2021
Rockrider - E-ST900
Mountain · E-Bike · Trail · Womens
Groupset Deore
Weight NULL kg
Wheel size 27.5
Tires So You Feel Safe On An...
Brake type Hydraulic Disc
See all specifications ↓
RRP
Observed price — New
Refurbished price
1 199 € incl. taxes
1 price points
Min: 1234 € (XXXXXXXXX)
Max: 1234 € (XXXXXXXXX)
Likely trade-in value
1 234 €
rockrider E-ST900
About this bike

Looking at the Rockrider E-ST900 2021? This mountain bike in the trail segment with electric pedal assistance keeps showing up across European retailers.

The 1 sources we monitor for this bike refresh daily — that is how 2BX keeps the catalog and resale benchmarks honest.

Price-wise, brands list the E-ST900 at MSRP. Real listings for a new unit hover around, and refurbished units typically sell near 1 199 €.

Browse the live offers below or jump to the similar bikes section to compare the Rockrider E-ST900 with its closest rivals.

Bikes currently in the market or recently sold
Retailer Image Link Model Year Condition Price RRP Discount Status Country Last seen First seen Online for Similarity E-Bike Groupset Mileage Size Brake type Frame material Wheel size Motor Torque Battery capacity Category
Retailer Link ST 900 S 2021 Refurbished 1 234 € 1 234 € -20% On sale Europe 2026-07-13 2026-06-15 28 Related Yes Other M Disco Aluminium 27.5 Mtb
Retailer Link E-ST 900 2020 Refurbished 1 234 € 1 234 € -20% On sale France 2026-06-22 2026-06-22 0 Similar match Yes Shimano Deore 988.0 170 cm – 185 cm 50 Nm 500 Wh
Retailer Link E-ST 900+ 2023 Refurbished 1 234 € 1 234 € -20% On sale France 2026-06-14 2026-06-14 0 Related Yes Shimano Deore 374.0 167 cm – 180 cm 70 Nm 504 Wh
Retailer Link ST 900 S 2021 Refurbished 1 234 € 1 234 € -20% On sale Europe 2026-06-08 2026-05-11 28 Related Yes Other S Disco Aluminium 27.5 Mtb
Retailer E-ST 900 2020 Refurbished 1 234 € 1 234 € -20% Sold France 2026-07-07 2026-06-27 10 Similar match Yes 50 Nm 500 Wh
Retailer ST 900 S 2021 Refurbished 1 234 € 1 234 € -20% Sold Europe 2026-06-27 2026-05-11 47 Related Yes Other M Disco Aluminium 27.5 Mtb
Retailer ST 900 S 2021 Refurbished 1 234 € 1 234 € -20% Sold Europe 2026-06-21 2026-06-08 13 Related Yes Other M Disco Aluminium 27.5 Mtb
Retailer ST 900 S 2024 Refurbished 1 234 € 1 234 € -20% Sold Europe 2026-06-01 2026-05-05 27 Related Yes Other L Disco Aluminium 27.5 Mtb
Brand Market Footprint

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Specifications
CategoryMountain
SubcategoryTrail
Year2021
ForkRide over obstacles (roots, pebbles, stones, etc.) easily than...
WeightNULL kg
SuspensionHardtail
TravelNULL
Sizes XXXXXXXX
Components
Groupset Deore
Crank The E-ST900 electric bike is equipped with a single chainring and ChainFlow 3D anti-drop technology to prevent chain drops. A single shifter on the right handlebar makes it easy to shift between the 10 speeds. In detail: - ChainFlow anti-derailment 34-tooth chainring - SHIMANO DEORE M6000 Shadow+ 10-speed rear derailleur with long cage - SHIMANO DEORE M6000 right shifter - SHIMANO DEORE 10-cog cassette (11-42 teeth) - KMC E10 Turbo special e-bike chain
Brake type Hydraulic Disc
Brakes No matter the conditions you ride in ,dry, muddy, wet), the Tektro TKD32 hydraulic disc brakes on the front and rear provide powerful, progressive braking. Oversized 180mm diameter discs provide even more power.
Wheels & Tires
Wheel size 27.5
Tires So you feel safe on any terrain, and to provide traction suited to your motor, the E-ST900 mountain bike is equipped with Hutchinson Taipan Koloss 27.5+ tyres with a 2.8" cross-section. Our test riders particularly liked these tyres for their grip on the ground. Mounted on wide rims, these tyres provide great grip, traction, and comfort on any terrain.
Tire width 2.8"
E-Bike
Motor torque 70 Nm
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