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Cube Reaction Hybrid SLX 800 combines Bosch CX motor with 800Wh battery, Shimano XT 12-speed gears, Fox 34 suspension, and hydraulic disc brakes for confident trail riding.
Cube Reaction Hybrid SLX 800 combines Bosch CX motor with 800Wh battery, Shimano XT 12-speed gears, Fox 34 suspension, and hydraulic disc brakes for confident trail riding.
Cube

Cube Reaction Hybrid SLX 800 Electric Hybrid Bike 2025 in Nebula/Blue

£3,499.00
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With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Cube Reaction Hybrid SLX 800 Electric Hybrid Bike 2025 in Nebula/Blue

Season:2025

Brand:Cube

Code:808611nebulaBLU

When you're exploring new places, the last thing you want is to be worrying about your bike. That's why the Reaction Hybrid SLX 800 is equipped with Shimano's XT 12-speed gears and matching XT hydraulic disc brakes. Together, they offer easy use and exceptional reliability, so you can just concentrate on the ride. It's the same story with the Fox 34 AWL Float suspension fork, which combines smooth bump-swallowing comfort with excellent steering precision. The Bosch CX drive and 800 Wh PowerTube battery speak for themselves, offering quiet and unobtrusive pedal assistance for miles of smiles. The Newmen Performance 30 wheelset is shod with 2.6in Schwalbe Smart Sam tyres for excellent grip and ride comfort. And Cube even fitted a remote dropper post, for increased confidence on tricky trails. Where's your next adventure?.

Its looks are familiar, but the Reaction Hybrid's design details set it apart. With the 800 Wh PowerTube battery neatly concealed and the Bosch CX drive housed securely, its svelte lines disguise lots of clever features. It's PowerMore-ready, making it easy to add up to 250 Wh of extra battery capacity. The integrated seat clamp and cable routing complement the clean aesthetic, whilst a UDH gear hanger makes it as future-proof as possible. There's a built-in chainguide mount too, and it's also ready to accept ACID mudguards. And, with Size Split, it's easy to find the perfect fit for every rider. Cube have thought of everything, so you can just ride.

Key Features & Benefits:

  • Bosch Performance Line CX Motor:Smart system integration for seamless communication with your smartphone and customisation at your fingertips.
  • 12 Shimano Gears: 12-speed XT for lightweight precise performance for the long haul, Reliable, with a wide range of gears for all-terrain – even the biggest of hills.
  • Hydraulic Disc Brakes:Reliable braking performance to keep you fully in control, whatever the weather.

Full Specification:

  • Frame: AluminiumSuperlite, Gravity Casting Technology, Agile Ride Geometry, Boost 148, UDH™, Full Integrated Battery, Advanced Internal Cable Routing, Kickstand/Fender/Carrier Mounting Points, Integrated Seatclamp
  • Fork: Fox 34 Float AWL, 2-Position Sweep-Adjust RAIL Damper, Tapered, 15x110mm, E-Bike Optimised, 120mm (27,5: 100mm)
  • Motor: Bosch Performance Line CX Generation 5 (BDU38) 85Nm, from July 2025 up to 100Nm, Smart System
  • Battery: Bosch PowerTube 800
  • Controller: Bosch Kiox 300
  • Number of Gears: 12
  • Gear Shifters: Shimano XT SL-M8100-IR, 12-Speed
  • Chainset: Acid MTB Hybrid Pro, 38T
  • Chainrings: 38T
  • Rear Cassette: Shimano Deore CS-M6100, 10-51T
  • Chain: TBC
  • Rear Derailleur: Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed
  • Pedals: Acid PP MTB
  • Rims: Newmen Performance 30
  • Front Hub: 15x110mm
  • Rear Hub: 12x148mm
  • Front Tyre: Schwalbe Smart Sam, Performance, Kevlar, 2.6
  • Rear Tyre: Schwalbe Smart Sam, Performance, Kevlar, 2.6
  • Brakes: Shimano XT BR-M8120, Hydr. Disc Brake (203/203)
  • Handlebars: Cube Rise Trail Bar 35
  • Handlebar Grip: Acid React Pro
  • Headset: Acros AZF-1034, ICR (Integrated Cable Routing) Zero-Stack 1 1/2" (ZS 56mm), Bottom Zero-Stack 1 1/2" (ZS 56mm), X-Connect Interface
  • Stem: Cube Performance Stem E-MTB 35, FPI-Link
  • Saddle: Acid Sequence Pro 160
  • Seatpost: Cube Dropper Post, Handlebar Lever, Internal Cable Routing, 31.6mm
  • Accessories: N/A
  • Weight: 24 kg

Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

If you are unsure which size Cube bike would be best for you, Cube do provide an online sizing calculator on each bike product page, which requires you to enter your height and inside leg. This can give a recommendation on which size may be best for you, however for the best results, please visit your local Balfe’s store for a personal consultation and test ride.

Geometry for Cube Reaction Bosch Gen 4 Motor/Battery

15" / 27.5 / S17" / 29 / M19" / 29 / L21" / 29 / XL23" / 29 / XXL
Length seat post350350350400400
Diameter seatpost30.930.930.930.930.9
Angle stem1212121212
Crank length175175175175175
Diameter tire maximum720762762762762
Width tire maximum6868686868
Stem length6040506060
Handlebar width740740740740740
Seat tube380405450495545
Top Tube Horizontal565628628645672
Seat angle7574747474
Head tube angle6767.567.56868
Chainstays447460460460460
Head tube120122122132149
Wheelbase1134.61196119612081236
BB-Height to Hub4565656565
Protrusion height - 80mm756762768781821
Reach400.4444442456478
Stack614.3646651662678

Geometry for Cube Reaction Bosch Gen 3 Motor/Battery

14" / 27.5 / XS16" / 27.5 / S18" / 29 / M20" / 29 / L22" / 29 / XL24" / 29 / XXL
Length seat post350350350350350350
Diameter seatpost30.930.930.930.930.930.9
Angle stem121212121212
Crank length175175175175175175
Diameter tire maximum716716754754754754
Width tire maximum606060606060
Stem length505060607070
Handlebar width740740740740740740
Seat tube340370420470515565
Top Tube Horizontal555575595615635655
Seat angle73.573.573.573.573.573.5
Head tube angle67.568.568.568.568.568.5
Chainstays466466488488488488
Head tube110110110120140155
Wheelbase111611251169.61190.51212.31233.6
BB-Height to Hub464655555555
Protrusion height - 80mm722.2740.8801.5809.9811.1848.3
Reach376.5395407424.6439.1455.1
Stack602.5607.5634643661.5675.5

Warranty Information for Cube:

Your CUBE bike is warranted to be free from manufacturing defects for 2 years with effect from the date of sale. In addition, we provide our customers with the following warranty in the event of frame breakage outside the statutory warranty period as follows:
For all frames and rigid forks from model year 2012 and onwards Cube guarantee from the date of sale from the dealer:
Aluminium: 6-year guarantee
Carbon fibre, aluminium-carbon fibre: 3-year guarantee
If a break occurs during this period (from date of sale), Cube will replace the item with the same or similar.
BOSCH Warranty (E-Bikes): The warranty period is 24 months.
For full warranty policy please visit cube.eu

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