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27.5 Inch Electric Mountain Bike E-ST 100 - Blue

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Sale price: 486.000 KD

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This electric mountain bike has been designed and developed by us to best suit mountain bike rides on hilly and rolling terrain.

This electric bike has been designed to enjoy (or relive) your very first biking thrills. The smart electric assistance, driven by a cadence sensor and a control screen, helps you find your pace.

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Sale price: 486.000 KD

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Product Features

A photo of the 27.5 Inch Electric Mountain Bike E-ST 100 - Blue in use


Overcome your first slopes with the motor's torque of 42Nm at 250 W.


Ride an average of 2 hrs 15 min at a sporty pace thanks to the 380Wh battery.

Smooth pedalling

Enjoy/relive your first MTB rides: smart help with cadence sensor

Cycling comfort

Enjoy touring: raised position, 100mm suspension, Ergofit hammock saddle

Directional control

All-terrain, all-conditions tyres, wide handlebar.

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Product Reviews

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1091 reviews

27.5 Inch Electric Mountain Bike E-ST 100 - Blue
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its a great bike so easy to set up and look after and knowing that decathlon can look after the bike it great piece of mind

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I was looking for weeks for a good electric bike and I came across this one. My boss and I was looking at every possible option which is the best. This bike is amazing for its price. If you reading this and your nervous about spending that £999 on this bike it is totally worth it. The staff inside of decathlon was really helpful told us everything about the bike. Best piece of equipment I’ve used ever. Highly recommend

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E-St 100 rockrider.

If you’re looking for a mid range e mountain bike, look no further. I’ve read all the reviews and this how I see it. If you want a bike with a pile of named accessories this is not for you. If you want a bike that is fun, enjoyable, does pretty much everything you want a mountain bike to do this is it. I have changed the brakes to hydraulic but my choice. This bike is a game changer, I love it so much so that I’m buying my partner the ladies model. I have always been a purist, never going electric but after speaking to many people it was the best thing I ever did bike wise. Doesn’t stop you working hard, just means you go further and faster. Three power settings, keep it on one and you will still work hard. Those long shitty hills, power 2, takes the pain out of it but still working hard, 3 setting you’ll cruise! Can’t get out often enough! 10/10 in my book 😎

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Great bike

can't rate this bike highly enough just clocked 500miles since January this year and still enjoying the ride both on and off road .Great for doing trails where I stay

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Outstanding price great value.

I Purchased this bike on the cycle to work scheme in the last 3 weeks. I had no idea how it would ride due to it being the first electric bike I bought. I am amazed at how smooth the bike accelerates, in setting 3 it will cruise at 25KPH with ease, The charging is simple and contrary to what i read on previous reviews. I have completed about 50 miles on the bike so far and cant believe it's under a £1000. If this is going to be your first electric bike, GO AND GET IT! You wont be disappointed.

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Hi Gareth,

Thanks for taking the time to leave this amazing rating about the E-ST100! We're glad you're enjoying the bike so far. Don't hesitate to book the bike in for your 3 month free service when you're ready too!

We hope to see you in store again soon for more of your sporting needs!

Size | Hilly Wales | Comfort | Power

Bike arrived box was opened and accessories bag was open too twitchy bum time... Arrived within 2 business days even though the website said it would 2 weeks well happy with that. I'm 5.10ft inside leg 32 inch. The size guide said to opt for a large so glad i bought a medium (max height 5.7ft) My junk just about clears the bar I can stand flat footed over it. No way that would happen on the large would be goodbye baby maker. Bike feels surprising light no trouble picking it up with guns like mine. Tickets available on request. Went for blip around the local terrain in Wales, felt like Aladdin on his magic carpet going up the inclines, no burn in my thunderous thighs and no aortic pump thumping through my chest like a caged crackhead in cold turkey. Didn't even break a sweat Speed was good tried out all settings, on the flats either 0 or 1 is fine, unless your lazier than sloth. 2-3 obviously for the Everest in your life. Saddle, I'm comfort first very likely gonna get a wider seat to accommodate my insane glutes. Suspension would make you believe Michael J Fox has been cured. . Brakes good enough to snap a vertebrate. Tyre grip tighter than a nuns funion. I looked everywhere for a e--bike that didn't involve me opening a meth factory to pay for it. This is a bargain, i tried the more expensive ones. I looked at the pricey bikes I do not see where the money is 2-5k that money is just not on them bikes. I'm sure some elitist self pro-claimed cycling guru will be along shortly to say you need a center drive Bosch motor with a flux capacitor, only a fanny would take their advice they can keep that tosh for their circle jerk. Try it you might like it.

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Need a new sensor

I need a new sensor for my bike but I can’t find it anywhere can anyone help me thanks

New battery

How much is a new battery for the est100 and where do I buy it from

Excellent value

Searched the Web high and dry, these our most definitely the best e bikes for the money. Now clocked 500km still going strong.

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Great service, quick delivery

My first electric bike, really happy with it. Battery life so far has been great, especially in level 1 of assistance which is sufficient for me most of the time. Ordered and delivered within 5 days. A minor issue when delivered as the tool kit was missing but wasn't a problem as I had the right tools at home, the help desk explained how this probably occurred and sorted this right away, the kit was delivered by first class postage the next day.

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Upgrade Recommendations

Hello guys, I am intending to buy 2 of these bikesfor family members! Please can you advice me on what parts i should upgrade on the bike so it is 100% & avoid any problems from your reviews & From your experiences! Thank you


Great job done

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E bike

Amazing bike, such a smooth ride and has cut my journey to work by 15 minutes.

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I could never go back to the normal bike now. I must say it’s nice.After being at work and knowing you have this bike, it’s great knowing you have help getting home

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Additional Product informations



  • 100% Aluminium 6061


Motor co-developed with VISIONHub position (in the wheel)42 Nm torqueCadence sensorMax assistance: 250WThe electrical assistance cuts out above 25 km/h in accordance with EU regulations


Samsung SDI or LGCapacity: 380 WhOur battery supplier sources its minerals responsibly and sustainably, and is part of the "Responsible Minerals Initiative".


LCD control screen3 assistance modes: Eco / Standard / BoostStats displayed: Stopwatch / Current speed / Average speed / Maximum speed / Distance covered / Total distance / Battery level / Remaining battery range (in km) / Active assistance mode / Reset


S: 22.2 kgM: 22.3 kgL: 22.4 kgXL: 22.5 kgNet weight without pedals


ROCKRIDER COMFORT GEOMETRY FRAME in 6061 aluminium with hydroformed tubesSeat tube diameter: 31.6 mmStraight head tube1 bottle cage mounting point

Drive train

32 T chainring with chain guideMICROSHIFT MS25 8-speed rear derailleurCrank: 175 mmMICROSHIFT TS39 right shifter with speed indicatorMICROSHIFT H081 8-sprocket 11-34 T cassetteKMC Z7 chain


SUNTOUR XCT 30 forkTravel: 100 mmDampers: 30 mmAxle: QRFormat: 9 x 100 mm


Rockrider Tubeless Ready (needs tubeless tyres, special Presta valves and tyre sealant)27.5", compatible with wide tyres: up to 2.5"23 mm (width between hooks),28 spokes at the front and 36 oversize spokes at the rear6-bolt discFreehub: HG


Tektro TKD68Mechanical disc brakes1 piston180 mm front and rear

Riding position

ROCKRIDER SPORT "oversize" 720 mm wide alu handlebarThe Rockrider stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised to 5 adjustment intervals: + 0mm, + 7.5mm, + 15mm, + 22.5mm, + 30mm.ROCKRIDER SPORT "soft touch" grips

Saddle / seat post

ROCKRIDER ERGOFIT EVO saddleAluminium 31.6 mm seat post




Rockrider 520 Grip resin flat pedals


Your mountain bike comes with a bell, lighting, wheel reflectors, and pedals.The frame is compatible with:- front and rear mudguards- stand- bottle cage (on the top tube)- saddle bag- rear pannier rack (to be mounted on a stay or special rack for wide bikes with 150 mm rear wheel axles)- child seat

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