20 inches air tube

20-inch inner tube: essential equipment for compact bike wheels

The 20-inch inner tube is a must-have component for bikes with smaller wheels. Whether you're riding a folding bike, a BMX, or a children's bicycle, choosing the right inner tube is key to ensuring comfort, performance, and safety. Let’s take a closer look at the features and specificities of this compact but essential part.

Why choose a 20-inch inner tube ?

The 20-inch size corresponds to the diameter of the wheel it fits. This type of inner tube is commonly used on:

• Kids’ bikes (typically for ages 5 to 9)

• Folding urban bicycles

• BMX bikes (freestyle or race)

• Some cargo bikes or recumbent bikes

Its smaller size makes it lightweight, easy to install, and ideal for short trips or specialized riding styles. Despite its compact format, it needs to offer excellent air retention, puncture resistance, and perfect compatibility with the tire and rim.

20-Inch presta inner tube: precision inflation

The 20-inch Presta inner tube features a Presta valve, also known as a French valve. Thinner than the Schrader valve, it's favored for its lightness and precise inflation control. It's especially suited for narrow rims and allows fine-tuned pressure adjustments, which is crucial for performance-oriented activities like BMX or mini road bikes.

Advantages of the Presta valve include:

• Better pressure retention

• Lighter weight

• A locking nut for secure closure

Note: Presta valves require a compatible pump or an adapter, but they provide excellent long-term reliability.

Technical features to look for

Here’s what to check when buying your 20-inch inner tube:

• Exact dimensions: 20 inches in diameter, but pay attention to the width (e.g., 20 x 1.75 to 20 x 2.125)

• Valve type: presta or Schrader depending on your rim

• Material: Butyl (most common), known for durability and ease of repair, or latex for lightweight performance

• Weight: choose depending on use (freestyle, racing, city commuting)

• Tire/rim compatibility: refer to the ETRTO number to avoid sizing issues

Maintaining your inner tube

To extend the life of your 20-inch inner tube, follow these simple tips:

• Check your tire pressure regularly with a gauge

• Inspect the wheel and tire for debris or sharp objects

• Use rim tape to protect the inner tube from spoke holes or sharp edges

• Store spare tubes away from moisture and sunlight

In summary

The 20-inch inner tube is a crucial part for city riders, young cyclists, and BMX enthusiasts alike. In its Presta version, it adds precision and lightness. Choose a high-quality model that matches your wheel for worry-free riding.