Rockrider 27.5" Electric Mountain Bike E-ST 500

Name: Rockrider 27.5" Electric Mountain Bike E-ST 500
Brand: Rockrider

2025 MountainTrail Electric bicycle Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £1,299 Last known price
Fork travel: 120 mm
Wheels: 27.5″
Drivetrain: 1 × 8 12–42t
Gear range: 350%
Battery: 420 Wh
Weight: 22.8 kg 50.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Not published by the manufacturer

Sizes and geometry

Components

7 of 10 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 12x148 mm Boost Seat tube diameter: 31.6 mm Tapered head tube 1 bottle cage mounting point Not identified

Electric system

3 parts

Battery

Samsung SDI or LG Capacity: 420 Wh Not identified
Display

ERGO 500 3 assistance modes: Eco / Standard / Boost. Walk mode. Stats displayed: Active assistance mode / Battery level / Speed (current, average, max) / Remaining battery / Distance covered (total and trip) Not identified
Motor
- Brose

Suspension

1 part

Fork
- SR Suntour

Drivetrain

1 part

Rear derailleur
- microSHIFT Acolyte Rear Derailleur 8 Speed Medium Cage 8 speeds

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

Wheels and tires

2 parts

Cockpit and contact points

1 part

Pedals
- Rockrider

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 22.8 kg

50.3 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Rear sprockets: 8
Smallest sprocket: 12
Largest sprocket: 42

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Shifting: Mechanical

Electric system

Battery capacity: 420 Wh

Additional specifications

Battery: Samsung SDI or LG Capacity: 420 Wh
Fork spring: Coil
Tire width: 2.35″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

2 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Shifting

Mechanical

387 of 1,847 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,847 bicycles with this information
Coverage: 99.6% 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
Specification	This bicycle Rockrider 27.5" Electric Mountain Bike E-ST 500	Rockrider Women's 27.5" Electric Mountain Bike E-ST 500
Frame
Intended fit	Unisex	womens
Bicycle weight	22.8 kg	22.5 kg
Cockpit
Seatpost	Not informed	Rigid seatpost
Other specifications
Battery	Capacity: 420 WhSamsung SDI or LG Capacity: 420 Wh	Capacity: 420 WhSamsung SDI or LG Capacity: 420 Wh Our battery supplier sources its minerals and, and is part of the "Minerals Initiative".