Bykski Full Armor Pump System featuring a High Flow CP-D5PB-V2 Pump, 720L/H Flow Rate, and PWM Control (B-UL-D5-X-V4)

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B-UL-D5-X-V4 In stock in Boise, ID

$139.99USDFree shipping, lower 48

US import duties and tariffs are included in every price.

Ships the same business day on orders placed before 2:00 PM MST. Overnight delivery available at checkout.

Ships directly from our Idaho inventory. You avoid overseas sellers, processing delays, international shipping, customs hold-ups and additional fees.

Building your first loop? Plan the rest of it

Why buy it here

US warranty, handled in Boise

Claims are settled here, by the people who sold it to you.

Exclusive US distributor

The official US source for Bykski, so every part is genuine.

About this part

The Bykski Armor pump with PWM has all you need to power your loop. The strong CP-D5PB-V2 pump has no problems with bigger cases and multiple components. Compact in a complete ready-to-use package. The speed of the pump can be controlled via the 4-pin PWM power cable by connecting to motherboard header or compatible PWM controller.

Features

Industry Standard G1/4 Thread
Strong CP-D5PB-V2 Pump Core
Durable POM Pump Head with 60mm threading

Specifications

Thread: G1/4
Material: POM TOP / Aluminum Motor cover (NOT in contact with coolant)
RPM: 1800-4800RPM
Power: DC 8-20v, 2.0A
Flow Rate: 5m 720L/h
Connector: 4-Pin Molex and PWM+ data feedback

Compatibility

Fitting: G1/4 Thread
Reservoir: Optional 60mm Threaded

Included Parts

1x CP-D5PB-V2 Pump
1x Aluminum Pump Housing
1x POM Top thread for 60mm reservoir
Assembly Hardware + O-Ring

Warning: This product is designed for self-installation. The manufacturer is not liable for any damages resulting from misuse, including, but not limited to, improper installation or the use of incompatible hardware or fluids. By using this product, you accept all related risks.

Pump Specific Warnings:

Use of caustic and/or abrasive coolant will void your warranty (see warranty section) and may cause your pump to fail. This pump comes stock without any housing, allowing you to integrate any of your favorite pump tops and accessories. Consequently, the pump cannot be used as a standalone unit. Do not run the pump dry.

The D5 and DDC range of pumps are designed to be self-lubricating, meaning the fluid that the pump is designed to move is also used to lubricate its internal parts. Therefore, you should not run the pumps without fluid for any reason. Running these pumps dry creates internal friction between the ceramic bearing and bearing housing, and that heat can quickly crack or melt the bearing housing.

Running D5 pumps dry (without fluid) immediately voids the warranty. Replacements will not be provided under these conditions.

It is easy for us to determine if your pump has been "run dry" or without fluid:

Visual scratches along the inside of the housing. These are created when the bearing housing melts and the impeller spins off-center.
The bearing housing has stress cracks or is melted, resulting from heat created when the pump is run dry.
The impeller sits too low in the housing, usually indicating that the ceramic bearing is falling through the normal housing location.

Datasheet

TypeD5 Pumps

Shipping weight3.0 lb

SKUB-UL-D5-X-V4

What buyers said

Left by people who bought this part here. Compatibility reports are the useful ones — if you fitted it, say which board.

Before you install it

This is a component, not an assembly — how it goes in depends on the loop it is joining. What does not change is the last step: leak test before power. Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.

Custom water cooling is installed by you, at your own risk. We are not responsible for leaks, or for damage to your parts or system. If you're unsure at any step, ask before you power the loop.

Questions people ask about this part

Answers specific to B-UL-D5-X-V4. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.

What does this part fit?

Compatibility for this part is listed in the compatibility notes on this page. Bykski machine to a specific hardware layout, so send us your exact model and we will confirm it against part number B-UL-D5-X-V4 before you order.

Is it in stock, and when will it ship?

Yes — in stock in Boise, Idaho. Orders placed before 2:00 PM MST on a business day ship the same day — we do not ship weekends or US holidays. Overnight delivery is available at checkout.

Can I return it if it turns out not to fit?

Yes. Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used. So we would rather check the fit with you first: send us the model and we will check it against this part.

Will I pay import duties or customs charges on delivery?

Not on a US order. US import duties and tariffs are already included in the price, so nothing is collected at the door and there is no brokerage fee. Orders shipped outside the US may owe that country's customs fees and duties.

Who handles the warranty?

BYKSKI.US, the exclusive US distributor, from Boise, Idaho. Claims are handled domestically rather than returned to an overseas factory. Installation is at your own risk: we are not responsible for leaks or damage to other hardware.

Is shipping free?

Yes — shipping is included at this price for addresses in the lower 48 US states.

Are printed instructions included?

No printed manual is included. Installation references are in the product gallery images, and the install guides on this site cover the process step by step.

Do I need anything else to use it?

Check the parts list above against what you already have. If you are building a loop from scratch, send us the full parts list and we will tell you what is missing before you order.

Ask us before you order

Send your exact hardware model and we'll confirm the right part before you spend $139.99 — or tell you honestly that this isn't the one.

Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.

Ask about compatibility