Oxiis Intelligent Bike Booster
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Photo of the ASUS Oxiis E250G1 intelligent bike booster.

ASUS Oxiis E250G1

Ride Easy. Explore More.

Oxiis is a universal, friction-drive motor system that transforms any conventional bicycle into a smart e-bike. Its name fuses the Greek Oxis (agility) and Axis (pivot)—perfectly reflecting how its high-performance drive core delivers ultimate acceleration and instant, nimble responsiveness right to your ride.

Focus on essentials

Adaptive boost technology

Precisely detects inclines, providing seamless assistance for effortless climbs.
Photo of a girl riding a bike up a slope with the help of the bike booster.

Peak power 500W

Instant burst, effortlessly conquering challenging terrains, making every ride easier.
Image of an electric motor capable of reaching 500 watts of peak power.

Wireless cadence sensor

Ditch the wires. Simple to install, smart to ride.

Smart brake-detecting taillight

Enhances night visibility and safety, safeguarding your journey.
A Oxiis bike booster kit on a wooden tabletop, showing its compact design and drive wheel.

Design

Simple design. Impressive benefits.

The ASUS Oxiis E250G1 designed with the user in mind: minimum structure, maximum utility. Every detail is meticulously crafted to elevate your daily experience, delivering seamless interaction and a functional masterpiece of premium quality and beauty.

Premium aluminum construction

Built to last with high-grade, rugged materials.

Anti-slip technology

Dynamically pressure automatically grips the tire for efficient, slip-free power transfer.

Easy installation

Quick transformation. Zero modifications to gears or brakes.

Efficient heat dissipation

Reduced risk of overheating.

Battery

Removable modular battery

Easy to charge and swap, offering ultimate freedom for your journey.
A sleek black battery pack with an integrated tail light is mounted on the rear rack of a bicycle.
100W USB-C® PD
2 hours fast charge
158 Wh
battery capacity
Airplane-friendly icon
Flight-safe for carry on luggage (Requires airline approval priority to flying)

Compatibility

Universal design, perfect fit

ASUS Oxiis E250G1 works with a wide range of bike frame types, including city, road, gravel, and folding bikes, as well as hybrid or hardtail mountain bikes.
On the left image, a man in a blue suit and a helmet rides a bicycle past a modern building. On the right image, a city bike with the oxiis installed.

Accommodates

Find your fit

To guarantee optimal performance, seamless installation, and maximum safety, please double-check that your bike’s specific tire width, wheel size, and seat post measurements fully meet our criteria before your first setup.

Tire width

Supports tire widths up to 60 mm.
Supports tire widths up to 60 mm.

Tire size

Compatible with tire sizes from 16 to 29 inches, plus 700C.
Compatible with tire sizes from 16 to 29 inches, plus 700C.

Seat post

Fits 25.4-34.9 mm posts (spacers included).
Fits 25.4-34.9 mm posts (spacers included).

Installation Guide

Easy installation

No complex tools are needed to install ASUS Oxiis E250G1.

App

ASUS Oxiis app

Three modes. One seamless experience.
Switch modes effortlessly using the integrated button or dedicated app.
The Eco mode icon
Eco mode: Efficient support for flat terrain and tailwinds.
The Normal mode icon
Normal mode: Smooth, balanced power for everyday adventures.
The Sport mode icon
Sport mode: Instant boost for steep climbs and high-speed performance.
A hand holding a smartphone showing a cycling app interface with speed and battery status.
A person in a suit riding a bicycle equipped with an Oxiis bike booster.

Spec

Product Specifications

Motor Power
250W (Rated) / 500W (Peak)
Range
50 km (31 miles) in eco mode
Battery
158.4 Wh / 36 V
Weight
3.7 kg (including battery)
Dimensions
400 x 84 x 128 mm (L x W x H)
Max Speed
32 km/h (Limited to 25 km/h in specific regions)
Charging Time
2 hours (100W PD Charger required)
Waterproof Rating
IPX4
App Compatibility
Android & iOS

FAQs

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Will the ASUS Oxiis E250G1 fit my bike?
The ASUS Intelligent Bike Booster offers broad compatibility, fitting most city, road, gravel, and folding bikes. It is also suitable for hardtail mountain bikes. Please note, it is not compatible with full-suspension models.
Which tire types are compatible with the ASUS Oxiis E250G1?
The product is compatible with Slick, Semi-slick, and Textured tire surfaces. For optimal performance and safety, Knobby tires are not recommended.
Can I install the ASUS Oxiis E250G1 on a carbon fiber seat post?
No, for safety reasons and to prevent potential damage, this product should not be installed on carbon fiber seat posts.
What is the ASUS Oxiis E250G1's water resistance rating?
The ASUS Oxiis E250G1 is rated IPX4 for water resistance, meaning it is protected against splashing water from any direction. This makes it suitable for use in light rain, but it should not be exposed to heavy rain or submerged in water.
How far can I ride with the ASUS Oxiis E250G1 on a full charge?
The range varies depending on factors such as rider effort, terrain, and the assist mode selected. You can expect a range of approximately 10 km (Sport Mode) to 50 km (Eco Mode).
How long does it take to fully charge the ASUS Oxiis E250G1's battery?
A full charge for the 158 Wh battery typically takes approximately 2 hours using the provided 100W USB-C PD charger.
How can I change between the three assist modes?
You can easily switch between the three assist modes directly on the booster unit itself, or conveniently via the ASUS Oxiis app on your smartphone.
How do I clean and maintain the ASUS Oxiis E250G1?
To clean your booster, simply wipe it down with a clean, damp cloth. Do not wash it directly with water or use harsh detergents. For detailed maintenance instructions, please refer to the user manual.
  1. Download the user manual from the app or ASUS support site and use the product only according to the user manual. Failure to follow instructions or warnings in the user manual may result in damage to the product or damage to other objects and personnel in the vicinity. Users are responsible for any operation of the product, and should follow the safety guidelines, including, but not limited to in the user manual.
  2. Regulatory Compliance Responsibility:By purchasing and installing the ASUS Oxiis E250G1, the user agrees to independently understand and comply with all local traffic laws, right-of-way regulations, and speed limits.
  3. Modification and Safety Risks:Prior to installing this product, please ensure that the bicycle structure (including the seatpost, frame strength, and braking system) is in normal and safe condition. The Company assumes no legal liability for any vehicle damage, personal injury, or legal fines resulting from improper installation, exceeding the bicycle’s weight limit, or unauthorized modifications.
  4. Limits and Modification Restrictions:Do not attempt to modify the power output or speed limit settings of this product using unauthorized third-party software or hardware. Any unauthorized modification will void the product warranty and may cause the vehicle to non-comply with road safety standards.
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  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB color and bundled software versions are subject to change without notice.
  • Brand and product names mentioned are trademarks of their respective companies.
  • The terms HDMI and HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.