This post explains what to expect from a QS 273 V4 200mm 6 AWG on an ONYX 80V, how it behaves with stock electronics, and what’s required to unlock its full potential.
It’s rummored that ONYX Motors is currently developing a larger motor similar to the QS V4 260 155mm 6 AWG, but designed for a 200 mm dropout to fit ONYX 80V rear swing arm properly.
For many riders, waiting for this option is a smart move.
An official ONYX motor will offer:
- Factory compatibility with ONYX frames and hardware
- Manufacturer warranty and direct support
- Known reliability and validated performance
- Community testing, tuning data, and real-world feedback
- Easier long-term parts availability
While the QS 273 is an excellent upgrade, an ONYX-approved motor removes much of the guesswork and risk that comes with custom installs. You gain the confidence of a supported platform, and a shared knowledge base from other owners running the same setup.
If your current motor is healthy and you are not in a rush, waiting for ONYX’s larger motor release may be the most practical and future-proof path forward.
QS 260 vs QS 273 on the ONYX 80V
The QS 260 V4 is the better overall match for the ONYX 80V thanks to its lighter weight, compact size, and nimble handling, which keeps the bike quick and responsive in city riding and canyon roads. It delivers strong torque and reliability on stock or lightly upgraded setups without overloading the suspension or frame.
The QS 273 V4, by comparison, is built for sustained high power, with much greater thermal capacity and durability under heavy loads, making it ideal for long mountain climbs, high speed riding, and aggressive controller and battery upgrades. In short, the 260 is the balanced performance choice, while the 273 is the heavy duty option for riders chasing maximum output and long term headroom.
| Feature | QS 260 V4 | QS 273 V4 |
|---|---|---|
| Weight | Lighter | Heavier |
| Size | More compact | Larger and bulkier |
| Handling | More nimble and agile | Slightly slower steering feel |
| Acceleration feel | Quick and responsive | Strong but heavier rotating mass |
| Thermal capacity | Very good | Excellent |
| Sustained mountain riding | Good | Excellent |
| High power builds | Moderate | Ideal |
| Stock 80V compatibility | Excellent match | Good but overbuilt |
| Suspension impact | Minimal | Higher unsprung mass |
| Controller requirements | Stock to mid-range | High-current recommended |
| Battery requirements | Stock to moderate upgrades | High-output packs preferred |
| Best use case | Daily riding, canyons, balanced builds | Extreme power, long climbs, future high-power setups |
QS Motor V4 273 200mm 6 AWG
The QS Motor V4 273 200mm 6 AWG is a direct-fit upgrade for the ONYX 80V with it’s 3.5-inch mag rim. When paired with the stock 80V battery and stock controller, it delivers a modest but noticeable performance gain of about 5%-10% using the factory tune.
What you gain with the stock setup
With the original battery and controller:
- The motor installs cleanly and fits properly
- Performance improves slightly (roughly 5%-10%)
- Torque delivery feels smoother and more consistent
- Reliability and thermals improve due to the larger motor mass
The larger stator and increased thermal mass make this motor especially well-suited for mountain and canyon riding. Long climbs and sustained throttle generate significant heat in smaller motors, which can lead to power fade or thermal limiting. The QS 273 handles this load more easily, staying cooler and maintaining consistent output over extended uphill pulls and aggressive riding.
No additional tuning is recommended in this configuration. The stock controller and battery already operate near their practical limits, and retuning will not meaningfully increase performance.
When the motor really comes alive
The QS 273 V4 is capable of far more than the stock system can provide.
To unlock its full potential, you need:
- A higher-current controller (such as a FarDriver 961000)
- A higher-output battery (Such as a AMORGE RS50 or EVE 50PL)
- Proper controller tuning
With these upgrades, the motor can deliver substantially more torque, stronger acceleration, and improved high-speed performance, well beyond what the stock 80V setup allows.
Summary
- Fits the ONYX 80V on a 3.5" mag rim
- Stock system gain: ~5%-10% performance
- No tuning recommended with stock battery and controller
- Major gains require controller and battery upgrades
Used on the stock platform, this motor is a solid refinement upgrade. Paired with higher-power electronics, it becomes a serious performance transformation.