ROCKRIDER 27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 2023
Bike details
Key information split into simple groups.
Bike summary
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Category
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Frame Aluminum
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Wheels 27.5"
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Travel Front 100mm
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Fork Suntour X1
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Groupset microSHIFT Mezzo
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Suspension Hardtail
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Motor 250W 42Nm hub-drive
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Battery Rockrider battery with external mount, Tool-free quick-release system with lock. Capacity: 380 Wh
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Brakes Mechanical Disc
Parts list
Main components, grouped by system.
Bike components
Frame
Frame
ROCKRIDER COMFORT GEOMETRY FRAME made of 6061 aluminium with hydroformed tubes Size S optimised for easier step-through. Straight head tube 31.6 mm diameter seat tube 1 bottle cage mount
Suspension Fork
SUNTOUR XCT 30 fork Travel: 100 mm Dampers: 30 mm Axle: QR Format: 9 x 100 mm
Drivetrain
Rear Derailleur
32 T chainring with chain guide MICROSHIFT MS25 8-speed rear derailleur Crank: 170 mm MICROSHIFT TS39 right shifter with speed indicator MICROSHIFT H081 8-sprocket 11-34 T cassette KMC Z7 chain
Pedals
Rockrider Flat Evo Resin
Wheels
Rims
Rockrider 27.5" wheels 27.5" size compatible with fat tyres: up to 2.5" 23 mm (width between hooks), 28 spokes at the front and 36 oversize spokes at the rear 6-bolt disc Cassette body: HG Sealed rim strip (requires TUBELESS tyres, PRESTA valves, and tyre sealant)
Tires
ROCKRIDER ALL TERRAIN LIGHT (60 TPI) wide 2.2" tyres
Brakes
Brakes
Tektro TKD68 Mechanical disc brakes 1 piston 180 mm front and rear
Motor & Battery
Motor
Rear motor position (in the wheel) 42 Nm torque Pace sensor Max assistance 250W In accordance with EU regulations, the electrical assistance cuts out above 25 km/h
Battery
Rockrider battery with external mount, Tool-free quick-release system with lock. Capacity: 380 Wh
Fit data
Numbers for sizing and ride feel.
| Size | SM | MD |
|---|---|---|
| Wheels | 27" | 27" |
Model Overview
27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 is a Rockrider E Semi Rigid model. 1 e-bike variation carries this model name so far.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Average price for Crosscountry e-bikes
Our math shows that the average cost of a dependable Crosscountry e-bike is 2453$. However, this doesn’t mean that if you spend less money on a Crosscountry e-bike, you couldn’t get a decent one. To sum up, when you purchase your e-bike, make sure to check if it has reviews, and also do some components research.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 1338$. Comparing the average cost of a Crosscountry e-bike to this one, you will see that 27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 price is 83.33% smaller.
Crosscountry e-bikes average weight
On a deeper look, we notice that the average weight of a Crosscountry e-bike is 23.21 kg (51.17 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
Weighing 21.5 kg (47.4 lbs), the 27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 model is a bit lighter than average. In short, the average Crosscountry e-bike weight is 7.95% higher than this one.
27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 components
Fork
This e-bike has the Suntour X1 fork installed. The fork’s travel is 100mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Wheels size
When leaving the production line, the 27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 model has 27.5″ aluminum wheels. These wheels will provide you with more control over the e-bike. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The 27.5″ Semi-Rigid Electric Mountain Bike E-ST 100 comes with Mechanical Disc brakes. These brakes are also very popular, and a lot cheaper than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.
