KELLYS Theos AX90
Premium full suspension e-MTB with AVINOX M2S motor with up to 150 Nm, 800 Wh battery and 29" wheels. It delivers incredibly exceptional performance and endurance. It offers the perfect balance of power, range and handling for even the most demanding mountain trails.
Expected delivery date 1Q / 2027
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AVINOX M2S
Up to 150 Nm
800 Wh
12 speeds
29"
170 mm (front)
Shock absorber ROCK SHOX Super Deluxe Select+ R (205x65 mm)
Top quality rear shock designed for trail and enduro bikes. The key is the combination of sensitivity, lift support and reliability even on long descents. It offers a smooth and responsive start to the stroke, ample mid-stroke support and control in high impact situations. Thanks to its larger volume (Super Deluxe), it handles long descents better without overheating and losing power. DebonAir air spring. Select+ damping. Adjustable rebound.
The Shimano Deore XT M8200 is the latest generation of hydraulic disc brakes for MTB, taking performance, control and braking consistency to the next level. They offer excellent modulation and clear braking action, which you'll especially appreciate on technical terrain. With better cooling and new fluid, they maintain performance even on long descents without fading.
Hydraulic system
SERVO WAVE technology
New low viscosity mineral oil
Improved lever ergonomics
KELLYS THEOS AX90: The new king of e-MTBs with brutal Avinox M2S drivetrain and premium components
The Slovakian brand KELLYS introduces the AX90 in the THEOS AX-series - a fully suspension enduro/mountain e-bike that combines a modern aluminium frame, an extremely powerful new Avinox M2S motor and top-of-the-line SRAM AXS wireless equipment. This is a machine designed for demanding riders who want maximum performance, long range and precise handling in the off-road.
Frame and suspension - a solid foundation for aggressive riding
The frame of the KELLYS THEOS AX-series is made with FLT welded technology from Al 6061-T6 aluminium. It uses the proven Horst-Link four-element system with 160 mm rear travel. The frame head is 1.8" tapered, the brakes are post mount on a 203 mm disc. The bike is ready for a 29" fixed axle 12x148 mm Boost setup. The frame is designed for full cable integration and easy battery removal.
The RockShox Zeb Ultimate (170mm) front fork with DebonAir+ / Charger 3.1 RC2 shock provides precise handling and responsiveness in rough terrain. The RockShox Super Deluxe Select+ rear shock (205x65 mm) with DebonAir+ and RCT tuning perfectly complements the frame kinematics for maximum traction and support while pedaling.
Avinox M2S - new generation with 150 Nm in Boost mode
The heart of the e-bike is the compact, high-revving AVINOX M2S motor. It offers a maximum of 130 Nm of torque in normal mode and up to 150 Nm in Boost mode. Thanks to this, it handles even the steepest climbs with ease and provides instant response.
The AVINOX Li-ion battery is fully integrated into the frame, internally removable, with a capacity of 800 Wh (23 Ah) and weighs just 3.74 kg. This means significantly longer range than previous generations and fast recharging. Control is provided by the AVINOX Wireless Controller BC100 with Bluetooth 5.1 and the AVINOX DP100 Flat colour OLED display.
SRAM GX Eagle AXS T-Type Transmission
The bike is equipped with the complete SRAM GX Eagle AXS T-Type wireless system - the most advanced electronic shifting system for e-bikes. PROWHEEL cranks (165 mm) with SRAM Eagle Transmission 36T (Direct Mount) work with SRAM XS-1270 (10-52T) cassette and SRAM Eagle 70 T-Type Flattop chain. Shifting is via SRAM's AXS POD R derailleur - fast, quiet and reliable even in the mud. A total of 12 gears provide a wide range for any terrain - from technical singletrack to fast descents.
Brakes and wheels - tracking at the top level
The braking system consists of SHIMANO Deore XT M8200 hydraulic disc brakes with BL-M8200 levers and GALFER Fixed Disc Wave® DB006W2 corrugated discs (200 mm front and rear). The brakes are strong, responsive and resistant to overheating.
The wheels consist of NOVATEC hubs (front D791SB-B15 28 holes, rear D462SB-SL-B12-S3S XD with 5x bearings and 32 holes) and DT SWISS H 552 / H 622x30 rims. SCHWALBE Magic Mary tyres (29" x 2.50" TLR) - Gravity Pro Radial Ultra Soft at the front, Trail Pro Radial Soft at the rear - offer maximum grip and damping.
The KELLYS THEOS AX90 is a modern, powerful and very well equipped e-MTB that combines a new generation Avinox M2S motor (with record torque), a large 800Wh battery, a fully wireless SRAM AXS drivetrain and premium RockShox suspension. The aluminum frame with Horst-Link kinematics provides great handling and durability at a more affordable price than its carbon predecessors. If you're looking for an enduro e-bike for day trips, technical trail riding and aggressive descents, the AX90 is a great choice.
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
Avinox M2S
A high-performance motor with 130 Nm of torque (150 Nm in Boost mode), a peak power output of 1500 W, and a lightweight design (2.59 kg). The second generation features flat-wire winding for higher efficiency, quiet helical gearing, and Dual Gear Engagement technology, which eliminates rattling during descents without assistance. Internal resistance has been reduced by 41%, ensuring a natural ride even with a depleted battery. Integrated sensors enable adaptive power control based on cadence and riding conditions. Intelligent electronics ensure lightning-fast pedal response and smooth power delivery that will support you even on the most demanding terrain.
Avinox RS800 Battery
The Avinox RS800 battery, with a high capacity of 800 Wh, combines maximum power with the practicality of a removable system. Weighing 4.0 kg and featuring IP56 protection, it can be easily removed from the frame thanks to a locking mechanism and charged anywhere away from the bike. When paired with the M2S motor, it delivers an impressive continuous power output of 1300 W and can reach a peak of 1500 W in Boost mode. Intelligent health management ensures 80% capacity retention after 500 cycles, and GaN technology enables ultra-fast charging.
Avinox DPC100 Display
A smart 2" OLED touchscreen integrated into the frame with a high resolution of 326 ppi and 800 nits of brightness, which automatically adjusts to the surroundings. It is equipped with GPS sensors, a gyroscope, a barometer, and support for Bluetooth 5.1 and ANT+. The DPC100 model stands out with support for Apple Find My for easy bike tracking and allows you to adjust virtually all system functions directly on the screen without needing an app. It records your route, performance, and cadence in detail. Controls are complemented by wireless handlebar controls (right controller available only on select models) and a built-in 10W USB-C port for charging accessories while riding.
Extended 5-year warranty on Kellys frames
Kellys provides a standard 24-month warranty and an optional extended warranty on the frame for a total of 5 years for the first owner. This benefit applies only to individuals using the bike for recreation and is non-transferable. The extended warranty applies only to the frame construction, not to the paint, carbon frames, or moving parts of full-suspension bikes.
To activate the extended warranty, online registration is required within 60 days of purchase. Another condition is to have the first warranty inspection after 100 km and then regular annual servicing at a professional service center.
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 | 2027 |
| Brand | Kellys |
| Load capacity | 120 kg |
| Frame size | Frame L, Frame S, Frame XL, Frame M |
Motor
| Centre engine | Yes |
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