Made heavy duty from quality materials. They do it right by making dependable and durable inner tubes. Count on it! 2 inner tubes are in their own box. 700c x 35-40 Replacement inner tube for a hybrid, fitness, comfort bike or other bicycle with the same tire size.
👤Had I seen the cause of the first failure, I wouldn't have bought 6 of these tubes, including 2 replacements from Amazon. I gambled with the tubes because of the clear description of the size and valve type in the reviews. I don't use my bikes very often. I also put on a new tire. I had to add air at 3 miles a day after 8 weeks of use. I left my bike in the living room for six weeks and when I returned the tire was flat. I looked for punctures and found nothing. I ordered two more of the same tube and a patch kit hoping to find a small hole, but the next day I removed my tire and tube to check. The picture shows a tear around the valve stem, not the old tube, but a new tube and tire. If any of my other tubes fail, I will add another review and buy another brand. A better headline would have been "1 in 2 failed in 8 weeks" because one of my bikes is not used much.
👤The tubes I received had a different brand name in the box. There is a The tube was said to be Kenda. The tire exploded after it was inflated in stages to the recommended pressure. There is a If you stretch the tube, you can see the stress that forms around the pimples in the inner tube. Returned tubes were denied a replacement or a refund by the seller. I don't think these tubes are a good idea.
👤In May, I bought two of these. After I got a leak by my valve, I put the first one on. I ride my tires at 80 because of my size. I inflated it to 80 psi and then 20 seconds later it blew an 8 inch slit opposite the valve stem. There was nothing sharp in the tire. It sounds like a gun shot when 80 psi pops in a garage. It split double starting around the middle of the split. The second one blew up fine. After a 10 mile ride, held pressure. I will be buying a different brand from now on. It's too much for trash to be $6 a tube. I put a lot of miles on my previous tube. I will upgrade the rating if I get the same out of the one that is on now. For now. 1/6. Do not recommend.
Premium inner tube is a high-quality butyl rubber compound which results in fewer flats, longer lasting and durable. Quality was tested. A 24 hour inflation test is included in the 100% quality control inspection. 6 per pack If you are not completely satisfied with your purchase, VeloTubes will give you a full refund. Each 700C X 18/25 Grams is 120 Grams. 48mm Presta Valve is fixed.
👤Since one of my riding buddies shared it, I came across it. I have installed one in my saddle bag, but I also have another one in my bag. I inflated these before installing and didn't notice any problems as others reported. I was able to inflate my tire to 100psi and have been riding it for a month. I will report back if I see something new. Happy riding! There is a There is a new update on July 7, 2019. I used another tube from the set that I got, but this one didn't last a day and had a puncture. I only faced an issue with this one, out of the 3 that I used. I patched it up. We will see how that goes. There is a * If you find my review helpful, please click the 'Yes' in the review. I keep sharing more experiences with the community.
👤I have never had a failure with this pack of tubes. I was frustrated and left a negative review after 3 out of 6 of the tubes I received were found to be faulty. The seller went out of his way to send me a new set of tubes with a hand written apology and I have ordered around 10 or so 6 packs for use by myself. I didn't ask the seller to send me replacement tubes or even let him know they had failed, he took the initiative himself. I think that speaks volumes for this seller and have no problem with a positive review because I am confident that the buyer will get a great value and be treated fairly in the rare event of a defect. 5 stars It is forever.
👤I ride a road bike. I like the idea of a tube that is light. The Continental Race or Light tubes are very thin. They fail more often than standard tubes. There is a The generic tubes are not too heavy and are thick at 121.75g. They are inexpensive.
👤I have ordered these many times and had no issues. Make sure you get the right size for your application. When the tube is inside a tire, inflate fully. People getting punctures were some of the issues I saw. I don't understand how that's the sellers fault.
👤I should have listened to the reviews that said the tubes were bad. I realized after getting 3 flats that every single tube had a defect opposite the valve stem. When you pump these tubes up with no tire, this area is more restricted than with normal tubes, which probably has something to do with the leaks. There is a The nature of the defect makes it difficult to patch. Not a single tube held air for more than a day, so I am hoping for a refund. I was stranded 10 miles from home twice. Stay away from them.
The package includes a bike repair tool kit, a portable carry bag, and a metal RASP. Easy to collect, quick to take out, and easy to use the tool kit make it easy to put all items together. The Presta Valve is Threaded with anRemovable Core. If you have an old inner tube, please check the side of it for the correct valve size and length.
👤My bike is a light trail bike, but it gets ridden a lot. When the tires were worn through, I decided to replace them with new ones. For thousands more, that set of tubes lasted. There is a I put on a new rear tire and set up my CX indoors on a trainer, because my Kenda mild knobbies were loud on a trainer. When I removed the training tire a few weeks ago, I accidentally pinched the tube with the tire levers and poked a tiny hole. There is a I only needed one of the two packs of tubes, but I used my mountain bike in the meantime, even though they normally last me years at a time. Throw the Kenda back on after opening a tube, mount it to the rim. Set the bike to the side so that it can be ridden the next day. There is a The rear of my bike is flat. I will censor my next few words. I pulled the tire and tube off and checked my rim, rim tape, and tire for any issues. All is clear. If you want to try for a tube, grab tube #2, mount it, and head out to the trail. The tire is losing pressure 15 miles into the ride, and things are feeling a bit squishy. I was fortunate to find a trail side pump, but I didn't bring a mini or inflator. I pump it back up when I am on tubes. I took the bike out for 22 miles and put it in my car. It was un loaded the next morning and completely flat. 0/2. These are just junk tubes, I am perfectly willing to admit when I goof up and ruin a tube. Even if I had a third sitting on the shelf, I wouldn't use it at this point, as I would be worried about it failing and waiting for it to fail.
👤Why do you have to spend so much time making a product like this? A short presta valve. Thanks for wasting time. If you don't know anything about the cycling products industry, you should turn your factory into an animal rescue center.
👤I have a bike for both road and single track trail riding. It is very difficult to get tires to seal on the rim without tubes. Tubes are prone to pinch flats if not inflated with higher pressures on trails. The traction is reduced by the higher pressure. I can run lower pressures and avoid pinch flats with the help of the tubes and tubeless sealant.
Most 700c road bikes have between 20 to 25 wide tires, and the replacement Inner Tubes are for them. It adds comfort to your ride. You won't feel the bumps and hollows because your bike glides along, protecting you from the force. That is comfortable. This inner tube was designed to be explosion proof. It immediately creates a seal to prevent damage if it is punctured. It's safe in any weather condition. There is no tool installation. You will be back on the trail or track in less than 5 minutes with their tire levers. It's so easy to replace the inner tube. Made heavy duty from quality materials. They do it right by making dependable and durable inner tubes. Count on it!
👤These are garbage. I have walked more with these tubes than I have ridden. Hope 20Five rims were installed in some nice Vittoria Terreno tires. Have not been able to run this setup tubeless. Good luck with Continental, Sunlite or Schwalbe tubes. It's hard to find anything like that now that China isn't shipping it anymore. Within minutes of mounting, 2 of them blew. The third leaked on my commute home. It seemed to hold air overnight. It was a bad call. It died on my way to work. I changed the blown tube on the side of the road about 10 minutes after the fourth leaked. Garbage. No issues for 4 rides now, thanks to a few Continental tubes.
👤My first bunch of tubes went quickly as I needed to share with others. The valve on my bike goes bad when it separates from the tube. I tried a second set of tubes and thought it was a bad set, but it happened again. I would have a flat because the valve separated from the tube and the tubes would last about a month. I ride a Trek Madone with 700 x 25's Gator Skins. I usually fill my tires once a week. I have always been careful with the long stem valves of the Specialized floor pump. I don't like flats and these tubes aren't reliable enough for me.
👤I'm very impressed with the tubes. This is coming from a person that has a lot of bikes. I build bikes for customers, but most of my time is spent building bikes for mountain bikes, road bikes, street bikes, beach cruisers, delivery bikes, hybrid, customs, tandems and trikes. I need a lot of tubes and at a reasonable price, because every build comes out of my pocket. Yes, yeah. I found my tube. Thank you.
👤I had these tubes for less than two months. The first tube had a puncture close to the rubber seam. I didn't discover the gash on the second tube until I put it inside the tire and started pumping it. Lesson learned. I put the third tube in the tire. Let's see how long it lasts. Other tubes I had before lasted six months on average for me.
👤I had to replace an old tube on my Allez because the valve had separated from the tube. I picked a tube that was easy to install. No problems when it was aired up to 112. The tire is still holding air after a couple weeks. I think I'm doing well. I haven't tried the other tubes yet and it's hard to say how consistent the quality is. There is a The tubes arrived in a bubble mailer. Everything fell out of the porch when my daughter picked it up. It's concerning that a product like bike tubes can be easily damaged.
If you're unhappy with the items, they're happy to exchange them for something else. 700X38/35/ 43C is the wheel size. 33mm is the length of the American Vale. The package includes the bike inner tube and rim strip. The bicycle inner tubes are made of strong butyl rubber, so they will last longer than average. If you're unhappy with the items, they're happy to exchange them for something else.
👤One exploded on the seam after failing within days. The other blew apart on a ride. These are really time bombs.
👤The tire was installed on the bike. The tire boomed. The tire is already damaged. The tire boomed once around. The 2nd one was installed without pinching or twisting. Two tires are down. There is a point of sale.
👤There is a manufacturing problem with this produce. The valve stems can break easily. I thought it was during the install, but I noticed the second tube had some cracks on the bottom of the stem. I requested a replacement that had small cracks and tears. The rubber looks like a quality product. The manufacture process needs to be revised.
👤I received 2 tubes, but no rim strips. The package was delivered undamaged. There is a Strips are more valuable than tubes. I got ripped off. No reply from Crabtek. CrabTek won't get any more money from me.
👤I am sure any tube would install the same as the one that was easy to install. There is a The first tube failed after 3 weeks of easy riding. The second tube was used for a week. The rim and tire had no sharp objects that could have caused the failure.
👤The first inner tube failed at a seam after one day. The second inner tube had a slow lead. I ordered a replacement and hope to have better luck.
👤The tire will pop loudly if you over inflate or pinch the tube. The neighbors were scared in the middle of the night. That was my fault. The product is great.
👤The bike was left unused for two weeks after it was used one time with the new tire inner tube. I heard a loud hissing noise and noticed that the tire was deflated. I took care not to over-inflate the tire inner tube. It was a waste to disassemble and return. I'm sick of being sold junk on Amazon.
If you're unhappy with the items, they're happy to exchange them for something else. Standard tubes have a thinner bottom wall. Tubes are resistant to puncture and last longer.
👤I replace the rear tube on a new bike because the original one was light and cheap. I bought a second tube to replace the front tube because I was very pleased with the first one. I always put a little air in the tube to make sure there is no slow leak. The first tube was fine, but the second one has a weird twist. I don't think the second tube will hold up to expectations, but I'm not a tire expert. Once I put a few miles on it, I'll report back. The second tube only lasted a few months before it started leaking at a seam. I patched the tube, but it started leaking again after a few more months.
👤This tube is a monster if it is installed correctly. I pop tires all the time. This thing can handle the abuse of my riding style. The negative reviews were probably the work of people who installed the tube wrong or let it get twisted. If you hold the valve stem through the rim and pinch around the tire, the tube will fit inside the tire. If you are breaking valve stems, you should take your bike to someone who knows what they're doing.
👤That's a thick inner tube! I've never seen a bicycle tube as thick as a truck inner tube. Unless I run directly over a tack that is set just right, I can't imagine getting a flat. It's probably not a good idea to carry a tube in your seat bag as a spare unless you don't mind it being 3 times as heavy as a normal tube and 3 times as bulky.
👤I spent 7 years on these tubes without flats. The valve stem broke as I was riding down a trail.
👤After a few days, hole around valve on both. I like to have one as a backup. I put the first one on my rear wheel. It was flat just 2 days later. I removed it and saw that there was a large hole on the rubber that joined the valve to the inner tube, which looked like a weak spot. I put a thin coating of rubber sealant on the wheel's metal valve hole, then inflated it, because I thought it was a bad one, or the wheel cut it there, which has never happened to the 3 or 4 tubes on before. On the next day, there was a hole in the same place. There is a I went to a local store and bought a cheaper one, and it has been working well for weeks. It seems like a manufacturing defect, either with that batches or the whole line. Will not be buying again.
It was designed to reduce flats. 48mm Presta Valve, Threaded with a Core. If you have an old inner tube, please check the side of it for the correct valve size and length. Adding a little air to the tube is a must when changing your bicycle inner tube. This gives it form so it doesn't get twisted or bunch up. Once the new tube is installed and fully inflated, only add a few PSI to form the tube. You should be able to see an even bead of the tire on both sides. Re- inspect the tire bead to the rim after inflating to half the desired PSI. inflate to the recommended air pressure if the beading is all the way around on both sides. If the bead doesn't hook properly on the rim, the inner tube can slip out between the tire and rim and then explode.
👤Most of the negative reviews for these tubes are because the 60mm valve length is not threaded. The 32mm and 48mm stems are threaded, the 60mm is not. A standard weight tube is less expensive than most other brands. If you get lucky, your local bike shop will sell the Specialized brand tubes for $8. The Street Fit tubes are made by Sunlite, a good maker of inner tubes, and they cost me less than $6 per tube in the value pack. I think that's a good deal. I have no issues with mine and I will keep buying the cheaper tubes until I see a reason to switch.
👤The tubes blow in every instance. I have ridden less than 10 miles on three sets of tubes. The tubes blow close to the valve. I am assuming that the machine used to hold the tube produces a round that punctures the tube. I thought I had done something wrong two times, but three times is the charm. I only rode this bike once after putting the newest tubes in. I put it on the road. When I hit 80 pounds, the tube blew. Wow, given that it's rated at 112... It was a big let down. I will not recommend these tubes to anyone.
👤I can't recommend these brands. Bike tubes are the type of thing you buy and they sit on the shelf until you need them, but they turned out to be unreliable. One of the tubes was installed a year ago. Since the tube was installed, the bike is rarely used. It was used four days ago and got a flat. There is a It wasn't a puncture. A hole was created where the stem meets the tube. The location made it impossible to patch. These things happen again. I filled the 2nd tube to 1/3rds pressure after installing it. All was fine when I checked it the next morning. The bike has not been used since the 2nd tube was installed. I was expecting it to be a problem at the stem/tube connection. It was not. The tube split. There was a small separation on the rim side of the tube. It could not be patched because of the location.
👤Three of the four Sunlite tubes that I bought in the last month have failed. I'll give that one the benefit of the doubt, but it could've been a pinch flat/install error. The valve stem core failed in the same way as the other two. I will replace with any other brand if the fourth one fails this week. Look elsewhere? If you can! This is not the fault of Amazon or the seller, the price was good and shipping was good.
It's great for road bike tires. These are not normal bicycle tubes. The inner tubes are strong enough to stop flats for 2 years. Fibro-Seal Technology makes it possible to instantly seal punctures in your tubes up to 3mm. Designed to stop tube punctures from ruining your ride. The Presta Valve tube installs like any traditional inner tube. It is environmentally friendly. Water is non-toxic, non-corrosive and non-flammable.
👤I bought two of these tubes to not have to replace them in the future. I didn't ride my bike for a couple days after installing them. The front tire was flat when I arrived at the garage. I took the tube off the bike to look at it, and I found green slime leaking out of a dime-sized hole, and also slime leaking out of the base of the valve stem. This looks like a defect to me. I wouldn't buy this tube again. I inflated it to 45psi per my tire's specification.
👤These were bought because of the stickers that are blown around in Afghanistan. I wasn't going off-road just because the parking lot was there. I lost both tires in a week. They had 7 holes patched. Both were flat within three days. I decided to get the self seal because inner tubes are a commodity here in Bagram. They were in about 10 days. They were installed and have been free for two months. I find the occasional thorn/thicket/sticker in the tire, pull it out and keep on rolling. Thanks for the product that saved me from walking all over this base.
👤These tubes are heavy. Know that weight is a factor. The rubber in the "tread area" is very thick and there is a lot of sealant inside. You must not pinch the tube when you install a tube tire. If you don't do it right, you will end up blaming the tube, and I don't care how good you are. You have to follow the proper procedure to remove the valve stem. If you don't have tire spoons, a couple small box end wrenches are the best substitute. If you're not careful with any tube, you will probably pinch it and it won't hold air. Make sure that the valve stem is aligned with the wheel before inflating, and that the tube is not twisted. If something is not right with the installation it will probably damage the tube or not work right because it is so thick. If you release pressure through the valve, it will plug up with the sealant. This doesn't ruin the tube. The green valve stem caps are reversable, and the reverse side is a valve core removal tool. Remove the valve core and clean it, then replace it. Park wheel with valve near top of wheel and let sit for a few minutes before adjusting pressure to avoid clogging valve.
KOAREL is committed to providing 100% satisfactory service and always focuses on their customers. If you are dissatisfied with their products, please contact them, they will solve the problem for you, and they will replace you immediately. They will do their best to make you full. 700X38/35/ 43C is the wheel size. 48mm is the length of the American Vale. The package includes the bike inner tube and rim strip. The bicycle inner tubes are made of strong butyl rubber, so they will last longer than average. If you're unhappy with the items, they're happy to exchange them for something else.
👤The tube looked good when I put it on. The tube split at the seam within a week. It was not from a sharp object, but from the tube.
👤It was very easy to install this. It was not good. I keep my bike outside, but it was flat the next day. I removed the tube. There was a tear along the seam. They both went back.
👤I had a similar problem when I tried the first tube, it developed a leak after I installed it. The other one works well. I'm still using it and I don't know what to tell you, you're paying for one good tube, if you want to be sure. I will never buy them again.
👤I missed the return policy on this item. The tire went flat again after the new tube was put in. The tube was leaking after being checked for air leaks. A faulty tube is definitely the case. The tube is very thin. Would not recommend it.
👤My tire was flat. We ordered this from Amazon because the valve stem had gone bad. I removed the back wheel, took the tire off, and put the new tube in. Re-installed the wheel after filling the tube with air. It was very easy.
👤The inner tube comes with a rubber piece around the rim so the spokes don't poke a hole in it. The old tube came off when I took it off.
👤The reviews seemed to be of good quality. They are not! I got out of the tube. The second one will not be put on to replace it. The tires are only 40 miles long. The tube split, there was no puncture.
👤I paid $22 for a tire to be replaced at a bike shop. I got a flat on the first ride. The inner tube split. The difference in quality is noticeable after you bought these inner tubes. The tubes come with liners. The product is a great price.
👤The inner tubes had a hole. There is a Not good quality.
-02: A threaded fork is converted to threadless. High pressure blow outs are prevented by mold cured rubber. The inner tube was reliably tested. The valve type and length are listed. 40mm with cap. It's great for road bike tires.
👤The reviews addressing the incorrect photos are being added. There are multiple photos of a Schrader valve tube displayed on the product page. Although the style is referring to the type of tube rather than valve, it is very misleading when combined with the photos and lack of valve type in the product title at the top of the page. The only other place where it mentions the Presta valve is in the drop down selection. That is where you would specify valve type. Many people have complained about this, but have been generous enough to give it 3 stars. I am giving this product a 1 star because it is the wrong product and our plans have been delayed because I need to order another tube. There is a It was my mistake for not reading the entire page, but it was the result of a major error that has already caused multiple mix ups. A good product is only good when you can use it.
👤Had to replace a tube. I bought two of them a while ago. Within half an hour, I heard a loud pop. I went to the garage to get a new tire. I noticed a large tear in the tube when I removed it. Very disappointing. One day later. There is a I replaced the same brand tube that was 18 months old with the one I used above. It blew out while riding. There was no damage to the tire or the roadway, but a tear in the tube. The replacement blew with a similar tear. I bought the original in July of 2019. I ordered two more in December. The first one was working well. There is a The first spare I put on blew when I hung it on my garage bike rack. The second was still on my work bench when it inflated to 50psi. On smooth Florida roads and trails, I ride 60 to 100 miles a week. There are three failures from this company. I wouldn't.
👤I replaced 2 of them on my bike. It was flat to 40 lbs of pressure. Seemed great... Welllllllllll... They both popped within 12 hours. It was terrifying to hear in the middle of the night. I had a flat in my back tire. I would suggest getting a quality tube. I have changed many tubes on my bike. Everything from bmx to simple road bikes... Don't buy them.
Excellent resistance to ozone cracking, weathering, or aging can be achieved with Solid Thick Butyl Rubber. Most 700c road bikes have between 32 to 47 wide tires and the replacement Inner Tubes are for them. It adds comfort to your ride. You won't feel the bumps and hollows because your bike glides along, protecting you from the force. That is comfortable. This inner tube was designed to be explosion proof. It immediately creates a seal to prevent damage if it is punctured. It's safe in any weather condition. There is no tool installation. You will be back on the trail or track in less than 5 minutes with their tire levers. It's so easy to replace the inner tube. Made heavy duty from quality materials. They do it right by making dependable and durable inner tubes. Count on it!
👤I needed to replace tires in my kids bikes. The valve and tube meet were split. Two other people will not hold air. Half of the 6 are not good.
👤The initial impression is worth something. It's too early to assess longevity of the first 2 of 6. I'd prefer a spare valve, but slimed tires still go down just over a longer period, so I'll settle for carrying a spare tube. If you've ever heard of new tubes going flat quickly, always check for thistle/splinter remnants in the tire with your finger, as these can be hard to see. There is a The spoke nut is where I've seen punctures. Happy riding!
👤6 tubes for $26 seem to be good quality, but I was a bit skeptical about them. I put two on immediately after 450 miles of mixed pavement and gravel running. I would buy them again.
👤The tubes worked well with my tires. The tire levers were disappointing because they broke on the first try.
👤I bought these for my 70psi max tires. They are an excellent value so far.
Bicycle inner tube 700 x 38c presta products from Street Fit 360. In this article about bicycle inner tube 700 x 38c presta you can see why people choose the product. Velotubes and Ar-pro are also good brands to look for when you are finding bicycle inner tube 700 x 38c presta.
Street Fit 360, Velotubes and Ar-pro are some of the best brands that chosen by people for bicycle inner tube 700 x 38c presta. Find the detail in this article. Crabtek, Pyramid and Slime are also brands that their products are worth to check.