This high - quality fat tyre tube is a perfect fit for all bikes running 20 x 4.0'' fat tyres. It offers excellent performance and reliability. Features include: one tube in the package, size of 20 x 4.0'', and it suits all 20 by 4 - inch fat bikes.

Using your 20 x 4.0'' fat tyre bicycle tube is easy. First, remove the old tube from your bike's tyre. Make sure the inside of the tyre is clean and free of any sharp objects that could puncture the new tube. Then, carefully insert the new tube into the tyre, being careful not to pinch it. Attach the valve to the rim and inflate the tube to the recommended pressure, which you can usually find on the side of the tyre. When it comes to maintenance, regularly check the tube for any signs of wear or damage. If you notice a small puncture, you can use a patch kit to fix it. Also, keep the tube away from extreme temperatures and sharp objects to extend its lifespan.