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Two brown 140mm square fans with anti-vibration pads

Noctua

Noctua NF-A14x25 G2 PWM Sx2-PP Dual Fan Set Brown

SKU CH-CJK6-JJJMX

Dual 140mm PWM fans with speed offset for push-pull or side-by-side radiator cooling

  • Dual-fan kit avoids acoustic interference with offset speeds
  • Progressive-Bend impeller and Centrifugal Turbulator boost airflow precision
  • Sterrox LCP frame and ultra-tight tip clearance ensure quiet operation
  • SSO2 bearing rated beyond 150000 hours for long life
  • Includes mounts, gaskets, cables and Low-Noise Adaptors for versatile setup

Dual 140mm Fan Set for Push-Pull

This dual fan set contains two NF-A14x25 G2 PWM fans designed for push-pull radiator configurations and side-by-side mounting. The fans are slightly offset in speed by approximately 25 RPM to minimise acoustic interference. They suit 280mm water-cooling radiators, case intake, or exhaust roles. Builders needing only a single fan should consider individual units instead.

Progressive-Bend Impeller with AAO Frame

The Progressive-Bend impeller uses winglets and a Centrifugal Turbulator alongside Flow Acceleration Channels to maintain airflow under sustained load. The AAO frame structure supports ultra-tight tip clearance for consistent pressure delivery. Sterrox liquid-crystal polymer construction ensures dimensional stability during extended operation. The SSO2 bearing is rated beyond 150000 hours MTTF for long-term reliability.

Anti-Vibration Mounts and Y-Cable Included

Anti-vibration mounts and radiator gaskets reduce mechanical noise and improve sealing on 280mm radiators. A y-cable allows both fans to run from a single PWM header, simplifying cable routing. Low-Noise Adaptors and extension cables provide flexibility for speed limiting or distant headers. Reverse-polarity, over-voltage, and over-current protection guard the electronics during installation.

Highlights

  • Dual-fan kit avoids acoustic interference with offset speeds
  • Progressive-Bend impeller and Centrifugal Turbulator boost airflow precision
  • Sterrox LCP frame and ultra-tight tip clearance ensure quiet operation
  • SSO2 bearing rated beyond 150000 hours for long life
  • Includes mounts, gaskets, cables and Low-Noise Adaptors for versatile setup

Specifications

No published specifications for this item yet.

Questions about this item

How quiet is the 140 mm fan set during continuous all-day operation?

The two NF-A14x25 G2 PWM fans are slightly offset in speed by about 25 rpm to prevent acoustic interaction, and each uses a premium SSO2 bearing rated for over 150000 hours MTTF.

What motherboard header and accessories are required to run both fans together?

A single 4-pin PWM header is enough; the package includes a y-cable, extension cables and Low-Noise Adaptors so both fans connect to one header.

Will these 140 mm fans fit a 280 mm radiator I already own?

Yes, the 140x25 mm size matches standard 280 mm radiator mounts, and anti-vibration gaskets are supplied for a tighter seal on radiators.

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