The Propella 9S Pro V2 is an electric bike aimed at urban commuters. It is a Class 1 e-bike, meaning it has a pedal-assist system only and a maximum speed of 20 mph (32 km/h). Despite the lack of a throttle, reviewers praise its smooth and responsive power delivery thanks to a critical feature: a torque sensor.
Standing out with a torque sensor
Unlike cadence sensors in many budget e-bikes, the 9S Pro V2 uses a torque sensor, translating to a more natural riding experience. Cadence sensors detect pedalling and provide electric assist regardless of how hard you pedal. Torque sensors, on the other hand, measure the force you apply and adjust the electric assist accordingly. The result is a bike that feels more intuitive and responsive, providing more power when you push harder and easing off when you ease up.
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Lightweight and feature-packed for commutes
The Propella 9S Pro V2 is lightweight for an e-bike, weighing just 43.5 lbs (19.7 kg), achieved through a 350W brushless geared hub motor and other strategic component choices. Propella offers the 9S Pro V2 in traditional and step-thru frame styles, making it accessible to a broader range of riders.
The Propella 9S Pro V2 is equipped for comfortable and efficient commuting. Powering the ride is a 350W nominal, 500W peak power brushless geared hub motor. This motor is integrated seamlessly into the frame and provides a smooth electric assist. The integrated battery offers a variable range depending on usage, but riders can expect to travel for several miles on a single charge.
Shimano provides a reliable 9-speed drivetrain, offering a wide range of gears to tackle hills and maintain comfortable pedalling cadences on flat terrain. The single-sided 42-tooth front chainring simplifies the drivetrain and reduces maintenance needs, while the 11-36T cassette offers a good spread of gear ratios.
Hydraulic disc brakes with 160mm rotors ensure confident stopping power in all weather conditions. Rolling stock consists of sturdy 27.5″ wheels wrapped in CST Brooklyn Pro tyres, providing a good balance of grip and comfort.
Rounding out the feature set are fenders that keep you dry on wet commutes, a front light for added visibility, adjustable handlebars for a personalised fit, and a convenient kickstand for easy parking.
Propella 9S Pro V2 reviews point to a solid commuter option.
Reviews for the Propella 9S Pro V2 are generally positive. Many reviewers highlight the following as its strengths:
The Propella 9S Pro V2 shines in several ways, making it a compelling choice for commuters. First and foremost, the torque sensor elevates the riding experience by offering a smooth and natural response to your pedalling, which contrasts with cadence sensors on many e-bikes, which can feel jerky or unresponsive.
Because of its lightweight design, the 9S Pro V2 is easy to move and store in compact locations, unlike bigger e-bikes.
Furthermore, it punches above its weight in terms of value. At $1299 (on sale price as of March 2024), it boasts features typically seen on more expensive e-bikes, such as hydraulic disc brakes that deliver confident stopping power in all weather conditions. Fenders and a front light complete the package, making the 9S Pro V2 ready for commuting straight out of the box.
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Some reviewers mentioned a few minor drawbacks:
While the Propella 9S Pro V2 shines in many areas, there are a few limitations. Riders who prefer the option of throttle control alongside pedal assist might find the need for a throttle a dealbreaker. Additionally, the 20 mph speed limit may be restrictive for those needing an e-bike to keep up with faster traffic. The colour display can also be challenging to see in direct sunlight, which could inconvenience some riders. Finally, the frame size might not be ideal for riders much taller than 5’10”, so it’s essential to consider your height before purchasing.
The Propella 9S Pro V2 seems compelling for urban riders seeking a lightweight, feature-rich, affordable electric commuter bike. The torque sensor is a significant upgrade over cadence sensors found in many similarly priced e-bikes, and the overall package makes it a strong contender for your daily rides.