Prices shown in currencies other than USA Dollars are estimates based on current exchange rates. We will charge your credit card in USA Dollars on the day your order is shipped, and the conversion to your local currency will be done at the prevailing rate by your credit card issuer.
Shipments outside the USA are declared as “bike parts” for customs purposes and will include the actual amount paid for merchandise and shipping. Jenson USA will not mark your parcel as a “gift”, declare a value lower than the actual price paid, or otherwise prepare false customs information.
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Continental’s lightweight Supersonic Presta Tubes are an easy way to drop weight on your bike. Dropping rotating weight also has the advantage of improving acceleration. The Continental Supersonic Presta tube is offered in different valve length options and according to our Jenson USA scale weighs in at 55 grams. That 55 grams is for the 60mm valve and includes the nut and valve cover.
Reviewed by 1 customer
Displaying review 1
Comments about Continental 700C Supersonic Presta Tube:
Installed Front and rear. Pumped up to full pressure and let them rest overnight. Stopped after riding 10 miles. One half hour later went to get back on bike and rear tire was flat. Replaced with 70 g tube I have used for years without problems.
When I got home checked this tube and found a very slow leak at the area of the transition from the stem to the main part of the tube. So far the front is okay. There was some twisting around the valve stem when I installed which I straightened out but it appears these are so delicate that any kind of stress can cause a leak.
Checked reviews on other sites and my experience is not unique. Unless you are very careful or incredibly lucky these tubes are a bad idea. The risk is not worth the 20 g savings.
Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.
Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items