Cube Reaction Hybrid SLX 800 2025 - Electric Mountain Bike
The Cube Reaction Hybrid SLX 800 is a hardtail e-MTB designed to open up new trails, longer rides, and more technical terrain. Built with Cube’s advanced aluminium Superlite frame, it features Gravity Casting Technology, seamlessly integrating the Bosch PowerTube 800Wh battery for a sleek and refined look. Internal cable routing keeps things clean and low-maintenance, while the Agile Ride Geometry ensures confident handling across varied terrain.
Key Features:
- Frame: Aluminium Superlite with Agile Ride Geometry and integrated battery.
- Fork: Fox 34 Float AWL, 120mm travel (100mm on 27.5"), e-bike optimised.
- Drivetrain: Shimano XT 12-speed with ShadowPlus rear mech for crisp shifting.
- Brakes: Shimano XT BR-M8120 hydraulic disc brakes, 203mm rotors.
- Wheels: Newmen Performance 30, tubeless-ready, Boost 148 spacing.
- Tyres: Schwalbe Smart Sam 2.6" Kevlar for grip and durability.
- Dropper Post: Cube Dropper Post with handlebar lever for on-the-fly adjustments.
- Finance: Available with 0% APR finance.
Drive Information:
- Motor: Bosch Performance Line CX Smart System, 85Nm torque.
- Battery: Bosch PowerTube 800Wh for long-range riding.
- User Interface: Bosch Kiox 300 display with Smart System integration.
The Fox 34 Float AWL suspension fork is e-bike optimised, offering 120mm of plush travel (100mm on 27.5” models), helping to soak up rough terrain while maintaining precise control. Combined with Shimano’s XT 12-speed drivetrain, you get smooth, reliable shifting and a wide gear range to tackle any climb or descent with ease.
Braking power is handled by Shimano XT BR-M8120 hydraulic disc brakes, paired with 203mm rotors front and rear. Whether you're descending fast trails or riding in wet conditions, these four-piston brakes deliver confident, controlled stopping power.
The Newmen Performance 30 wheels are tubeless-ready, allowing for lower pressures and increased grip, while Schwalbe Smart Sam 2.6" tyres offer a balanced mix of speed and traction.
A Cube Dropper Post lets you adjust your saddle height on the go, making steep descents easier and more controlled. The Bosch Kiox 300 display provides real-time ride data, navigation, and smart connectivity, while the Performance Line CX motor delivers 85Nm of torque, ensuring smooth and powerful assistance across all terrains.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Aluminum Superlite, 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 Optimized, 120mm (27,5: 100mm) |
| Headset | ACROS AZF-1034, ICR (Integrated Cable Routing), Top 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 |
| Bars | CUBE Rise Trail Bar 35 |
| Front Brake | Shimano XT BR-M8120, Hydr. Disc Brake (203/203) |
| Rear Brake | Shimano XT BR-M8120, Hydr. Disc Brake (203/203) |
| Rear Mech | Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed |
| Shifters | Shimano XT SL-M8100-IR, 12-Speed |
| Speed | 12 |
| Rims | Newmen Performance 30, 28/28 Spokes (Light/Base), 15x110mm / 12x148mm, Tubeless Ready |
| Front Tyre | Schwalbe Smart Sam, Performance, Kevlar, 2.6 |
| Rear Tyre | Schwalbe Smart Sam, Performance, Kevlar, 2.6 |
| Seat Post | CUBE Dropper Post, Handlebar Lever, Internal Cable Routing, 31.6mm |
| Saddle | ACID Sequence Pro 160 |
| Chainset | ACID MTB Hybrid Pro, 38T |
| Cassette | Shimano Deore CS-M6100, 10-51T |
| Pedals | ACID PP MTB |
| Battery Size (WH) | Bosch PowerTube 800 |
| Motor | Bosch Drive Unit Performance Line CX, Smart System |
| User Interface | Bosch Kiox 300 |
Cube Reaction Hybrid 2025 Size Chart
|
Size |
Height (cm) |
Height (in) |
|
S - 15" |
160 - 170 |
5'5" - 5'7" |
|
M - 17" |
168 - 175 |
5'6" - 5'9" |
|
L - 19" |
175 - 185 |
5'9" - 6'1" |
|
XL - 21" |
185 - 190 |
6'1" - 6'3" |
|
XXL - 23" |
190 - 196 |
6'3" - 6'5' |
What size frame do I need if I am between sizes? - read here
Cube Reaction Hybrid 2025 Geometry Chart
| Size | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Stack | 646 | 653 | 662 | 674 | 685 |
| Reach | 409 | 420 | 437 | 455 | 471 |
| Head Tube Length | 159 | 110 | 120 | 130 | 145 |
| Head Tube Angle | 67.5° | 67.5° | 67.5° | 67.5° | 67.5° |
| Bottom Bracket Height | 46 | 65 | 65 | 65 | 65 |
| Chainstay Length | 456 | 470 | 470 | 470 | 470 |
| Wheelbase | 1157 | 1176 | 1198 | 1218 | 1240 |
| Top Tube Length (horizontal) | 587 | 607 | 627 | 647 | 667 |
| Standover Height | 755 | 778 | 782 | 787 | 824 |
| Seat Tube Length | 370 | 405 | 450 | 495 | 545 |
| Seat Tube Angle | 74.5° | 74.0° | 74.0° | 74.0° | 74.0° |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
Customer reviews and Q&A's are disabled because you declined functional cookies.
To enable reviews and Q&A's click the 'Cookie Settings' button below and enable functional cookies.
Cube Reaction Hybrid SLX 800 2025 - Electric Mountain Bike
Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
Here at Tredz, we accept Cycle to Work vouchers from all national schemes. For more information click here.
We understand that the Cycle to Work process can be a little slower than we would all like - so to help you pick the perfect ride, we're now offering FREE Cycle to Work Reservations (T&C's apply). Simply speak to a member of our Online Bike Experts Team via Live Chat to discuss your reservation. Find out more here.
At Tredz we make finance easy. You can choose from a range of flexible finance repayments from 6 months up to 48 months, choose to place a deposit and pay the balance on finance. Go with a 0% APR finance deal with absolutely no interest on payments, or a 9.9% APR Buy Now Pay later option with a choice of 12 or 24 deferred payment options, or a longer-term 14.9% APR option with lower monthly payments. For more information click here.
At Tredz, we’re committed to bringing you the best products at the best prices. If you find a product cheaper elsewhere, simply contact us for an immediate response using our live chat service. Click here to discuss your price match with an agent now for help.
Subject to Terms and Conditions
At Tredz, we offer a fast high quality service, with a range of options from free delivery on orders over £30, next day and convenient click & collect from one of our stores. Simply select within the checkout.
*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.At Tredz, if you are not 100% happy with your order, then you can use our simple hassle free returns service. Simply return the item new and unused in the manufacturers original packaging within 365 days of purchase. Bikes and larger items are collected by courier.
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
To help you get started we have put together a handy Bike Building Guide, click here.