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Rockrider 27.5" Hardtail Electric Mountain Bike E-ST100

Price
Not published
United Kingdom
£799 Last known price
Fork travel
100 mm
Wheels
27.5″
Drivetrain
8 11–34t
Gear range
309%
Battery
380 Wh
Weight
22.5 kg 49.6 lb · Reference configuration not specified
Frame
Aluminum
Brakes
Mechanical disc

Not published by the manufacturer

  • Sizes and geometry

Components

7 of 12 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part
  • Frame

    ROCKRIDER COMFORT GEOMETRY FRAME in 6061 aluminium with hydroformed tubes Seat tube diameter: 31.6 mm Straight head tube 1 bottle cage mounting point Not identified

Electric system

4 parts
  • Battery

    Samsung SDI or LG Capacity: 380 Wh Not identified

  • Charger

    sector Not identified

  • Display

    LCD control screen 3 assistance modes: Eco / Standard / Boost Stats displayed: Stopwatch / Current speed / Average speed / Maximum speed / Distance covered / Total distance / Battery level / Remaining battery range (in km) / Active assistance mode / Reset Not identified

  • Motor

Specifications

Frame and fork

Intended fit
  • Unisex
Frame material
  • Aluminum
Bicycle weight
  • 22.5 kg
  • 49.6 lb

Suspension

Suspension configuration
  • Hardtail
Front travel
  • 100 mm

Drivetrain

Derived by Bikelake
Rear sprockets
  • 8
Smallest sprocket
  • 11
Largest sprocket
  • 34

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

100 mm

This value is within the central range for this class.

Cohort
Mountain / Cross-country Model year: 2025
Sample
1,507 bicycles with this information
Coverage
87.8% of the class

Shifting

Mechanical

222 of 1,647 bicycles with this information use electronic shifting.

Cohort
Mountain / Cross-country Model year: 2025
Sample
1,647 bicycles with this information
Coverage
95.9% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification This bicycle Rockrider 27.5" Hardtail Electric Mountain Bike E-ST100 Rockrider 27.5" Hardtail Electric Mountain Bike E-ST 100 Rockrider 27.5" Hardtail Electric Mountain Bike E-ST 500 Rockrider 27.5"+ Electric Hardtail MTB Bike E-ST 900 Rockrider 29" Hardtail Electric Mountain Bike E-EXPL 520 Rockrider 29" Hardtail Electric Mountain Bike E-Expl 700
Frame
Frame material Aluminum Aluminum Aluminum Not informed Aluminum Aluminum
Bicycle weight 22.5 kg 21.5 kg 22.8 kg 22 kg 23.7 kg 23.9 kg
Suspension
Front travel 100 mm 100 mm 120 mm 120 mm 130 mm 130 mm
Drivetrain
Rear sprockets 8 8 8 Not informed 8 Not informed
Smallest sprocket 11 11 12 11 Not informed Not informed
Largest sprocket 34 34 42 42 Not informed Not informed
Front chainrings Not informed Not informed 1 1 1 1
Smallest chainring Not informed Not informed Not informed 34 Not informed Not informed
Largest chainring Not informed Not informed Not informed 34 Not informed Not informed
Lowest gear Not informed Not informed Not informed 22.3 in Not informed Not informed
Highest gear Not informed Not informed Not informed 85.0 in Not informed Not informed
Brakes
Brake type Mechanical disc Mechanical disc Hydraulic disc Hydraulic disc Hydraulic disc Hydraulic disc
Cockpit
Seatpost Rigid seatpost Not informed Not informed Rigid seatpost Not informed Not informed
Electric bicycle systems
Battery capacity 380 Wh 380 Wh 420 Wh 599 Wh 500 Wh 630 Wh
Other specifications
Fork spring Coil Coil Coil Not informed Coil Air
Tire width 2.2″ 2.2″ 2.35″ 2.8″ 2.4″ 2.4″
Wheel size 27.5″ 27.5″ 27.5″ 27.5″ 29″ 29″

Other models in this family

6 models

Published versions from the same family and model year.

Rockrider 27.5" Hardtail Electric Mountain Bike E-ST100, by Rockrider

This bicycle

E-bike, Cross-country

27.5" Hardtail Electric Mountain Bike E-ST100

  • Weight: 22.5 kg
  • Suspension: 100 mm

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