Introducing the DIRELL 28′ x 1-3/8′ bike inner tube, specifically designed for a range of 700c tires, including 35mm to 43mm widths. This versatile tube is perfect for various bike types, ensuring compatibility with sizes such as 40-622, 700x38c, and 700x40c. Engineered with high-quality butyl rubber, these inner tubes provide exceptional air tightness and heat resistance, making them a reliable choice for both casual and avid cyclists.

Installation of the DIRELL bike inner tube is straightforward and user-friendly. To replace an old tube, simply follow the inflation guide when dealing with a completely flat tire. This process saves you time and effort, allowing you to get back on the road quickly. For optimal results, ensure that the inner tube matches the tire size correctly. Inflate a little air into the tube before installation to prevent any cracks or damage during the process.

It is crucial to position the valve correctly at a 90° angle to the steel rim, and ensure that the nut is securely locked in place. After installation, always check that the tube is properly positioned between the steel rim and the tire, ensuring that it is not pinched or clamped by either component. Finally, inflate the tire according to the manufacturer’s recommended pressure standards.

The butyl rubber material of the DIRELL inner tube offers a comfortable riding experience, absorbing impacts from uneven road surfaces. This feature enhances your ride’s safety and comfort, making long journeys much more enjoyable. Whether you are commuting through the city or enjoying a leisurely ride in the countryside, the DIRELL bike inner tube is an essential component for any cyclist looking for reliability and performance.

Choose DIRELL for your biking needs and experience the difference that high-quality materials and thoughtful design can make. Upgrade your ride today with our durable and easy-to-install bike inner tubes, and enjoy a smoother, safer cycling experience!