---
product_id: 301389175
title: "NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler"
brand: "noctua"
price: "€ 50.40"
currency: EUR
in_stock: true
reviews_count: 12
category: "Noctua"
url: https://www.desertcart.com.cy/products/301389175-na-fk1-redux-second-fan-upgrade-kit-for-nh-u12s
store_origin: CY
region: Cyprus
---

# Low-Noise Adaptors for silent ops 1-3°C cooler temps 1700 CFM airflow NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler

**Brand:** noctua
**Price:** € 50.40
**Availability:** ✅ In Stock

## Summary

> ❄️ Upgrade your cool game — because your CPU deserves the chill.

## Quick Answers

- **What is this?** NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler by noctua
- **How much does it cost?** € 50.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/301389175-na-fk1-redux-second-fan-upgrade-kit-for-nh-u12s)

## Best For

- noctua enthusiasts

## Why This Product

- Trusted noctua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Upgrade:** Complete kit with PWM y-cable and all essentials for effortless installation and instant performance gains.
- • **Dual-Fan Power Boost:** Transform your NH-U12S redux into a push/pull powerhouse for peak cooling performance.
- • **Whisper-Quiet Control:** PWM fan with Low-Noise Adaptors lets you dial down noise without sacrificing airflow.
- • **Precision Thermal Drop:** Slash CPU temps by up to 3°C, perfect for overclockers and high-TDP rigs.
- • **Vibration-Free Stability:** Includes anti-vibration pads and secure mounting clips for ultra-smooth, silent operation.

## Overview

The Noctua NA-FK1 redux is a premium second fan upgrade kit designed to enhance the NH-U12S redux cooler with a push/pull dual-fan setup. Featuring a high-quality NF-P12 redux-1700 PWM fan, it delivers up to 1700 CFM airflow with automatic speed control for optimal cooling and whisper-quiet operation. The kit includes Low-Noise Adaptors to reduce fan speed for near-silent performance, anti-vibration pads, mounting clips, and a PWM y-cable, enabling a straightforward installation that can reduce CPU temperatures by 1-3°C, especially under heavy loads or overclocking scenarios.

## Description

Noctua NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler : desertcart.co.uk: Sports & Outdoors

Review: Not quite 20% cooler ;) - 2-3*C cooler. Worth the money, especially when you look at the price of the fan on it's own.
Review: Quality made - Nice addition to my build

## Features

- Upgrades the NH-U12S redux to a push/pull dual-fan configuration for improved performance or lower noise levels when running both fans at lower speed
- Can reduce temperatures by 1-3°C, especially on higher heat-loads such as during turbo use, on overclocked systems or higher TDP processors
- Second high-quality NF-P12 redux-1700 PWM fan supports automatic speed control via the motherboard, can provide massive airflow at load and run whisper-quiet at idle
- Low-Noise Adaptors allow the maximum fan speed to be reduced from 1700 to 1300rpm for near-silent operation
- Includes 1x NF-P12 redux-1700 PWM fan, 4 anti-vibration pads, 1 pair of fan mounting clips, 1x 4-pin PWM y-cable and 2x Low-Noise Adaptors

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08WQ6HT24 |
| Air Flow Capacity | 1700 Cubic Centimetres Per Minute |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 78,450 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 407 in Kids' Play Trucks 16,520 in Camping & Hiking |
| Colour | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (916) |
| Date First Available | 1 Mar. 2021 |
| Included components | 1 product |
| Item Package Quantity | 1 |
| Item Weight | 100 g |
| Item model number | NA-FK1redux |
| Manufacturer | Noctua |
| Material | Fibre-glass reinforced PBT |
| Part number | NA-FK1redux |
| Product Dimensions | 15.4 x 13.9 x 4.9 cm; 100 g |
| Special Features | shock_resistant |
| Voltage | 12 Volts |

## Product Details

- **Air flow capacity:** 1700 Cubic Centimetres Per Minute
- **Brand:** Noctua
- **Compatible devices:** Desktop, Laptop, Other Electronic Devices
- **Cooling method:** forced air
- **Manufacturer:** Noctua
- **Material:** Fibre-glass reinforced PBT
- **Maximum rotational speed:** 1700 RPM
- **Power connector type:** 4-Pin
- **Product dimensions:** 15.4L x 13.9W x 4.9H centimetres
- **Voltage:** 12 Volts

## Images

![NA-FK1 redux, Second Fan Upgrade Kit for NH-U12S redux Cooler - Image 1](https://m.media-amazon.com/images/I/81L6v6TLrpL.jpg)

## Questions & Answers

**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.**
A: 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)**
A: 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 ??**
A: yeah but you'll need the brackets that came with the 212

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not quite 20% cooler ;)
*by E***A on 9 January 2026*

2-3*C cooler. Worth the money, especially when you look at the price of the fan on it's own.

### ⭐⭐⭐⭐⭐ Quality made
*by J***C on 21 May 2025*

Nice addition to my build

### ⭐⭐⭐⭐⭐ Worthwhile Accessory
*by K***N on 16 May 2021*

I picked this up to add to my NH-U12S Redux air cooler. It will only drop temperatures a few degrees more, but I had room for it in my case so wanted to add it. As you would expect from Noctua, it arrives in a nice box and comes with a fan splitter cable, two low noise adapters and the metal grips to attach the fan to the cooler. The fan fits perfectly and isn't too loud either. Recommended.

## 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

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**Shop now:** [https://www.desertcart.com.cy/products/301389175-na-fk1-redux-second-fan-upgrade-kit-for-nh-u12s](https://www.desertcart.com.cy/products/301389175-na-fk1-redux-second-fan-upgrade-kit-for-nh-u12s)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-04*