✅【20"X4.0-4.5 Bicycle Tube】: Suitable for 20X4.0/4.2/4.25/4.5 bicycles, American style valve 32mm. 20 4.0 The tube air intake has the same specifications as motorcycles and cars, so it was easy to fill with air. Easy to use, no insect rubber required. Suitable for fat bikes, electric bicycles, and snowmobiles. Please check the tire size before purchasing.The tire size is usually displayed on the side of the outside tire.
✅【Does not take up much space and is convenient to carry】: Bicycle Tube 20 4.0 has a small volume when folded, so you can carry it with you when you go out and ride long distances, avoiding the awkward feeling of not being able to ride after the tube gets punctured. can.
✅ [New release thickness design]: To meet the needs of customers who often ride bicycles on a daily basis, and to further increase the durability of the tube, the tube is approximately 25% thicker than the regular version and is visible to the naked eye. We have developed a thick reinforced tube that feels thick. The tube's explosion resistance and puncture prevention performance have been improved.
✅【High Quality Butyl Rubber】: This material tire tube 20 4.0 can provide better airtightness and can maintain air for a long time, so you don't need to hit the air all the time.
✅【Budget Savings】: Doing it yourself will save your budget than going to the local store to replace your tires. As a spare bicycle tube, you can avoid the awkward feeling of not being able to ride after the tube bursts.
✅【Correct installation method】: First, push the tube into the rim to let a small amount (20%) of air into the tube. Next, install the tire, make sure the edges of the tire and rim are aligned and the tube is not pinched, and then re-inflate the tube to the correct air pressure. (If the tube and tire are not inflated together, i.e. if only the tube is inflated, or if the tube is pinched between the tire and the edge of the rim, air leaks and punctures may occur. Please note that it may become easier.)
Suitable for 20 inch wheels. Tire width is 4.0~4.5 inches. (Tires common to the 20X4.0-20X4.5 section)
The product is 2 bicycle tubes.
About shipping: The shipment is timely, the package is stored in the Amazon warehouse, and once we receive your order, Amazon will ship your item in a timely manner.
Warm tips for installing tires and tubes:
1. Tire rolling direction is the tire mounting direction (some tires are marked with an arrow, the direction of the arrow is the tire rolling direction). Clean the inside and outside of the tire to prevent the presence of foreign substances such as gravel and impurities, and install the tire according to its rolling direction.
2. After installation, inspect whether the bead (tire edge) is uniformly symmetrical, the bead must be outside the bead in all places and parallel to the bead in all places. Otherwise, there will be blurring when driving.
3. Insert the tube evenly into the tire with a small amount of air filling (less than 10%), stack the carcass in order and do not fold it inside the tire (folding and inflating it is easy to puncture), the tube and tire together over the steel ring, and inspect whether the lower tire is completely packed into the tire, and there should be no small step between the tire and the steel ring. You can then start aerating the tube. Installation is complete.
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