CFMoto NK
Coolant capacity & service interval
CFMoto NK uses coolant with a capacity of 0,9 liter. The service interval for coolant is 24 months. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 650NK (2021- ) |
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| 400NK (2017-2022) |
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| 650NK (2017-2020) |
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Additional Notes
- The CFMoto NK cooling system capacity of 0.9 liter applies across the 400NK (2017-2022), 650NK (2017-2020), and 650NK (2021- ) configurations, indicating a consistent system volume despite the difference in engine displacement between the 400 and 650 variants.
- A 0.9 liter coolant capacity is a relatively modest figure, consistent with the compact liquid-cooled systems found on mid-displacement naked motorcycles, where the radiator and passage volume are sized to match engine heat output rather than maximized for reserve capacity.
- The 650NK from 2021 onward carries a specified coolant change interval of 24 months under normal use conditions, meaning the fluid is scheduled for replacement on a time-based cycle rather than a mileage-based one.
- The 400NK (2017-2022) and 650NK (2017-2020) rows list only a capacity value with no change interval specified, while the 650NK from 2021 onward includes both a capacity and a 24-month service interval, representing a difference in the depth of service data between the earlier and later configurations.