KELLYS Theos F90
Perfectly equipped full-suspension mountain e-bike with Shimano EP8 85 Nm mid-motor and 820 Wh battery. Mullet - a combination of 29" and 27.5" wheels. With a range of up to 200 km. Ready for the real wilderness.
Description
SHIMANO EP8
85 Nm
820 Wh
11 rychlostĂ
29", 27,5"
180 mm, 230x65mm

The KELLYS Theos F90 is the top e-bike designed for riders looking for performance and reliability on challenging trails and in a variety of conditions. This model features a Shimano EP8 mid-motor with 85Nm of torque, providing exceptional power and support with every pedal. With a 820 Wh battery, you have plenty of power for long trips and aggressive off-road riding.
For maximum comfort and performance, the bike is fitted with quality components. The FOX 38 Float Factory front fork with 180mm of travel and Kashima Coat technology ensures a smooth and efficient ride, even on rough terrain. The ROCK SHOX Super Deluxe Ultimate shock absorber also contributes to this, guaranteeing excellent suspension and shock absorption thanks to DebonAir and RCT Open-Threshold technology.
Shifting is provided by the Shimano Deore XT Di2 system, with a Shimano Deore XT Di2 M8050 derailleur and Shimano Deore XT Di2 Shift Switch SW-M8050-R Firebolt, which guarantees precise and smooth shifting. The Shimano CS-M8000-11 cassette with 11-46T range offers a wide range of gears for different types of terrain.
For safety, the bike is equipped with Shimano Deore XT M8120 hydraulic brakes with 203mm discs front and rear, providing strong and controlled stopping power even in challenging conditions.
In addition to performance and reliability, the Kellys Theos F90 delivers comfort with a fi'zi:k Taiga saddle and a quality FOX Transfer Factory Remote Telescopic seatpost that allows for comfortable seat height adjustment. The SCHWALBE Eddy Current Evo tires offer excellent traction and stability on any surface, making them ideal for demanding trail riders.
The bike is built on solid DT SWISS H 1700 rims and fitted with RACE FACE Aeffect R 35 handlebars, which provide great handling and stability when riding.
In short, the Kellys Theos F90 is a powerful, reliable and technically advanced e-bike that can handle even the toughest off-road challenges. If you're looking for a bike that delivers top performance, comfort and safety, this model is a great choice.
KELLYS BICYCLES s.r.o. now offers an extended warranty of 5 years. This extended warranty covers the frame of the e-bike and its claim when a manufacturing or material defect is proven to be the cause.
E-bike range calculator
Flat
Medium
Hills
The e-bike range is approximately
*Factors affecting total range include technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique

Motor Shimano EP 8
The Shimano EP8 electric motor, rated at 250W and 85Nm of torque, means 21% more power compared to the most powerful motor to date, the Shimano E8000. 10% lighter weight with a total of 2.6 kg thanks to the use of magnesium for the motor block. Redesigned bearings and gear connections inside the motor, resulting in 36% less friction and drag when pedalling with the drive off or above the motor assist speed limit.

Battery BMZ 820 Wh
Powerful battery for long range electric bikes. With a capacity of 820 Wh and a voltage of 36 V, it provides long range, high efficiency and reliability even on demanding routes. The integrated Battery Management System (BMS) protects the battery from overheating, overvoltage and deep discharge.
The compact design designed to be fully integrated into the frame of the e-bike provides protection and a sleek look. The 820 Wh (22.77 Ah) capacity provides a range of up to 200 km depending on riding style, terrain and level of assistance. It supports fast charging, with 80% of capacity achievable in just 2-3 hours with the appropriate charger. Uses high quality Li-ion cells that last up to 1000 charge cycles while maintaining high performance.

Display Shimano SC- E7000
Original display Shimano STePS SC-E7000. Minimalist design, clear display. Compact wireless bike computer showing all important data about your bike and your rides. With the E-TUBE PROJECT app on your mobile device, the data displayed and the functionality of the entire SHIMANO STEPS E-BIKE system can be easily customised.
- Very easy to read display.
- Flat design for MTB.
- Compatible with SHIMANO STEPS components
- Up to 5 riding modes available
- Settings directly in the field using the simple E-TUBE RIDE app
- Easy to update the internal display control program using the E-TUBE PROJECT app on your mobile device.

Designing and manufacturing e-bikes is not just about putting mechanical components together. It's more than that. The purpose for which an e-bike is created is important, because it has a unique purpose in each person's life. This mission gives every KELLYS e-bike its reason for being. Thanks to modern technology, skilled designers and the best materials, the Kellys brand has some of the highest quality e-bikes.
We are specialists in KELLYS electric bikes. We offer full suspension and fixed mountain bikes, touring bikes, men's and women's electric bikes with an excellent price / performance ratio.
Contact: KELLYS BICYCLES CZECH REPUBLIC s.r.o., Havlickova 426, 753 01, Hranice, Czech republic, e-mail: infocz@kellysbike.com, phone: +420 581 698 810, web: https://kellysbike.com
Parameters
General
| Model year | 2023 |
| Brand | Kellys |
| Colour | Black matt |
| Load capacity | 120 kg |
Motor
| Engine manufacturer | Shimano |
| Engine type | Shimano EP8 |
| Torque | 85 Nm |
| Centre engine | Yes |
Battery
| Battery capacity | 800 - 899 Wh |
| Precise capacity | 820 Wh |
Transmission
| Shifter | Shimano Deore XT Di2 M8050 |
| Cassette | Shimano CS-M8000-11, 11-46T |
| Sort by | SHIMANO Deore XT Di2 Shift Switch SW-M8050-R Firebolt |
| Number of gears | 1x11 |
Components
| Racks | DT SWISS H 1700, 622x30 Center Lock (F), DT SWISS H 1700 Spline, 584x35 Center Lock (R) |
| Saddle | fi’zi:k Taiga, S-alloy rails |
| Saddlebag | FOX Transfer Factory Remote Telescopic, Kashima Coat - diam 30.9mm / stroke 150mm (M), 175mm (L) |
| Handlebars | RACE FACE Aeffect R 35 RiseBar - diam 35mm / rise 20mm / width 780mm |
| Extender | RACE FACE Aeffect R 35 - diam 28.6mm / bar bore 35mm / 0° / length 50mm |
| Coats | SCHWALBE Eddy Current Evo |
Brakes
| Rear brakes | Shimano Deore XT M8120, hydraulic, 203 mm |
| Front brakes | Shimano Deore XT M8120, hydraulic, 203 mm |
Suspension
| Front fork | FOX 38 Float Factory, Kashima Coat (29) Boost, 180mm, Float Evol / GRIP2 damper / 15QR thru axle |
Video
Questions
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