Inner tube Wanda 20 × 4.1/4 with straight valve

Wide Wanda inner tube for 20-inch tire

The Wanda inner tube marked 20 × 4.1/4 has a straight valve and is intended for a corresponding wide tire. It fills the inside of the tire with air and replaces a punctured or damaged inner tube.

Features and fitment

• Inner tube with straight valve, no outer profile; nominal marking 20 × 4.1/4.

Approximate dimensions

• Outer diameter of inner tube: 520 mm.
• Inner diameter of inner tube: 400 mm.
• Width of inner tube: 50 mm.
• Length of straight valve: 32 mm.

The straight valve measures approximately 32 mm. Compare the marking on the existing inner tube and tire, as well as the height of the rim. This is an inner tube; the outer tire and rim are separate parts.

Replacement without pinching the inner tube

• Before replacement, find the cause of the puncture in the tire or on the rim. A foreign object, sharp edge, or damaged rim tape can immediately damage the new inner tube as well.
• Inflate the inner tube slightly, align the valve with the hole, and distribute it evenly in the tire. When installing the bead, do not pinch it with mounting tools.
• Inflate to the pressure allowed for the wheel assembly. Check the position of the valve and sealing; do not use the valve cap to stop leaks.