KELLYS Theos F100
A first-class machine. It delivers performance, comfort and style. It features a premium Shimano EP8 motor, 825 Wh battery, front and rear suspension and 12 speeds. Mullet - a combination of 29" and 27.5" wheels. It offers an unrivalled riding experience that is sure to impress everyone.
SHIMANO EP8
85 Nm
825 Wh
12 speeds
29", 27,5"
150 mm, 210x55 mm
The carbon fibre frame represents the pinnacle of modern engineering in electric bike design. Carbon fibre is a lightweight but incredibly strong material that offers many advantages for electric bike frames, offering a winning combination of lightweight construction, rigidity, vibration absorption, durability, aerodynamics, customization and visual appeal. Carbon fibre electric bike frames can withstand the demands of everyday use, including the stresses associated with electric motor assistance
The ROCK SHOX Super Deluxe Select+ RT, DebonAir 210x55mm is an advanced rear shock designed to provide superior performance and control. DebonAir technology uses a larger air space to increase responsiveness and flexibility. Built using high quality materials and precision engineering.
E-bike range calculator
The e-bike range is approximately
*Factors affecting total range include assist mode settings, technical condition of the e-bike, battery age, ambient temperature, headwind, and riding technique
The revolutionary KELLYS Theos F100 is a premium full suspension e-bike, featuring cutting-edge technology with premium design to create a ride capable of almost anything. Developed by Kellys Bicycles, a renowned brand known for its commitment to quality and performance, the Theos F100.
The Theos is built in Mullet form - a combination of 29" (front) and 27.5" wheels (rear). The e-bike features a unique frame construction technology - carbon frame/carbon fibre bonded with thermoplastic polymer + steel microfibres, providing superior stiffness, strength and durability, yet lightweight. The e-bike itself weighs approximately 24 kg.
At the heart of the Kellys Theos F100 is a powerful SHIMANO EP8 motor with 85Nm of torque that integrates seamlessly into the frame, providing assistance when needed while maintaining a natural and responsive feel to the ride, and a KELLYS Re-Charge K1 Li-ion battery with a capacity of 825Wh. The battery is fully and gracefully integrated into the frame. With a high capacity, you can enjoy extended rides without worrying about running out of power.
In terms of design, the Kellys Theos F100 boasts a sleek and modern aesthetic, with clean lines and attention to detail that reflect its high-quality construction. The frame is crafted from lightweight carbon, ensuring a comfortable and responsive ride without compromising on strength or stability.
The Theos F100 e-bike is equipped with a number of features aimed at enhancing comfort and safety. A suspension fork helps smooth out rough terrain, while ergonomic grips and a comfortable saddle ensure a pleasant riding experience, even on longer journeys. Powerful disc brakes provide reliable stopping power in all conditions, giving riders confidence and control when riding in wild terrain.
The Kellys Theos F100 e-bike will delight all riders looking for a premium machine in the field of e-bikes and cycling. It offers an unrivalled riding experience that is sure to impress beginners and experienced cyclists alike. It delivers performance, comfort and style.
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.
Need help choosing the right e-bike? Use our e-bike selection guide or contact us directly.

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 Kellys 825 Wh / 23 Ah
The Kellys 825 Wh / 23 Ah / 36V battery is an integrated lithium-ion battery Small, compact, powerful, with a nice shape and stylish appearance. The fully integrated K1 825 Wh battery is one of the best power-to-weight ratio batteries on the market. You will literally be amazed by the results of this powerful battery. The combination of power and power reserve makes the battery one of the best components of an e-bike. The battery is capable of taking the e-bike up to 190 km on a single charge. But of course it always depends on the track profile and how the assistance is used.

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.
These might interest you:
Parameters
General
Model year | 2025 |
Brand | Kellys |
Frame size | Frame L, Frame M |
Load capacity | 120 kg |
Colour | Black |
Motor
Engine manufacturer | Shimano |
Engine type | Shimano EP8 |
Torque | 85 Nm |
Centre engine | Yes |
Battery
Battery capacity | 800 - 899 Wh |
Precise capacity | 825 Wh |
Suspension
Shocks | ROCK SHOX Super Deluxe Select+ RT, DebonAir / Open-Threshold (210x55 mm) |
Front fork | ROCK SHOX Lyrik Ultimate (29") Boost, 150 mm, DebonAir / Charger 3 RC2 / Maxle Stealth 15 mm thru axle |
Components
Racks | RACE FACE Next R 31 Carbon 622x31 (F) |
Saddle | Fizik Vento Argo R1 |
Saddlebag | KS LEV-Ci Remote Telescopic - diam 30.9 mm |
Grips | KLS Poison OneLockon |
Coats | SCHWALBE Nobby Nic Evo Super Trail 62-622 (29"x2.40) Tubeless Easy, ADDIX SpeedGrip, folding, SCHWALBE Nobby Nic Evo Super Trail 62-584 (27.5"x2.40) Tubeless Easy, ADDIX SpeedGrip, folding |
Extender | RACE FACE Turbine R 35 - diam 28.6 mm / bar bore 35 mm / 0° / délka 50 mm |
Handlebars | RACE FACE Next R 35 RiseBar - diam 35 mm / rise 20 mm |
Transmission
Sorting | Shimano SW-EN600-R Di2 for shifting |
Number of gears | 1x12 |
Shifter | SHIMANO Deore XT Di2 M8150 |
Cassette | SHIMANO XTR CS-M9100-12 (10-51T) |
Brakes
Rear brakes | SHIMANO XTR M9120 Hydraulic Disc, 203mm |
Front brakes | SHIMANO XTR M9120 Hydraulic Disc, 203mm |
Questions
Please provide your contact information and in the field Message enter your question and we will get back to you shortly.