This Kellys Theos F E-MTB introduces a composite frame that is twice as strong as carbon fiber

This Kellys Theos F E-MTB introduces a composite frame that is twice as strong as carbon fiber

Cycle builder Kellys has just unveiled a new full suspension electric mountain bike with a powerful 720 Wh battery and a frame made in Europe from a composite material that is said to be twice as strong and durable as carbon fiber, yet still recyclable.

With the growing craze for electric bikes, manufacturers are gradually being pushed to look for a key innovation to stand out from the competition. This is the case of Kellys, a bicycle manufacturer of Slovak origin, which announces that it is using a “revolutionary” material for the frame of its new full suspension electric mountain bike, the Theos F. It is a thermoplastic hybrid composite. which combines carbon and stainless steel microfibers. This material was developed with the Belgian firm Rein4ced and it allows robotic production which takes place in a European factory, says Kellys.

As for the qualities of this frame, the manufacturer claims that it is twice as strong and durable as an equivalent in carbon fiber, without being heavier. Another advantage, this material is recyclable. It is obviously in the field that we will be able to judge the dynamic qualities and the possible advantages offered by this concept. But the innovation is interesting for its promise of robustness which can sometimes be lacking in first price carbon frames. Kellys offers three versions of the Theos F which all use a vintage 2021 Shimano electric motor, but the exact model is not yet specified. It will be associated with a 720 Wh 20 Ah battery co-developed with the German firm BMZ. Here again, no precise information on autonomy and charging time.

Enduro and all mountain type assemblies

Kellys targets heavy mountain biking and enduro enthusiasts with mounts combining DT Swiss H1700 Spline 27.5 ” rear and 29 ” front wheels and 170mm rear travel. The Theos F90 is a beautiful high-end e-bike, equipped with a Fox 38 Float Factory 180mm fork and a Fox Float X2 Factory rear shock, both with the Kashima coating. The transmission is entrusted to a Shimano Deore XT Di2 electric shifter / derailleur assembly. The hydraulic disc brakes are Shimano Deore XT.

The Theos F70 is the mid-size model fitted with a Rock Shox Zeb 180mm fork, Rock Shox Super Deluxe spring shock, Deore SL-M6100-IR Rapidfire Plus / Shimano Deore XT shifter / mechanical derailleur set and Shimano MT420 hydraulic brakes. The Theos F50 is entry-level for a slightly less committed practice, with a Rock Shox 35 Gold RL fork with 150mm of travel, a Rock Shox Deluxe Select R shock, a Deore SL-M4100-R shifter / derailleur assembly Rapidfire Plus / Deore M5120 and Shimano MT420 hydraulic brakes. It is not known whether this type of frame will result in more affordable prices for these pedelecs because Kellys has not yet communicated on the prices of these new models.

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