Chaoyang Inner Tube 20 x 4.0/4.9 for Engwe X20 Electric Bicycle

Chaoyang Inner Tube 20 x 4.0/4.9 for Engwe X20 Electric Bicycle

This Chaoyang inner tube is specifically designed for electric bicycles, offering a suitable replacement for the Engwe X20 model. It is compatible with tyres marked 20 x 4.0 or 20 x 4.9.

Product Overview

The inner tube is a critical component for pneumatic tyres, holding the air pressure that supports the bicycle and provides cushioning. This Chaoyang inner tube is made from a durable rubber material, intended for reliable, long-lasting use in your Engwe X20 electric bicycle.

Key Features and Compatibility

• Exact Fit: Designed for Engwe X20 electric bicycles.
• Tyre Size: Compatible with 20-inch tyres with widths ranging from 4.0 to 4.9 inches. Always check the sidewall marking of your existing tyre for the precise dimensions (e.g., "20 x 4.0" or "20 x 4.9").
• Valve Type: Features a Schrader valve (also known as an American valve), which is common on electric bicycles and allows for easy inflation with standard pumps. The valve length is approximately 32mm.
• Dimensions: The inner tube has an approximate outer diameter of 550mm and an inner diameter of 400mm when uninflated. Its width is approximately 60mm.
• Weight: The net weight of the inner tube is approximately 0.38 kg.

Installation and Safety Guidance

Correct installation is crucial for the performance and longevity of your inner tube and tyre. We recommend professional installation if you are unfamiliar with the process.

• Check Tyre and Rim: Before installing, thoroughly inspect the inside of your tyre for any sharp objects, punctures, or damage. Ensure the rim tape is intact and covers all spoke holes to prevent punctures.
• Valve Hole Alignment: Make sure the valve stem aligns correctly with the valve hole in the rim.
• Avoid Pinch Flats: When seating the tyre bead, ensure no part of the inner tube is pinched between the tyre and the rim. Inflate slowly and check that the tyre bead is evenly seated around the entire rim on both sides.
• Inflation: Inflate the inner tube to the pressure recommended on your tyre's sidewall. Do not overinflate.
• Post-Installation Check: After installation and initial inflation, visually inspect the tyre and rim for proper seating and any bulges.

Ordering Information

This inner tube is a direct replacement part. Please verify the tyre dimensions on your Engwe X20 electric bicycle to ensure compatibility before ordering. EU delivery is typically within 3-7 working days.