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header-product Radiator block Alphacool NexXxoS ST25
79.99 €

Radiator block Alphacool NexXxoS ST25

Radiator block Alphacool NexXxoS ST25 Photo 1
Radiator block Alphacool NexXxoS ST25 Photo 2
Radiator block Alphacool NexXxoS ST25 Photo 3
Radiator block Alphacool NexXxoS ST25 Photo 4
Radiator block Alphacool NexXxoS ST25 Photo 5
Radiator block Alphacool NexXxoS ST25 Photo 1
Radiator block Alphacool NexXxoS ST25 Photo 2
Radiator block Alphacool NexXxoS ST25 Photo 3
Radiator block Alphacool NexXxoS ST25 Photo 4
Radiator block Alphacool NexXxoS ST25 Photo 5
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Short description

The Alphacool NexXxoS ST25 Radiator block features a compact design with dimensions of 120mm width, 272mm depth, and 25.5mm height. Made from high-quality copper and steel, it ensures efficient liquid cooling. The black finish adds a sleek look to your setup. Ideal for custom cooling systems, it provides excellent heat dissipation and performance.
Available for order: 96 pcs.
Warranty: 2 Years
SKU: 3932645
Manufacturer: Alphacool
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
23.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
28.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.63 kg)
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
28.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
Bank transfer
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Product information

Description

The Alphacool NexXxoS ST25 Radiator block is a slim liquid-cooling radiator designed for compact PC builds and small form factor systems. With a flat profile and copper construction for end chambers, water channels and cooling fins, it provides efficient heat transfer and suits custom water-cooling loops where space is limited. The radiator measures approximately 120 mm × 272 mm × 25.5 mm and comes in a black finish.

Advantages

All major thermal components of the NexXxoS ST25—end tanks, water channels and fins—are made from pure copper, offering higher thermal conductivity than aluminium and improving heat dissipation. The radiator uses a 15 FPI fin spacing combined with small serrations on each fin to guide airflow, increase surface area and maintain cooling capacity with low airflow resistance. Its slim 25.5 mm profile makes it well suited to Mini-PC and small-form-factor installations where internal space is restricted.

Suitable for

  • Mini-ITX and other small form factor PC cases
  • Custom water-cooling loops in compact builds
  • Situations requiring a low-profile radiator with good cooling performance

Key specifications

  • Product type: Radiator block
  • Model: Alphacool NexXxoS ST25
  • Dimensions (approx.): 120 mm × 272 mm × 25.5 mm
  • Material: Copper (end chambers, water channels, fins), steel components
  • Colour: Black
  • Fin density: 15 FPI
  • MPN: 14353
  • EAN: 4250197142502

How to use

Install the NexXxoS ST25 into your PC case where a 120 mm fan/radiator mounting location is available, ensuring sufficient airflow through the fins. Connect the radiator to your custom water-cooling loop using appropriate fittings and tubing compatible with the radiator ports. Secure the radiator with case screws or mounting brackets, mount fans if required for active airflow, and fill and bleed the loop according to your cooling system’s instructions before powering the system.

Usage recommendations

Use corrosion-inhibiting coolant compatible with copper and follow standard loop-filling and leak-test procedures. For optimal performance in compact builds, pair the ST25 with low-profile or high-static-pressure 120 mm fans and ensure adequate case ventilation.

Specifications

Type:
Radiator block
Product colour:
Black
All features
Number of connectors:
2
Connecting thread:
1/4

Performance

Type:
Radiator block

Design

Product colour:
Black
Material:
Cooper, Steel
Certification:
CE, FC, RoHS

Weight & dimensions

Package weight:
676 g
Height:
25.5 mm
Width:
120 mm
Depth:
272 mm
Package depth:
340 mm
Package height:
40 mm
Package width:
140 mm

Other features

Cooling agent:
liquid

Description

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Customer reviews

Customer questions

FAQ

How much does the Radiator block Alphacool NexXxoS ST25 cost, and is it available for purchase?

The price is 79.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 96 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Alphacool products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Alphacool service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.