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Cube Reaction Hybrid SL 500 Kiox 2019 Bosch

£2,899.00 Sold Out

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Who is this bike suitable for?

The new Cube Cube Reaction Hybrid SL 500 Kiox 2019 is built for riders wanting to explore both on and off road. The fast rolling wheels roll well on tarmac, whilst the 100mm 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 Bosch Performance CX System and integrated PowerTube 500Wh battery, the Cube Reaction Hybrid SL 500 Kiox 2019 is ready to take you further.

Updated for 2019, Rockshox have released a brand new boost specific chassis for their ever popular Judy Gold fork. The new chassis has been build for the demands of modern riding, offering a stiff and lightweight fork in a capable package.

The Boost chassis also means better clearance for plus tires, allowing the Judy Gold forks to accommodate tires up to 2.8".

The forks are fully air adjustable, so can be set to the riders weight with a shock pump.

Rockshox Forks on Cube Reaction SL 500 Kiox 2019

Cube have spec'd the Reaction Hybrid SL 500 Kiox 2019 with Shimano's new MT520 four piston hydraulic disc brake on the front and the MT500 two piston caliper on the rear. The four piston caliper gives additional braking power to the front where more braking force is needed. 

 These brakes offer solid performance with easy reach adjustment and are paired with 180mm discs to have you covered on the steeper terrain.

Shimano Brakes on Reaction SL 500 Kiox 2019

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.

The Cube Reaction Hybrid SL 500 2019 grips the trail with 2.6" Schwalbe Nobby Nic tyres. These tires offer an excellent tread pattern for all round riding.

The Plus tyres give a wider footprint, whilst running lower pressures to offer superb cushioning & all round trail comfort.

Cube have used their own factory rims laced onto Shimano boost hubs. These 30mm wide rims offer an excellent tire profile for wider tires.

Cube has designed the Reaction Hybrid SL 500 Kiox to be thoroughly up to date for 2019, with internal routing for all cables including the option for fitting a stealth dropper post. The integrated PowerTube battery is protected by a metal battery cover for additional protection and the frame even has water bottle boss mounts on the downtube and seat tube for those longer rides. 

The Reaction Hybrid SL 500 Kiox 2019 is equipped with Shimano's XT M8000 11 speed rear derailleur.

The XT setup offers a huge range of gearing from 11 to 46 teeth at the rear with Shimano's new wider range cassette.

This offers excellent ratios for both climbing & picking up speed on long flat areas. The gearing is both responsive and crisp, meaning you can focus on the ride.

The M8000 derailleur features Shimano's Shadow Plus one way friction clutch to reduce chain slap, helping to keep things quiet and efficient over rougher terrain.

Shimano XT gears on Reaction SL 500 Kiox 2019

The Cube Reaction SL 500 Kiox 2019 will be popular for many looking for an every day XC trail bike, with keen pricing with a well thought out spec. The Cube Reaction is also offered in the lower spec Reaction Hybrid Pro 500, which still features the Bosch Performance CX system with a 500Wh battery.

2019 Bosch InTube Battery System on Cube eBikes

Bosch CX & Kiox eBike System

The new Cube Reaction Hybrid SL 500 Kiox 2019 eBike features the latest Bosch Performance CX crank drive motor, so you can be sure it's fitted with the latest kit and setup for optimum performance.

The 250w CX system outputs 75Nm of torque & peaks at 500w! It certainly packs a punch, it will also offer up to 300% 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 Cube Reaction Hybrid features new 'PowerTube' Bosch 500Wh battery technology for 2019 which is completely integrated into the frame. Cube have neatly designed it so it can be charged both on & off the bike.

The 2019 Bosch Kiox display is neat & compact with a super crisp resolution LCD display screen. The Bosch Kiox display offers all the rider credentials in a neat and easy to read user interface. Riders can see important factors like speed, distance and battery range on the screen. The newly designed 2019 control buttons, sit to the left of the bars to allow scrolling of this 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 SL 500 Kiox 2019

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


RockShox Judy Gold Air, 100mm


Shimano BR-MT520/BR-MT500 Hydraulic disc brakes, 180mm rotors


Shimano SLX M7000, 11-Speed

Rear Mech

Shimano XT M8000, ShadowPlus, 11-Speed


Shimano SLX CS-M7000, 11-46T


KMC X11e, EcoProTeQ


Cube Ex30 Rims laced on Shimano Boost Centerlock hubs


Schwalbe Nobby Nic, 2.60"


Newmen Evolution, 760mm, 31.8mm


Newmen Evolution, 31.8mm




Newmen Evolution, 30.9mm


Natural Fit Active Race


22.8 kg

Electric Bike Specifications


Bosch Lithium Ionen 36 Volt, 500 Wh, with InTube Integration


Bosch Kiox


Bosch Performance CX 36 Volt, 250 Watt. 50 - 300% Assist, 75Nm


30-140 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 SL 500 Kiox 2019 is available in frame sizes - SOLD OUT.

Note the 40cm and 45cm frame sizes are with 27.5" Wheels. Whereas the other sizes are with 29" wheels. 

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 SL 500 Kiox 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 CX eBike System Overview - Bosch CX Performance System Product Brochure

Bosch eBike User Manual - Bosch eBike Performance CX 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.

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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.