---
product_id: 14074509
title: "PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black"
brand: "primochill"
price: "$115.69"
currency: USD
in_stock: true
category: "Primo Chill"
url: https://www.desertcart.us/products/14074509-primochill-primoflex-lrt-custom-watercooling-flexible-tubing-3-8in-id
store_origin: US
region: United States of America
---

# 3/8in ID x 1/2in OD precision fit Onyx Black sleek, logo-free design Proudly made in the USA PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black

**Brand:** primochill
**Price:** $115.69
**Availability:** ✅ In Stock

## Summary

> 🖤 Cool your rig, not your style — PrimoFlex LRT means flawless flow with zero fuss.

## Quick Answers

- **What is this?** PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black by primochill
- **How much does it cost?** $115.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/14074509-primochill-primoflex-lrt-custom-watercooling-flexible-tubing-3-8in-id)

## Best For

- primochill enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Enthusiasts:** Top-rated with 4.7 stars from 400+ reviews, a proven choice for millennial pros who demand quality and style.
- • **Durable & Kink-Resistant:** Crafted from premium glass-like PETG material, delivering flexibility without leaks or deformation under pressure.
- • **Complete Cooling Solution:** Includes FREE Liquid Utopia coolant and SysPrep pre-treatment for optimized loop performance right out of the box.
- • **Sleek & Discreet Aesthetic:** Logo-free Onyx Black tubing offers a minimalist, professional look that elevates any custom build.
- • **Precision Fit, Zero Compromise:** Engineered 3/8in inner and 1/2in outer diameter tubing ensures seamless compatibility with premium watercooling fittings.

## Overview

PrimoChill PrimoFlex LRT tubing is a 10-foot, 3/8in ID x 1/2in OD flexible watercooling tube in Onyx Black, made from premium glass-like PETG material in the USA. It comes bundled with Liquid Utopia coolant and SysPrep loop pre-treatment, offering a sleek, logo-free design that’s easy to install, kink-resistant, and highly rated by enthusiasts for leak-free, professional-grade custom cooling setups.

## Description

Buy PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black: Water Cooling Systems - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Logo Free (no print on tube)
- Inner Diameter: 3/8 inch / Outer Diameter: 1/2 inch
- Includes FREE Liquid Utopia and SysPrep–Cooling Loop Pre-Treatment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A9ZDK44 |
| Best Sellers Rank | #232 in Water Cooling Systems |
| Brand Name | PrimoChill |
| Color | Onyx Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (404) |
| Included Components | Item |
| Item Dimensions L x W | 120"L x 0.5"W |
| Item Length | 120 inches |
| Item Weight | 13.76 ounces |
| Manufacturer | PrimoChill |
| Material Type | Glass |
| Nominal Wall Thickness | 0.0625 inches |
| Outside Diameter | 0.5 inches |
| UPC | 897337025390 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** PrimoChill
- **Color:** Onyx Black
- **Item Length:** 120 inches
- **Item Weight:** 13.76 ounces
- **Manufacturer:** PrimoChill
- **Material:** Glass
- **Nominal Wall Thickness:** 0.0625 inches
- **Outside Diameter:** 0.5 inches
- **Product Dimensions:** 120"L x 0.5"W
- **UPC:** 897337025390

## Images

![PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black - Image 1](https://m.media-amazon.com/images/I/513BbXt65uL.jpg)
![PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black - Image 2](https://m.media-amazon.com/images/I/31EhvXRdelL.jpg)
![PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black - Image 3](https://m.media-amazon.com/images/I/311TKBquGcL.jpg)
![PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black - Image 4](https://m.media-amazon.com/images/I/41v6gOQYKsL.jpg)
![PrimoChill PrimoFlex LRT Custom Watercooling Flexible Tubing -3/8in.ID x 1/2in.OD, 10 feet Bundled with System Prep and Coolant, Made with Premium Materials, Proudly Made in the USA - Onyx Black - Image 5](https://m.media-amazon.com/images/I/41VaZp2jrEL.jpg)

## Available Options

This product comes in different **Color** options.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-19*