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Cooler Master
Cooler Master MFX-B2NN-18NPK-R1 SickleFlow 120 V2 120mm case fan
A 120 mm case fan delivering up to 62 CFM airflow at 650–1800 RPM with 8–27 dBA noise and a sealed rifle bearing
- Fan Counts1 Fan
- Fan ControllerNo Controller
- TypeCase Fan
- CompatibilityCase
- Fan Size120mm
- Fan Thickness25mm
- All-black design suits stealth builds
- Revised curve blades raise airflow to 62 CFM max
- Enhanced frame cuts turbulent noise down to 8 dBA minimum
- Sealed rifle bearing blocks dust and oil leakage
- PWM control spans 650 to 1800 RPM for precise cooling
120mm PWM Case Fan
The Cooler Master SickleFlow 120 V2 is a 120mm case fan with a 4-pin PWM connector for automatic speed control. It uses a Rifle Bearing and runs between 650 and 1800 RPM to deliver up to 62 CFM of airflow. The all-black square frame and blades suit builders who want a stealthy appearance without LED lighting.
Motherboard Header and Mounting Check
Verify that your motherboard has a free 4-pin PWM header so the fan can report speed and respond to temperature curves. The unit measures 120 x 120 x 25 mm, so confirm your case or radiator has 120mm mounting holes with 25mm clearance. Four mounting screws are included in the package.
Quiet Builds and Radiator Use
This fan suits quiet-focused PCs and liquid-cooling radiators where low noise at idle and strong static pressure under load matter. The 8 to 27 dBA range keeps it subtle at low speeds. Buyers who need addressable RGB lighting or a bundled fan controller should look at other models.
Highlights
- All-black design suits stealth builds
- Revised curve blades raise airflow to 62 CFM max
- Enhanced frame cuts turbulent noise down to 8 dBA minimum
- Sealed rifle bearing blocks dust and oil leakage
- PWM control spans 650 to 1800 RPM for precise cooling
Specifications
| Brand | COOLER MASTER |
|---|---|
| Series | SickleFlow 120 V2 |
| Model | MFX-B2NN-18NPK-R1 |
| Fan Counts | 1 Fan |
| Fan Controller | No Controller |
| Type | Case Fan |
| Compatibility | Case |
| Fan Size | 120mm |
| Fan Thickness | 25mm |
| Bearing Type | Rifle Bearing |
| RPM | 650 - 1800 RPM +/- 10% |
| Air Flow | 62 CFM ( Max ) |
| Noise Level | 8 - 27 dBA |
| Power Connector | 4 Pin |
| Color | Black |
| Features | No Colors Needed: Signature cooling performance with an all-black design: a perfect choice for all of the users who want a simple, sleek, and stealthy look. New Blade Design: Revised curve blade design to improve airflow and air pressure. Enhanced Fan Frame: Enhanced frame structure, reducing turbulent flow noise increase efficiency. Sealed Bearing Structure: Sealed and secured fan bearing, preventing dust and lubricating oil leakage while increasing the fan’s operation stability and life span. |
| Dimensions | 120 x 120 x 25 mm |
| Package Contents | SickleFlow 120 4 x Screws |
| Shipping weight | 0.23 kg |
| Package size | 196 × 140 × 33 mm |
Questions about this item
What comes in the box with the SickleFlow 120 V2 and do I need to buy mounting hardware separately?
The package includes the fan and four screws, so no extra mounting hardware is required for a standard case or radiator installation.
Should I choose this 120 mm model or a different size for my build?
This model is a 120 mm fan with a 25 mm thickness; select it when your case or radiator has 120 mm mounting points.
How loud is the fan at its maximum 1800 RPM in a real system?
At 1800 RPM the noise level reaches 27 dBA, while at the minimum 650 RPM it drops to 8 dBA, giving a wide usable range.
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