Inner tubes are not exciting pieces of bike equipment, but they are essential! Their cost adds up quickly when buying them full pop at the shop, so don't worry - we've got your back with great tubes at the right price. Save time and money with Duro tubes! These Duro inner tubes come in two widths (20-25c & 35-43c) and in 3 different valve lengths, 33mm, 48mm, and 60mm. No matter the length of the valve, the great low price remains the same. The 20-25c width is quite accomodating. These inner tubes can be used to tire widths between 18c and 25c. The larger 35-43c tubes are even more accomodating, and can be used in almost any cyclocross or larger road tire. That's a huge range! One thing we have discovered is that there are only a few bicycle inner tube manufacturers. Many, if not all inner tubes come from a small handful of suppliers in Asia. This essentially means that no matter the tube brand, we're all riding the same tubes. This is great for you because you'll be getting a high quality tube at a greatly reduced price. Nearly nowhere else can you buy an inner tube for such a low price! Duro Inner Tubes are super inexpensive and super versatile. Varying valve length and a wide width range enable these 700c road inner tubes to be used in many applications. Whether it's Road, Track or Fixed Gear, these tubes will work! Don't get caught without a spare.
Wide Width Range 20-25c, and 35-43c
2 Different Valve Lengths 48mm, 60mm (for deep dish wheels) and 33mm for 35-43c
Threaded Valves with nuts to help to keep valve in place
Weight: 91grams (60mm) +/-15grams
Valve Cores are not removable
Choosing the Correct Tube
Choosing the correct tubes for your tires is crucial to the proper performance of your bicycle. If you need help, please call or chat with our Gear Advisors for assistance.
Step 1: Find the wheel size, or diameter for your mountain bike. It is usually printed on the tire. (26", 27.5"/650b, or 29". If your tire says something else, such as 700 x 23c, you will need to look at our Road tube selection.
Step 2: Choose the correct width. If your tire says 29 x 2.25", your tire is 29 inches in diameter and 2.25 inches wide. You can then use a tube labeled 29 x 2.1-2.4". Tubes fit a range of tire widths. Make sure your width is within the tube's range. Do NOT use a tube size not labeled for use with your tire.
Step 3:Select a valve stem length that will clear your rim by at least a few centimeters to clear your pump head for easy inflation. Measure your rim depth with a ruler, then simply subtract the depth (vertical thickness) of your rim in millimeters from the valve length. It should be at least 20mm, preferably around 30mm. If it is below that measurement, it will not fit your rim. You will need to buy a tube with a longer valve stem.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Q & A
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