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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Dec 3
Recently Viewed
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
Features
- PREMIUM INNER TUBES - Preferred by champions and riders worldwide
- VULCANIZED TUBES- All Continental Tubes are seamless and mold cured to ensure uniform roundness and better reliability at the valve stem.
- QUALITY TESTED- Every Continental Tube passes a stringent 100% quality control inspection.
- UNITUBE- Continentals Unitube system allows greater compatibility with more tire sizes and less tubes.
- REMOVABLE VALVE CORES - Useful for adding extenders or using Revo Sealant.
Item Package Dimensions L x W x H: 5.08 x 3.27 x 1.73 inches
Package Weight: 0.16 Kilograms
Item Dimensions LxWxH: 1.97 x 1.18 x 0.69 inches
Item Weight: 4.94 Ounces
Brand Name: Continental
Model Name: 181921
Color: Black
Material: Rubber
Suggested Users: unisex
Number of Items: 1
Manufacturer: Continental
Part Number: TUC81921
Model Year: 2016
Style: Inner Tube
Included Components: no
Size: 700 x 25-32 - 42mm Presta Valve
Sport Type: biking
Date First Available: November 17, 2009
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Dec 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
It’s been hard trying to find these in the stores so I bought some on here. I was a little skeptical with some of the bad reviews…. Here’s what happened. After I installed the new tube, got it all aired up and then took my dog for her bike/run. Great, the first day, all seemed well. The next night, I went to go for another ride and the tube/tire was flat! I decided just to air it up again and make sure I tightened the valve when done. It has now lasted weeks so far without having to air it up again. Check those valves after you install/air them up! I believe that was my problem.
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Reviewed in the United States 🇺🇸 on October 2, 2022 by LaVonne K Eggen
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
The tubes are good but, I bought these too quickly without measuring my previous valve stem. These are too short, I really need 50mm or longer. The short valve makes it hard to connect the pump.
Reviewed in the United States 🇺🇸 on October 4, 2022 by Ryan M
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
Good quality
Reviewed in the United States 🇺🇸 on October 25, 2022 by SeriousBusiness
Style: Presta Valve
Size: 650 x 18-25 - 42mm Presta Valve
The Continental tubes like their tiers are really best quality especially in hot environments, they really work great.
Reviewed in the United States 🇺🇸 on November 19, 2022 by Ariel Petraro
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
These are great tubes. It looks like the negative reviews are user errors. Because if you look at the pictures the blow outs look like they didn’t have the tubes inside the tire when pumping up which would cause a long blowout because the bead would be pressing on that section. I think these people could have just as likely messed up any brand of tube. Continental is well know and trusted and used by a lot of experienced cyclists for a reason b
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Reviewed in the United States 🇺🇸 on May 7, 2022 by David Gambill
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
I closed my bike shop 4 years ago...I've changed thousands of tubes over the last 30 years. Contenental Tubes are very high quality. They are thick enough and the rubber high quality enough to stretch from 700c x 25mm all the way to 700c x 32mm. I worry on other brands as they get pretty darn thin at 32mm @105psi. You might pay a little more for Continental brand but very little...but the quality is much higher...they will last much longer with much less trouble over the life of the tire. Selecting from all the different Amazon selections...brands/prices/sizes etc...I know these Continental's are the best deal overall and are very much worth a little extra if you dont want any problems down the road. I patch my tubes and there is no problem with a good patch...but I hesitate patching on cheap tubes. You get a feel for this after changing so many flats. The way a tire/tube go together (ease) really depends on a lot...but think about it...it all starts with the tube. TOP QUALITY.
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Reviewed in the United States 🇺🇸 on July 26, 2021 by brian backus
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
if you are using schrader valve to presta valve adapter, be aware that while unscrewing the adapter after inflating the tube, you also can unscrew the presta valve and thus deflate the tube. To avoid this, unscrew just enough adapter to let loose of the thread and then pull it out.
Reviewed in the United States 🇺🇸 on April 10, 2022 by Charles79
Style: Inner Tube
Size: 700 x 25-32 - 42mm Presta Valve
My rating of this product reflects my opinion of these tubes when purchased in new condition. Although the rating is positive, this review is meant as a warning to others that you might, or might not, get a great deal buying from Amazon Warehouse. So far, I've bought 4 of these tubes from Amazon Warehouse. The price is GREAT. I paid around two dollars each. I bought two each of "Condition: Used - Like New" and "Condition: Used - Very Good". The latter were described in detail as, "Minor cosmetic imperfections on the corner of the item. Item will come in original packaging. Packaging will be damaged." The "Condition: Used - Like New" were both exactly that: They looked and performed like new. No, I don't pinch my tubes when installing them. But somebody shopping on (and returning to) Amazon does. The two "Condition: Used - Very Good" tubes were both popped in the same place, where the N00Bs so often pop their tubes. Obviously, Amazon Warehouse doesn't attempt to inflate returned tubes. And the visual inspection skills at Amazon Warehouse aren't perfect. One of the holes made when N00B pinched his (Yes, I am certain. Any lady would have followed instructions.) tube was so large it created a flap of butyl.
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Reviewed in the United States 🇺🇸 on May 30, 2020 by mechanically inclined