CUBE Reaction Hybrid ONE 800

Cube Reaction Hybrid One 800 - sleek grey

£2,699

Bosch Performance CX (100Nm), SR Suntour XCM34 NLO Coil forks, 800Wh, Shimano CUES 10-speed derailleur, Shimano hydraulic brakes

CUBE Reaction Hybrid ONE 800 Electric Mountain Bike

The CUBE Reaction Hybrid ONE 800 is built for riders who want the freedom to explore further. To climb steeper trails and enjoy every journey with confidence. Combining a capable mountain bike design with powerful Bosch electric assistance, this e-MTB is ideal for daily rides, weekend adventures and demanding off-road routes.

At the heart of the Reaction Hybrid ONE 800 is a high-capacity 800Wh battery, giving you plenty of energy for longer rides and extended days on the trails. The battery is neatly integrated into the frame, helping create a clean appearance while keeping the bike practical and balanced.

The bike uses Bosch Performance Line CX 100Nm drive technology to provide strong, responsive assistance when you need extra power. Whether you are tackling a steep climb, riding into a headwind or carrying momentum across rough terrain, the motor helps make challenging sections feel more manageable.

A hardtail mountain bike frame gives the CUBE Reaction Hybrid ONE 800 a confident, efficient ride. Front suspension helps absorb bumps, roots and uneven surfaces, while wide, grippy tyres provide traction across a variety of trails and mixed terrain. The result is an electric mountain bike that feels at home on forest tracks, bridleways, gravel paths and everyday roads.

Key features

  • 800Wh Bosch battery for impressive range and longer adventures.
  • Bosch Performance Line CX 100Nm motor for powerful, natural-feeling electric assistance.
  • Hardtail MTB design for efficient pedalling and confident trail riding.
  • Front suspension to improve comfort and control over uneven ground.
  • Wide, high-traction tyres designed for stability across changing surfaces.
  • Practical CUBE frame design combining trail capability with everyday versatility.

The Reaction Hybrid ONE 800 also offers the practicality expected from a modern electric mountain bike. Its upright riding position provides a comfortable perspective on the trail, while the robust frame handles easily for regular use. From exploring local countryside to commuting across town, it can adapt easily to different types of riding.

If you are looking for a CUBE electric mountain bike with a large battery, capable Bosch motor and versatile hardtail setup, the Reaction Hybrid ONE 800 is an excellent option. It delivers the extra assistance needed to ride farther while retaining the familiar handling and adventurous character of a mountain bike.

Motor

Bosch Drive Unit Performance Line CX max. 100Nm (BDU38)
Battery

800Wh
Gears

Shimano Cues RD-U6000-GS, 10-Speed
Cassette

Shimano Cues CS-LG400 11-48T
Forks

SR Suntour XCM34 NLO Coil Tapered 15x110mm 100mm
Brakes

Shimano BR-MT200 Hydr. Disc Brake (180)
Wheel Size

29er (27.5" on small frame)
Tyres

Schwalbe Smart Sam, Active, 2.6
Colour

royalgreen'n'prism, sleekgrey'n'prism
Frame Size

15" (Small), 17" (Medium), 19" (Large), 21" (Extra Large)
All sizing information is a guide only. If you have any questions about bike sizing, our expert team is here to help. Call us on 01905 611774.

How do I measure my height?

With your shoes off, stand upright against a wall, with your shoulders back and legs together. Use a pencil to make a small mark on the wall above your head (make sure you hold the pencil parallel to the floor). Then measure from the floor to your mark, in centimetres or feet and inches.

How do I measure my inside leg length?

With your shoes off, stand upright with your back against a wall. Place a book/ruler between your legs, level with your crotch. Then measure from the floor to the top of the book/ruler, in centimetres or feet and inches (it’s easier if a friend helps).

Q & A

Do all brands of ebike use the same unit of measurement?

No. Most brands show sizing in centimetres, however some use a S/M/L system, and others use inches. The table above includes all of these variations to help you find the right size.

Which size should I go for if I'm in between those listed?

If your measurements suggest that you have a choice of two different sizes, then in the end it’s a personal choice. Here are some rules of thumb to consider: Touring/Trekking ebikes - choose the smaller size. It is possible to make a smaller frame bigger (for example, by raising the saddle or fitting a longer the stem), whereas if the frame itself is too big for you, it’s likely to be less comfortable and won't feel right. eMTBs - choose the larger size. You’ll find an eMTB with a slightly larger frame easier to handle than one that feels cramped. You can always fit a shorter stem if necessary to reduce the reach to the handlebars.

How are ebike frame sizes measured?

An electric bike’s frame size is calculated by measuring the distance from the top of the seat tube (where the seat post inserts), to the centre of the front chainring. Sizing Guide