Noctua NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler

Noctua NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler

Q: Would these fan clips work for the u12p? I have the heat sync but no fan clips. Since im not the original owner I cannot get them from noctua.

Since this was designed as an add on fan for the Noctua NH-U12S redux cooler, the clips will be compatible with the other Noctua NH-U12S coolers. Diagrams of these coolers can be found at the Noctua website showing the exact dimensions.

Q: Does the fan have a cfm rating? (i don't see cfm on noctua.at specs)

This is a replacement part for the u12s cooler which commonly has a fan of a cfm rating of 70.60 so I'm guessing that's it

Q: Hi,does it work with cooler master hyper 212 evo ??

yeah but you'll need the brackets that came with the 212

Product ID: 301389175

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Details

Product dimensions
15.4L x 13.9W
Brand
Noctua
Power connector type
4-Pin
Voltage
12 Volts
Cooling method
Air
Compatible devices
Desktop

🔇whisper-quiet at idle

⚙️PWM auto speed control

🌡️1-3°C cooler temps

Frequently Bought Together

Noctua NA-FK1 Redux, Second Fan Upgrade Kit for NH-U12S Redux Cooler

ARCTIC MX-4 (4 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive

Description

❄️ Upgrade your cool game—because your CPU deserves the chill life!

SILENT EFFICIENCY - Run both fans at lower speeds with Low-Noise Adaptors for near-silent operation without compromise.
OVERCLOCKING READY - Cut temps by up to 3°C under heavy loads—perfect for turbo modes and high-TDP CPUs.
SMART SPEED CONTROL - PWM fan automatically adjusts airflow based on workload, balancing cooling and noise seamlessly.
COMPLETE UPGRADE KIT - Includes fan, anti-vibration pads, mounting clips, PWM y-cable, and noise adapters for easy installation.
DUAL FAN POWER BOOST - Transform your NH-U12S redux into a push/pull powerhouse for peak cooling performance.

The Noctua NA-FK1 redux is a premium second fan upgrade kit designed to convert the NH-U12S redux cooler into a push/pull dual-fan setup. It delivers up to 3°C lower CPU temperatures under heavy loads, features a high-quality NF-P12 redux-1700 PWM fan with automatic speed control, and includes Low-Noise Adaptors for near-silent operation. The kit comes complete with all necessary mounting accessories, making it an essential upgrade for professionals seeking enhanced cooling performance and quieter operation.

Specifications

Manufacturer	Noctua
Part number	NA-FK1redux
Item Weight	100 g
Product Dimensions	15.4 x 13.9 x 4.9 cm; 100 g
Item model number	NA-FK1redux
Colour	Black
Material	Fibre-glass reinforced PBT
Voltage	12 Volts
Item Package Quantity	1
Special Features	shock_resistant
Included components	1 product
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Would these fan clips work for the u12p? I have the heat sync but no fan clips. Since im not the original owner I cannot get them from noctua.

Does the fan have a cfm rating? (i don't see cfm on noctua.at specs)

Hi,does it work with cooler master hyper 212 evo ??

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