & peaks over 500w! It certainly packs a punch, it will also offer up to 340% assistance in turbo mode.

Featuring 4 levels of assistance & remember you can always turn the power off and ride it as a normal bike! In addition, the new eMTB mode allows the user to set in one assistance mode and the system itself will determine the assistance offered. 

The Reaction EX 625 features new 'PowerTube' Bosch 625Wh battery technology for 2020. Completely integrated into the frame, Cube have neatly designed it so it can be charged both on & off the bike. 

The 2020 Bosch Purion display is neat & compact. Riders can see important factors like speed, distance and battery range on the screen.

Whats included?


This electric bike comes fully set-up by our workshop technicians. You can be sure that every aspect of the eBike has been dialled in for optimum performance. All our electric bikes arrive with a user manual, keys, charger & free follow up service within 3 months.

Warranty support on the Cube Reaction Hybrid EX 625 2020

Our electric bikes also include a 5yr warranty on the frame, 2yr warranty on all the electrics & 1yr warranty on the components. In the event of a problem, we handle all warranty claims in-house. We can also offer worldwide support for customers further afield using a laptop or PC connected to the internet, combined with our diagnostic equipment.

E-bikeshop is a UK Bosch Electric Bike Service Center and our in house workshop is now exclusively reserved for our own eBike customers. We also have parts / spares to hand should they be required.

*Range is dependant on many factors inc rider weight, wind, hills, terrain etc. For a better estimate, please use our range calculator. 

Free Electric Bike Insurance Cover

FREE 14 Days Electric Bike Cover

We've exclusively teamed up with Bikmo to offer 14 days free electric bike insurance when you purchase your new electric bike with

You'll be covered for eBike theft, accessories, crash damage, clothing/headgear, accidental damage, public liability and Bikmo will even cover the cost of getting you home as a result of damage or theft.

The perfect package to get you started with your new eBike without the need for any worry or hassle. Of course, you'll have the no obligation option to continue your insurance over after the initial period.

To get this exclusive special offer, simply tick the checkbox in the checkout. 

*You must meet all of the standard Bikmo eligibility criteria and understand the Bikmo locking requirements. You can find this info on the dedicated page here

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General Bike Specifications


Cube Aluminium Superlite Frame


SR Suntour XCM34 Coil, 120mm


Shimano BR-MT420/MT400 hydraulic disc brakes, 203/180mm Rotors


Sram SX Eagle, 12-Speed

Rear Mech

Sram SX Eagle, 12-Speed


Sram PG-1210 Eagle, 11-50T


Sram SX Eagle


Cube Ex30 Rims laced on Shimano Centerlock boost hubs


Schwalbe Smart Sam, Active, 2.60"


Cube Rise Trail Bar, 700mm


Cube Performance Stem Pro, 31.8mm


FSA Orbit 1.5B ZS


Cube Performance Post, 30.9mm


Natural Fit Sequence


23.1 kg

Electric Bike Specifications


Bosch Lithium Ionen 36 Volt, 625Wh, with BMS Management


Bosch Purion Display / Integrated Buttons


Bosch Performance CX 36 Volt, Gen 4, 250 Watt. 50-340% Assist, 75Nm


30-160 miles of power assisted range, depending on terrain

Further Information


The most frequently asked questions on this eBike -

These questions relate to this bike. You can find a full F.A.Q on general eBike & website questions by clicking here.

What sizes is this bike available in?

The Cube Reaction Hybrid EX 625 2020 is available in sizes - SOLD OUT.

Is this bike in stock now?
The stock status is shown at the top of this page next to the price. If the stock level is shown as 'Pre-Order' this means it is a new model arriving soon, you can see an expected date at the top of each bike description.

Are there any colour options?
The Cube Reaction Hybrid EX 625 2020 bike is held in stock in the colour shown. However we may be able to order alternative colours on request, subject to availability. 

Where can I find a geometry chart of this bike?
You can find the geometry chart of each bike by clicking on the 'Downloads' tab of each bike.

Where is this bike made?

Can I try the bike before I buy?
Yes of course, you can visit, we can talk you through your riding style and requirements and offer expert advice as to which model to select. We will be able to advise particular eBikes and talk them through in more detail. We also give you the opportunity to ride crank drive bikes so you can get a feel for them prior to purchase. 

At e-bikeshop we work by appointment only, so we can talk to each customer on an individual basis to give the best advice possible. If you like the bike, you have the option to take it away there and then with any accessories selected fitted and a full fitting session on the bike itself. We ask you to go for a short ride on the bike to make sure you are happy with the setup and also able to answer any operational questions you may have. 

If you cannot find the answer you are looking for, please do not hesitate to get in touch.
Remember you can find a full F.A.Q on general electric bike & website questions by clicking here.

The following links will open PDF files in a new tab -


Bosch eBike Purion Display Manual - Bosch Purion Display User Manual

Cube Bike Manual - Cube Bicycle Handbook Manual

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Finance Options

The prices below do not include any additional products, product options or shipping costs.
To pay by finance select the finance option during the checkout process.
Finance is only available for UK residents.

Finance Options
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The above values are best estimates, Final pricing will be confirmed on the V12 Retail Finance application. The UK Electric Bike Company Ltd is registered in England and Wales 08775019. Registered office: 12 Borelli Yard, Farnham, Surrey, GU9 7NU. The UK Electric Bike Company Ltd acts as a credit broker and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. The UK Electric Bike Company Ltd is authorised and regulated by the Financial Conduct Authority. Our firm reference number is 659966. Credit provided subject to age and status.