








🚴♀️ Never Stop, Never Flat: The Ultimate Puncture-Proof Ride
The Stop-A-Flat Puncture Proof Bicycle Inner Tube is a durable, solid foam tube designed to eliminate flats for 12.5" tires sized 1.75 to 2.25 inches wide. Compatible with most US rims (excluding pre-1980 Raleigh and Schwinn), it offers a hassle-free, puncture-resistant solution ideal for cyclists seeking reliable, long-lasting performance across urban commutes and rugged terrains. Supported by expert sizing assistance and proven over 500 miles of use, it’s the economical choice for uninterrupted rides.



| ASIN | B014K5CTCM |
| Best Sellers Rank | #26,600 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #112 in Bike Tubes |
| Brand | Stop-A-Flat |
| Brand Name | Stop-A-Flat |
| Color | Yellow |
| Compatible Tire Width Maximum | 20 Millimeters |
| Compatible Tire Width Minimum | 20 Millimeters |
| Customer Reviews | 3.9 3.9 out of 5 stars (3,938) |
| Date First Available | August 28, 2015 |
| Global Trade Identification Number | 00664332865142 |
| Included Components | Puncture Proof Tube |
| Item Diameter | 12.5 Inches |
| Item Dimensions LxWxH | 12 x 2.25 x 2.25 inches |
| Item Package Dimensions L x W x H | 14.5 x 5 x 1.5 inches |
| Item Weight | 0.18 Kilograms |
| Item Width | 1.75 Inches |
| Manufacturer | Cycle Force Group |
| Material | Puncture Proof Foam |
| Model Name | Stop-A-Flat |
| Number of Items | 1 |
| Package Weight | 0.18 Kilograms |
| Part Number | 820000000 |
| Size | 12 1/2 x 1.75 / 2.25" |
| Sport Type | Cycling |
| Style | 12 1/2 X 1.75 / 2.25 |
| Suggested Users | unisex-adult |
| UPC | 664332865142 |
| Valve Length | 40 Millimeters |
| Valve Type | Schrader |
| Warranty Description | 90 Day Limited |
| Wheel Size | 12 Inches |
C**C
!!!NO MORE FLATS!!!
500+ mile review It is a bit of a challenge to get them on the rim. Highly recommend putting it in a Tupperware with soap and water will act as a lube and will make the process of putting it on much faster and less strenuous. Got the 26inch by 1.95 ones for my Jason electric e-bike. I regularly get a flat about once every other month decided to get this one for my front tire to try it out. Truly amazed in this product haven't had a flat or even hesitate to check the air and my tire before I leave. Since installing the puncture proof insert I have ran over nails glass etc and still nothing going strong over 500 miles and still like the first day I got them. Recommendation Make sure you're putting a tire over it that has really good grip because the insert makes your tire feel like it's running at about 80 PSI so if you don't have a good tires on a wet surface you won't get that much traction. Hope this review helps stay safe out there!
J**R
Game-Changer!
The Stop-A-Flat Puncture Proof Bicycle Inner Tube is a game-changer when it comes to eliminating the frustrations and inconveniences of flat tires. This innovative inner tube offers reliable puncture protection, allowing cyclists to enjoy a worry-free riding experience. One of the standout features of this product is its puncture-proof design. Unlike traditional inner tubes that are susceptible to punctures from sharp objects on the road, the Stop-A-Flat inner tube incorporates a unique solid construction that prevents flats. This means you can say goodbye to those unexpected stops to repair or replace a punctured tube, allowing you to focus on enjoying your ride to the fullest. The durability of the Stop-A-Flat inner tube is truly impressive. Its solid construction ensures that it can withstand various road conditions, including rough terrains, debris, and even thorns. This makes it an ideal choice for cyclists who frequently ride on challenging surfaces or in areas with high puncture risks. Installation of the Stop-A-Flat inner tube is straightforward and hassle-free. It can be easily fitted into most standard bicycle tires, providing a seamless replacement for traditional inner tubes. The tube's solid construction means there's no need to worry about inflating or maintaining air pressure, saving you time and effort. The performance of the Stop-A-Flat inner tube is exceptional. With this puncture-proof solution, you can confidently ride without the fear of unexpected flats. Whether you're commuting to work, exploring off-road trails, or participating in competitive cycling events, this inner tube ensures a smooth and uninterrupted ride. Furthermore, the Stop-A-Flat inner tube offers long-lasting performance. Its solid construction and high-quality materials contribute to its durability, allowing it to withstand prolonged use and mileage. This means you can rely on this inner tube for an extended period, reducing the need for frequent replacements and saving you money in the long run. Comfort is not compromised with the Stop-A-Flat inner tube. Its solid construction provides a stable and consistent ride, ensuring optimal traction and handling. You'll experience a smooth and comfortable ride, even on bumpy or uneven surfaces, enhancing your overall cycling experience. Another advantage of the Stop-A-Flat inner tube is its versatility. It is available in various sizes to accommodate different bicycle types and tire dimensions. Whether you ride a mountain bike, road bike, hybrid, or cruiser, there's a Stop-A-Flat inner tube that fits your specific needs. It's important to note that while the Stop-A-Flat inner tube offers excellent puncture protection, it's not invincible. In rare cases of extreme conditions or severe impacts, it may still be susceptible to damage. However, for everyday riding scenarios and most common puncture risks, this inner tube provides reliable and effective flat tire prevention. In conclusion, the Stop-A-Flat Puncture Proof Bicycle Inner Tube is a remarkable solution for cyclists seeking a hassle-free and worry-free riding experience. With its puncture-proof design, durability, easy installation, and versatile compatibility, this inner tube offers a reliable and long-lasting solution to flat tires. Say goodbye to the inconvenience of punctures and enjoy a smooth and uninterrupted ride with the Stop-A-Flat inner tube.
S**.
get a Bell instead
while providing relief from puncture this product does so at the cost of being a proper tire. comparing this product to the endurance of "Bell" brand never flat tire I can honestly say that the Bell product (on my other bike) is better in every regard. and has lasted thru the same abuse for 2+ years longer (see attached photos; tooks tire apart bell tube covered by 26x1.75, I had bee riding around with around 5 nails in the tire (i never even noticed they were in there till i took tire apart) <--again, this is Bell brand awesomeness im talkin bout ) When I first purchased this product, It did not fit the tire size advertised. I had to use a 26x 1.95 over "Stop-A-Flat"'s 26 x 2.125. Given the nature of these tires, they put an unusual amount of wear on any rim during installation, both Bell and Stop-a-Flat. however, these tires are supposed to be permanent solutions for as long as the tread on one's tire lasts. Since buying this product and needing to put a smaller than advertised tire over it to gain any function of it, It has now become unusable(4-5months). the shape of this product is not correct. it allows for the pinching of the sidewall in a way that both damages the tire and does not provide rim-tire traction. Say, preventing rear brakes from functioning effectively by allowing the tire to spin over the rim. After I go to use my bike after it has been parked all night, there is a bump while riding every revolution, as if resting on its kickstand cause the foam tire to form a flat spot. Often while riding and needing to bank a turn or really anything, the tire still feels like riding on a half flat tire. upon inspecting my 26 x 1.95 tire's sidewall, it has become damaged to where if were to keep using this product, one day while riding, this stop-a-flat would tear through and separate from the rim while banking or something. definitely not a confidence booster on the road. besides look in this picture how easily it pushes to the side. often when riding of the slightlyest uneven terrain my Stop-a-flat is floppin around on my tire. do not like. Save yourself the trouble and install a Bell no flat from the beginning Edit: Edit: upon removing the tire to switch back to air while I wait for my Bell in the mail, I took some pictures of what happened to this tube. keep in mind the 2.125 tire i bought to use over this was way too loose so I put a much tighter 1.95 over it instead. after 6 months of sub-satisfactory use this: (picture) is what happened to it. see for yourself. the only possibility of using this product would have been MAYBE to try putting a 1.75 tire over the 2.125 tube. from the beginning, mine is destroyed TLDR: bell is tough as nails. Stop-a-flat works by being already always flat (to be fair i never tried to fit a 26x1.75 tire over the stop-a-flat. how i got it over the bell tire.... idfk)
Trustpilot
2 weeks ago
2 months ago