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Kellys Theos F70 29/27.5 e-bike, black

4,499 
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In-store pickup
From 16.07.2026 (Thursday) Check availability
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At MTBIKER Service Point
Available from 21.07.2026 (Tuesday)
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By courier to your home Delivery by courier GLS
Delivery method on Friday 17.07.2026
Additionally you will receive
Bike fitting discount 50 % (you will save 70 €)
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Extended return option up to 100 days More info
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Extended additional warranty +1 year More info
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Rating (6)
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Kellys Theos F70 29/27.5 electric bike

Level and quality of equipmenthelp
Sports and performance cycling

Serious sports equipment for intense and regular off-road driving, where you can 100% rely on sufficient performance and component installation.

Specification
Motor
Shimano EP8, 85 Nm, 36 V
High to maximum performance
Battery
KELLYS Re-Charge K1 Li-ion internal removable 725 Wh / capacity 20 Ah, co-developed by Kellys-BMZ
Sports and performance cycling
Cycling computer
Shimano SC-EM800
Frame
KELLYS THEOS F-series - Thermoplastic Hybrid Steel-Carbon Composite aka FEATHER® by Rein4ced assembled by advanced robotic manufacturing / Designed & manufactured in EUROPE / Think Link® suspension system, 170 mm rear travel, integrated removable battery, 1.8“ tapered HT, post mount 203 mm, mullet 29/27.5"+ wheelset, 12x148 mm Boost thru axle
Fork
RockShox Zeb Select+ (29) Boost, 180 mm, DebonAir / Charger 2.1 RC / Maxle Stealth 15 mm thru axle
Sports and performance cycling
Rear shock
RockShox Super Deluxe Select R (230 x 65 mm)
Shifting
Shimano Deore XT Linkglide SL-M8130-R Rapidfire Plus (I-Spec EV)
Sports and performance cycling
Derailleur
Shimano Deore XT Linkglide RD-M8130 (direct mount)
Cassette
Shimano Linkglide CS-LG600-11 (11-50T)
Sports and performance cycling
Chain
Shimano Linkglide CN-LG500 (122 links)
Cranks
Shimano EM600/SM-CRE80-12-B (34T) - length 170 mm
Sports and performance cycling
Brakes
Shimano Deore XT BR-M8120/BL-M8100 Hydraulic Disc, 203 mm/203 mm
Sports and performance cycling
Rims
KLS Bender Disc (front 622x38 / rear 584x38 / 32 holes)
Hubs
Shimano Deore MT410-B / MT400-B Disc Center Lock (32 holes)
Spokes
stainless steel black
Front tire
Schwalbe Eddy Current Evo SuperTrail 65-622 (29x2.60) Tubeless Easy, ADDIX Soft, folding
Rear tire
Schwalbe Eddy Current Evo SuperGravity 70-584 (27.5x2.80) Tubeless Easy, ADDIX Soft, folding
Seat post
KS Rage-i Remote Telescopic - diam 30.9 mm / length 442 mm, stroke 150 mm (M) / length 495 mm, stroke 170 mm (L)
Saddle
fi'zi:k Taiga, S-alloy rails
Stem
RACE FACE Aeffect R 35 - diam 28.6 mm / bar bore 35 mm / 0° / length 50 mm
Handlebars
Race Face Chester 35 RiseBar - diam 35 mm / rise 35 mm / width 780 mm
Grips
KLS Poison
Headset
ACROS 1.8 semi-integrated tapered
Pedals
plastic
Gear shift unit
Shimano SW-EM800-L for assist
Thru axle
front RockShox Maxle Stealth 15x110 mm / rear Mr.control 12x177 mm
Product details
Sex Men, Unisex
Model year 2023
Gears 1x11
Groupset Shimano XT, Shimano Deore
Colour black
Material carbon fiber, steel
Wheel diameter front 29" /rear 27.5"
Drive Shimano STePS EP8
Battery 725 Wh
Brakes Hydraulic disc
Fork Air
Fork travel 180 mm
Rear travel 170 mm
Dropper post yes
Shock type Air
Control type mechanical
Engine torque 85 Nm
product ID 177487
Bike size ML
Height (cm) 165 - 180 cm180 - 195 cm

All bicycles at the MTBIKER shop are new, not-ridden, from an official distributor and with a full warranty. Several brands even offer a lifetime warranty on the frame after registration. We perform all warranty services in MTBIKER stores after personal delivery or after sending the bike (or its part) by courier.

Our bike shipment is as follows:
  1. The bicycle is taken out of the manufacturer's box
  2. The bicycle is assembled, inspected and adjusted (front and rear derailleur, shock, fork, wheels,...)
  3. The bicycle is carefully packaged back into a box and shipped
  4. If you order a bike for in-person pick-up or home delivery, the bike will be waiting for you assembled and checked
  5. If you order a bicycle via courier to your home address, the following must be done at home:
    1. Take the bike out of the box and carefully remove safety material and foils
    2. Mount handlebar to stem (1 minute, 4 or 5 mm hex hey is needed).
    3. Mount front wheel to fork (1 minute, without the need of any tools if the bike has a quick release).
    4. Loosen the screws in the headset, straighten the stem with the front wheel, tighten the upper screw on the fork and then tighten the headset (2 minutes, 4 or 5 mm hex key is needed).
    5. Mount the pedals to the cranks while lubricating the thread and carefully mounting it the right way (1 minute, 8 mm hex key or 15 mm wrench).
    6. Mount seat post to frame (10 seconds, without needing any tools if the frame has a quick link).
    7. Inflate the tires or fork and shock to desired pressure (2 minutes, pump needed).
    8. Check the tightening of hex keys and quick-releases (2 minutes, 4 and 5 mm hex key is needed).
    9. Go for a test drive! Handle your bicycle carefully until you get used to it. If the bike has disc brakes, their performance will be limited from now on - they will gain their full power after 4-5 strong brakes at higher speed.
Auxiliary video for setting up the bike:
Product rating  (6 ratings)
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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

I've had the bike for a month. It is a perfect machine for hiking and of course the top for downhills. He was also in the bike park and I rate it great. It is quiet, the suspension is sensitive and reliable. Shimano XT mounting as always top. It just cracks in it, I have the feeling that the middle and head composition, which is probably fine to begin with. I'll have a look at the warranty. 5* for me so far

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SK Ako moze byt na zaciatok nejake pazvuky z bicykla v pohode? Urcite to nieje v pohode

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SK Reagujem na starší príspevok ale možno niekomu pomôže. Mam F90 a po 1000km tiež z meho začali ísť vŕzgajúce zvuky. Riešenie: dotiahnutie všetkých osiek zadnej stavby (boli úplne povolené) a vyčistenie/namazanie hlavového zloženia. Bike je tichý ako na začiatku.

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SK Ahoj.
čo ti povedali a čo zistili na Garančke? čo ti to vrrzgalo v hlavovom zložení?
Dík....

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

Perfect in every direction even on terrain and the visor is super perfect to control and will give you courage when going down the hill, just great ?

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

First feelings great. I'll find something and then add it.

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SK Ahoj.
tak jak hodnotíš celkovo tento bike? Aj ty máš problémy s motorom, alebo s niečim iným?

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Product questions
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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

SK Dobrý deň chcel by som vymeniť cely zadný náboj za niečo kvalitnejšie napríkladhttps://www.mtbiker.sk/shop/kolesa-a-rafiky/naboje/mtb-kotucove/dt-swiss-350-boost-zadny-naboj-32-dier-12x148-mm-centerlock-orech-microspline-p188907.html#description
len neviem či bude všetko presne pasovať v zadnej stavbe po nahodeny kazety a kotúča či nebude daky problém vopred dakujem za odpoved

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SK Dobry den prajem,

ano, akykolvek Boost naboj (t.j. rozmer 148x12 mm) mozete pouzit, bude sediet.
Ak ste nemenili kazetu, tak nebude sediet vsak orech - poztrebujete variant s HG orechom.

Povodne kotuce mate s uchytom na Centerlock? T.j. dotahuju sa len jednou maticou, alebo 6 skrutkami?
Ak Centerlock, tak vhodny naboj by bol napr.: https://www.mtbiker.sk/shop/kolesa-a-rafiky/naboje/mtb-kotucove/novatec-d902sb-cl-b12-a4a-11s-zadny-naboj-centerlock-32-dier-12x148-mm-shimano-hg-oem-p236635.html.
V 6-dierovom variante uhytu kotuca su dostupne napr. https://www.mtbiker.sk/shop/kolesa-a-rafiky/naboje/mtb-kotucove/novatec-xd602sb-a-b12-abg-zadny-naboj-6-dier-32-dier-12x148-mm-anodized-black-shimano-hg-oem-p259579.html alebo https://www.mtbiker.sk/shop/kolesa-a-rafiky/naboje/mtb-kotucove/sram-900-zadny-naboj-6-dier-32-dier-12x148-mm-shimano-hg-p285287.html.

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SK Dobrý kazetu by som nemenil a kotúče mam teraz na center lock ale vybral som si ten to náboj na 6 skrutiek stim nebudežiadny problém ?https://www.mtbiker.sk/shop/kolesa-a-rafiky/naboje/mtb-kotucove/novatec-xd602sb-a-b12-abg-zadny-naboj-6-dier-32-dier-12x148-mm-anodized-black-shimano-hg-oem-p259579.html?itm_medium=komentare#questions Veľmi pekne dakujem za odpoved

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SK Dobry den, ano, mozete ho pouzit, ale bude teda potrebne vybrat aj novy brzdovy kotuc s uchytenim na 6 skrutiek (viete si ich nalavo na liste vyfiltrovat, aj podla uchytu, aj priemeru), inak vsetko sadne - https://www.mtbiker.sk/shop/komponenty/brzdy/brzdove-kotuce.

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SK Áno to uz mám poviberane veľmi pekne dakujem za rýchlu odpoved

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

Hello.
Questions: Is this type of bike (Enduro) also suitable for classic XC riding, straights, simple trails, suburban cycle routes? Isn't a geometrically or otherwise limited bike adapted more only for enduro, downhill? Will it be a normal driving feeling even on such a geometry? I do not deal with the dimensions and type of tires, I would adapt them to the type of track. I would like to use it here and there in bike parks, but mainly on unpaved roads, forests.
Thanks...

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SK Dobry den,

samozrejme je bicykel mozne pouzit aj na lahsie tereny, tak ako pisete - geometriou je usposobeny aj do velmi narocneho terenu, avsak posed je komfortny, ostry sedlovy uhol ulahcuje sliapanie, dlhsi razvor a polozeny hlavovy uhol zvysuju stabilitu v priamom smeru a vo vyssich rychlostiach.
V kombinacii s lahkymi plastami moze byt bicykel urcite zabavny aj na lahsich trailoch a na dlhsich vyjazdoch. S klasickym setom odolnejsich plastov je potom samozrejme bajk mozne bez starosti prevetrat aj v bikeparkoch.

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SK ďakujem Vám za skorú odpoveď, takže sa na cestách nebudem húpať-plávať a nadrieť sa na nom, tie tlmiče-hlavne zadný sa dajú teda úplne zavrieť, predpokladám.
Modelový rok nespomína ani výrobca, či komponenty nejak upravil,alebo zmenil.
Takže predpokladám ,že motor EP8(EP800) i bateria 725Wh je z 2022.

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SK Dobry den,

tlmic ani vidlica lockoutom nedisponuju - v enduro kategorii to casto nie je zrovna podmienkou.

Kazdopadne na dlhsie vylety je mozne tlmenie prifuknut (samozrejme v ramci max. povolenych tlakov), pri slapani po sediacky bude sliapanie bezproblemove, v pripadnych stojkach je samozrejme potrebne ratat s prepruzovanim.
Treba si samzorejme zvazit, ake jazdenie bude u Vas prevladat - pokial sa na 90% budete "vozit" po polnych cestach a lahkych chodnickoch, tak je samozrejme bicykel naozaj overkill a pozeral by som subjektivne po niecom lahsom, s mensim zdvihom. Pokial bude jazdenie vsak vyvazene aj tazsimi vyletmi, prip. spominanymi bakiparkami, tak samozrejme je to opat o kompromisoch - stale je to e-bike, takze motor dopomoze na dlhsich vyletoch aj napriek vyssej hmotnosti bicykla, a teda v tazsom terene budete mat stale k dispozicii 100% istotu.

Ano, osadenie je z poslednych sarzi vyrobcu 2022/2023.

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SK Dobrý večer.
Je to v podstate velká škoda,že tieto Theosi F, sú akokeby v pozabudnutí. A ževraj ich topky🤣 ,tak v podstate ich nemodernizujú, od 2022 ...nestačia ísť s trhom?.Množstvo rôznych problémov so shimanom EP8 800 s max vykon 500Wat oproti starším bosch cx4 600Wat.Aspoň mohli zareagovat na odozvy ľudí a montovat tam novšie EP801 motori. Sú k dispozícii od 2023. Prípadne ten Panasonic ultra tam napchať,keď uz ich majú aj na Theos R-kach a majú to byť silné mašiny.Asi je to vtip.😁
Prosím vás,kedy budú k dispozícii f-kové theosi s EP801? Samozrejme o F100 záujem
nemáme. Ďakujem.

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SK Dobry den prajem,

na sezonu 2025 sa ocakva samozrjme u Kellysu aj "omladenie" pohonneho ustrojenstva - blizsie info o terminoch, cenach, prip. kompletnom osadeni zatial zial nemame. Theosy radu R - napr. R50 su uz na sezonu 2025 osadzane motormi Panasonic.

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

SK Zdravím, stratila som na tomto biku vodítko reťaze - viete mi prosím napísať, resp. poslať odkaz na vodítko, ktoré by mi presne sadlo na bike? Bez toho vodítka reťaz stále padá - ďakujem

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

SK Dobrý deň, mám otázku. Dajú sa kolesá na tomto bicykli prerobiť na bezdušový systém? Ďakujem za odpoveď.

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Variant Kellys Theos F70 29/27.5 elektrobicykel, čierna

SK Mozete prosim potvrdit, ze tie kolesa su tubeless ready? Nikde neviem najst specifikaciu. Vdaka

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SK Dobrý deň,
skontrolovali sme bicykel , ráfiky nie sú bezdušové .

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SK Dobry den,

podla specifikacie vyrobcu je bicykel osadeny motorom EP800.

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Kellys is a popular Slovak brand of bicycles and accessories that was founded in 1991. Today, the brand's offer will satisfy both the recreational rider and the more demanding cyclist. It offers thousands of products, including more than 150 bicycle models, both classic and the increasingly popular electric bicycles. Kellys is known for its commitment to quality and performance, with an emphasis on innovation and modern design. They often use modern technology and materials to give riders the ultimate riding experience.

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