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The Different Types of Hoses: A Complete Guide

Guide des Tailles de Durites | Rasl'Bitume

Hose Size

1/4 or 3/8, 6mm or 8mm? Discover the complete guide to make the best choice according to your needs

Why Size Matters?

When choosing hoses for your suspension system, size is a crucial factor. Opting for 1/4" (about 6 mm) or 3/8" (about 10 mm) hoses may seem trivial, but each choice has its pros and cons.

🇺🇸

1/4" hoses

US Standard (6.35mm)

✓ Advantages

  • Simple and quick installation
  • Easy handling
  • Ideal for tight spaces
  • American standard (Airlift)

✗ Disadvantages

  • Less responsive
  • Slower height changes
🇪🇺

6mm hoses

European Standard

✓ Advantages

  • Simple and quick installation
  • Easy handling
  • Ideal for tight spaces
  • Standard for European kits

✗ Disadvantages

  • Less responsive than wider hoses

3/8" hoses

Premium US Version (9.52mm)

✓ Advantages

  • Superior responsiveness
  • Facilitated frequent adjustments
  • Optimal performance
  • Common with Airlift and US brands

✗ Disadvantages

  • Bulkier installation
  • Requires more space

Technical Comparison

1/4"

US Standard

Common with Airlift and American brands. Diameter of 6.35mm. Perfect for classic installations with US equipment.

Diameter
6.35mm
Responsiveness
★★★☆☆
6mm

European Standard

Used in most European kits. Diameter of 6mm. Standard for classic European installations.

Diameter
6mm
Responsiveness
★★★☆☆
8mm

Airmext Kit

Intermediate position between 1/4" and 3/8". Mainly found in Airmext kits. Good performance/ease balance.

Diameter
8mm
Responsiveness
★★★★☆
3/8"

Premium US Version

Common with Airlift and US brands. Diameter of 9.52mm. Maximum performance for demanding users.

Diameter
9.52mm
Responsiveness
★★★★★
10mm

Hard-Line

Standard for Hard-Line installations. Diameter of 10mm. Professional and permanent installations.

Diameter
10mm
Use
Hard-Line

Equivalence Table

Size Exact diameter Main Use
1/8" 3.17 mm Specific applications
1/4" 6.35 mm US / Airlift Standard
6mm 6 mm European Standard
8mm 8 mm Airmext / Intermediate Kit
3/8" 9.52 mm Premium US Version
10mm 10 mm Standard Hard-Line
15mm 15 mm Hard-Line (rare)
1/2" 12.7 mm Industrial applications

Hard-Line Installation

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Tips for Hard-Line

Most Hard-Line hoses are 10mm, some rarer ones are 15mm.

  • We recommend using olive fittings for better sealing
  • Professional and durable installation
  • Better vibration resistance
  • Clean and sleek aesthetics

Which Size to Choose?

Beginner

Simple / Low Cost

1/4" or 6mm

✓ Easy installation
✓ Affordable budget
✓ Tight spaces
✓ Occasional use

Intermediate

Good Balance

8mm

✓ Good performance/price balance
✓ Better responsiveness
✓ Airmext Kit
✓ Regular use

Expert

Premium

3/8" or 10mm

✓ Maximum performance
✓ Frequent adjustments
✓ Hard-Line (10mm)
✓ Heavy use

Ready to Equip Your Setup?

Discover our complete range of hoses and lines for your air ride system

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