Cube Reaction Hybrid Race 800 2025 - Electric Mountain Bike

The Cube Reaction Hybrid Race 800 brings together advanced Bosch e-bike technology with the rugged performance of a trail-ready hardtail. At the heart of the bike is the Bosch Performance Line CX drive unit, delivering up to 85Nm of torque and a natural pedalling feel. With the 800Wh Bosch PowerTube battery neatly integrated into the downtube, you get plenty of range for long days in the saddle, whether that’s a trail loop after work or an all-day off-road adventure. The system is also lighter and quieter than before, with Bosch’s latest features like Hill Hold and Extended Boost to make technical climbs easier.
Key Features:
- Aluminium Superlite frame, Agile Ride Geometry, integrated battery
- RockShox Recon Silver RL Air fork, 120mm travel (100mm on 27.5")
- Shimano XT/Deore 12-speed drivetrain, wide-range cassette
- Shimano BR-MT420 4-piston hydraulic disc brakes, 203mm rotors
- 29” or 27.5” wheels with Schwalbe Smart Sam 2.6” tyres
- CUBE dropper seatpost with internal cable routing
- Available with 0% APR finance
Drive Information:
- Motor: Bosch Performance Line CX, 85Nm* torque
- Battery: Bosch PowerTube 800Wh
- User Interface: Bosch Smart System
The Cube Reaction Hybrid Race 800 brings together advanced Bosch e-bike technology with the rugged performance of a trail-ready hardtail. At the heart of the bike is the Bosch Performance Line CX drive unit, delivering up to 85Nm of torque and a natural pedalling feel. With the 800Wh Bosch PowerTube battery neatly integrated into the downtube, you get plenty of range for long days in the saddle, whether that’s a trail loop after work or an all-day off-road adventure. The system is also lighter and quieter than before, with Bosch’s latest features like Hill Hold and Extended Boost to make technical climbs easier.
The Aluminium Superlite frame uses Gravity Casting Technology and Agile Ride Geometry for sharp, confident handling on singletrack while remaining comfortable on longer rides. Integrated cable routing keeps the look clean and reduces maintenance, and the UDH gear hanger ensures the bike is future-proof for drivetrain upgrades.
Front suspension is handled by the RockShox Recon Silver RL Air fork, with 120mm of travel on 29” models (100mm on 27.5”). This gives control and comfort when the trail gets rough. Paired with the Shimano XT rear mech and Deore shifters, the 12-speed drivetrain offers smooth, precise shifting across a wide 10-51T range, ensuring you’ve always got the right gear.
Stopping power comes from Shimano BR-MT420 4-piston hydraulic disc brakes, equipped with large 203mm rotors front and rear for consistent braking in all conditions. Rolling on CUBE EX30 tubeless-ready rims with wide Schwalbe Smart Sam 2.6” tyres, the Reaction Hybrid Race grips well on loose terrain while providing comfort and stability. A CUBE dropper seatpost rounds off the build, letting you easily adjust saddle height for descents and climbs.
*Performance upgrades to 100Nm torque, 750W power and 400% support are available via the Bosch eBike Flow app. A free firmware update, delivered through the app, may be required.
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 | RockShox Recon Silver RL Air, Tapered, 15x110mm, 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 BR-MT420, Hydr. Disc Brake (203) |
| Rear Brake | Shimano BR-MT420, Hydr. Disc Brake (203) |
| Rear Mech | Shimano XT RD-M8100-SGS, ShadowPlus, 12-Speed |
| Shifters | Shimano Deore SL-M6100-IR, Direct Attach |
| Speed | 12 |
| Rims | CUBE EX30, 32H, Disc, Tubeless Ready |
| Front Hub | Cube Engineered By Newmen, 15mm, Boost, Centerlock |
| Rear Hub | Cube Engineered By Newmen, 12mm, Boost, Centerlock |
| Front Tyre | Schwalbe Smart Sam, Active, 2.6 |
| Rear Tyre | Schwalbe Smart Sam, Active, 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 Wh |
| Motor | Bosch Drive Unit Performance Line CX, Smart System |
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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.
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