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Black square 120 mm case fan with ARGB lighting and transparent curved blades

Cooler Master

Cooler Master MFX-B2DN-18NPA-R1 SickleFlow 120 V2 ARGB 120 mm case fan

SKU CH-EZ5S-HWV2P MPN MFX-B2DN-18NPA-R1

120 mm PWM case fan with addressable RGB lighting, sealed rifle bearing and a revised curve blade design delivering up to 62 CFM airflow at 650–1800 RPM while staying between 8 and 27 dBA

  • Fan Counts1 Fan
  • Fan ControllerNo Controller
  • TypeCase Fan
  • CompatibilityCase
  • Fan Thickness25mm
  • Bearing TypeRifle
  • Individually addressable RGB lets you customise every LED
  • Revised curve blades deliver 62 CFM maximum airflow
  • Sealed rifle bearing blocks dust and oil leakage for longer life
  • PWM control spans 650 to 1800 RPM for quiet or high-performance modes
  • Enhanced frame cuts turbulent noise down to 27 dBA

120 mm ARGB case fan

The Cooler Master SickleFlow 120 V2 ARGB is a single 120 mm case fan with addressable RGB lighting and a 4-pin PWM connector. It uses a rifle bearing and revised curve blades to deliver up to 62 CFM airflow between 650 and 1800 RPM. The 25 mm thick black frame fits standard case and radiator mounts.

Replaces basic fixed-speed fans

Builders moving from non-PWM or single-colour fans gain automatic speed control across a 650 to 1800 RPM range and per-LED ARGB customisation. The sealed bearing structure reduces dust ingress and oil leakage, extending service life over open-bearing designs. The jump is worth it when both lighting control and quieter low-speed operation matter.

Suits ARGB builds with standard mounts

This fan suits systems that use a 4-pin PWM header and a 5 V ARGB header for lighting synchronisation. Builders needing higher static pressure for dense radiators or fans without ARGB headers should look at alternatives. Users without PWM or ARGB motherboard connectors cannot use the fan's speed or lighting features.

Highlights

  • Individually addressable RGB lets you customise every LED
  • Revised curve blades deliver 62 CFM maximum airflow
  • Sealed rifle bearing blocks dust and oil leakage for longer life
  • PWM control spans 650 to 1800 RPM for quiet or high-performance modes
  • Enhanced frame cuts turbulent noise down to 27 dBA

Specifications

BrandCOOLER MASTER
SeriesSickleFlow 120 V2 ARGB
ModelMFX-B2DN-18NPA-R1
Fan Counts1 Fan
Fan ControllerNo Controller
TypeCase Fan
CompatibilityCase
Fan Thickness25mm
Bearing TypeRifle
RPM650 - 1800 RPM +/- 10%
Air Flow62 CFM ( Max )
Noise Level8 - 27 dBA
Power Connector4-Pin (PWM)
ColorBlack
LEDAddressable RGB
FeaturesARGB Lighting: Signature cooling performance with an ARGB design: a perfect choice for all of the users wanting lighting effects that are individually customizable.
New Blade Design: Revised curve blade design to improve airflow and air pressure. A refreshed blade for improved lighting.
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.
Dimensions120 x 120 x 25 mm
Package ContentsSickleFlow 120
4 x Screws
Controller
Shipping weight0.24 kg
Package size193 × 142 × 33 mm

Questions about this item

Will the 120 mm square frame and 25 mm thickness fit my case fan mounts?

The fan measures 120 x 120 x 25 mm, matching the standard 120 mm mounting pattern used by most cases and radiators.

How do I connect the 4-pin PWM and ARGB cables without them coming loose?

Plug the 4-pin PWM header into the motherboard fan header and the 3-pin 5 V ARGB connector into the motherboard ARGB header; the supplied clip locks both ends in place.

When should I clean or replace the rifle bearing fan?

The sealed two-tier bearing blocks dust and oil loss, so only occasional external dusting is needed; replace if noise rises above 27 dBA or RPM drops below 650.

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