2023 · Naked Bike · Buyer's Guide
SRK 400 (MY2023)
Stable, Sharp, Surprisingly Affordable
The Machine's Character
The SRK 400 is QJ Motor trying to prove it can build a small naked bike that feels finished on the road, not just on the spec sheet. The engine is a 400 cc liquid-cooled parallel twin with a 360-degree crank. It makes 41 hp at 9,000 rpm and 27 lb-ft at 7,500 rpm, and it sits in a steel trellis frame with an upside-down fork. The styling is sharp and aggressive, and the fit and finish are better than many riders expect from a Chinese-built bike. ABS, an LED headlight and a USB port come standard. Beyond that, the equipment stays deliberately simple.
On the road it feels bigger than its displacement. The chassis is planted and supportive, it stays composed at highway speed, and the front end tells you clearly what is going on. That calm comes with weight. At 410 lb (186 kg) wet it is heavy for a 400, and you feel it in quick direction changes. It favors smoothness over outright sharpness. Running costs are low, maintenance is simple, and 49 mpg gets good range from the 3.6 gal (13.5 L) tank. Keep an eye on the drive chain. For a rider who wants a well-made, good-looking twin for town and back roads, it makes sense.
Hard Numbers
Spec sheets don't ride bikes, but they set the baseline.
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| Power | 41 hp (30 kW) @ 9,000 rpm |
|---|---|
| Torque | 27 lb-ft (37 Nm) @ 7,500 rpm |
| Displacement | 400 cc |
| Engine | Parallel twin |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Final drive | Chain |
| Fork | Upside-down (USD) |
| Front brake | 260 mm |
| Front tire | 110/70-17 |
| Rear tire | 150/60-17 |
| Seat height | 30.9 in (785 mm) |
| Wet weight | 410 lb (186 kg) |
| Fuel capacity | 3.6 gal (13.5 L) |
| Top speed | 106 mph (170 km/h) |
| Fuel economy | 49 mpg (US) |
Equipment check
Chassis
- Rear Suspension Adjustable Standard
Connectivity
- USB Charging Port Standard
Lighting
- LED Headlight Standard
Safety
- ABS Standard
Known issues
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Chain noise
Some owners report unusual noise from the drive chain, potentially indicating early wear or alignment issues.
The Numbers Compared
Compare the technical specifications of the QJ Motor SRK 400 with other bikes in its class.
Head-to-head: QJ Motor SRK 400 vs. its rivals
Power
Torque
Displacement
Wet weight
Top speed
Seat height
Alternatives to the QJ Motor SRK 400
If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
Any price note compares both bikes at the same age — the youngest age both have on the used market — against this QJ Motor SRK 400. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.