Rockrider E-ST 100
Photos: Decathlon. See more on Decathlon

e-MTB · Rockrider

Rockrider E-ST 100

The entry point to Decathlon's electric mountain bikes: hardtail, simple and the cheapest in the range. Perfect for tracks and dirt roads, not for technical trails.

4,9
Editor's ratingAverage of 6 criteria with a public formula. How we score
  • Motor torque42 Nm
  • Battery380 Wh
  • Range—
  • Weight21,5–22,5 kg depending on source and size
Reference price999,99 €Price published on the decathlon.es product page (checked in November 2026). It may have changed: check it on Decathlon.
Buy on Decathlon

Check availability and the current price on Decathlon.

Review

It is Decathlon's most affordable e-MTB and one of its best sellers. Its 42 Nm rear-wheel motor helps on track climbs but falls short on very steep ramps.

The mechanical disc brakes and Suntour fork do the job on trails and forest tracks. For technical descents or rocky trails, a higher-end bike is a better idea.

Independent tests agree it is a good way to get started, with clear limits for more demanding use.

Pros

  • The cheapest e-MTB in the range
  • Simple and easy to maintain
  • Enough for tracks and trails

Cons

  • 42 Nm rear motor: tight on steep ramps
  • Mechanical, not hydraulic, brakes
  • No rear suspension
Ideal for

People starting out in mountain biking who will ride tracks and trails without much technical difficulty.

Recommended terrain

Forest tracks, trails and moderate climbs.

Value for money

6,7 / 10 (estimated from the scores and the reference price).

How many km will you get?

Indicative estimate with our formula based on the 380 Wh battery (how we calculate it). Not a manufacturer figure.

Assist mode
Terrain
Estimated range—

Spec sheet

Each figure shows where it comes from: Official Decathlon or manufacturer, Press specialist media, Test independent test, Shop third parties. “—” means we have not found a reliable figure.

Rockrider E-ST 100 spec sheet
Motor
MotorRear hub motorPress 1
Motor positionRear hubPress 1
Rated power250 WPress 1
Motor torque42 NmPress 1
Max. assisted speed25 km/hOfficial 2
Battery
Battery380 WhPress 3
Removable battery—No data
Claimed range—No data
Charging time—No data
Frame & components
Weight21,5–22,5 kg depending on source and sizePress 4
FrameHardtail, battery on the down tubePress 4
Material—No data
SuspensionSuntour front forkPress 4
BrakesTektro mechanical disc, 180 mmPress 4
DrivetrainMicroshiftPress 4
Wheels—No data
Sizes—No data
  1. 1 Press InsideEVs: Rockrider E-ST 100
  2. 2 Official EU e-bike regulation (EPAC): assistance up to 25 km/h
  3. 3 Press Motor.es: Rockrider Ebike ST 100
  4. 4 Press Híbridos y Eléctricos: Rockrider E-ST 100

Owner reviews

We do not yet have a reliable summary of owner reviews for this model. You can read them on the Decathlon product page.

Independent tests

Buy on Decathlon Price, sizes and availability on decathlon.es
Rockrider E-ST 100Rockrider E-ST 100999,99 € (ref.)Buy on Decathlon

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