Flat Out QuickStrike Tire Sealant Off-Road Formula - Prevent Flat Tires, Seal Leaks, Contains Kevlar, 32-Ounce Bag

The best fat tire and dirtbike sealant we have found and love the gallon size. Pump clogs but clears with a strong push and love that it is water cleanup.

Easy to use

Every one need to buy this product it amazing and you ever had to worry getting a flat again. I been using for 2yr and I have 8 screws, 2 allen wrench,8 nails and more and still riding with no flat.

I just finished putting FlatOut QuickStrike Off-Road formula into both 26x4 tires on my Aventure.2 eBike. I put about half of the 32 oz bag into each tire. I say "about half" because there is really no way to accurately determine how much has been applied. As many other users have reported, it was a challenging process because of the frequent clogs that needed to be cleared. It took me ~ 45 minutes to do the first tire but I was able to do the second tire in less than 15 minutes because of lessons learned. Hopefully what I learned in this process can be of help to others: First, find a way to get the tire off the ground a few inches so there is no risk of breaking the bead. I used a tie-down strap attached to an A-frame ladder to lift one end of the bike at a time so that the tire off the ground. Put some cardboard or other suitable material beneath the tire to catch the inevitable drips/spillage. Rotate the wheel so that the valve core is close to the 3 or 9 o'clock position. Put a paper towel right below the valve core and another over the brake rotor, at least on your first tire. Cut the cotton tip off of several Q-tips that can then be used to push into the valve core when (not if) a clog occurs. Then try pushing the Q-tip into the valve core to feel for any restrictions that might be problematic while inserting the FlatOut. I recommend that you wear vinyl or rubber gloves. When you do start putting in the FlatOut, apply a firm, steady pressure to the bag. At first, I was only able to apply a small amount (maybe 2 seconds worth) before the flow stopped. I then had to remove the tube from the valve core, push the trimmed end of the Q-tip into the valve core several times until I cleared the clog then repeat....... I am guessing I had to do this at least 15 times with the first tire and it took nearly 45 minutes to complete. By the time I did the second tire, I had become proficient enough that I only had to clear about 5 clogs and it took me less than 15 minutes to complete. This may be a bad news/good news scenario. The bad news is that it is a pain in the a** to get this stuff into the inner tube. The good news (at least in my view) is if it clogs this quickly and easily, it should stop an air leak fairly quickly and effectively. I guess I would rather spend a frustrating hour or less in the comfort of my garage putting this into my tires than who knows how long and how far it might be to push a heavy bike with a flat tire. Especially if you ride some of the remote bike trails that I ride. Suggestions for the manufacturer of this product: Supply this in quantities suitable for a single tire application so no guessing on the amount is required. Package this product in caulking tubes so that one can benefit from the mechanical advantage of a caulking gun or design some other method of application so that an individual's strength isn't the determining factor for a successful outcome.

Based on all the positive reviews out there about this product, I used this in my fat tire e-bike as soon as I bought it. I don't know how many flats I would have had, but I've ridden over 1,000 miles without a single problem. Maybe I'm lucky, or maybe the product works like a champ. Either way, it's great insurance against a flat tire - one of the worst experiences in biking. Some people say it's expensive, but it's actually quite the opposite. I think the people that say that haven't had to replace their original (cheap) innertubes. I just bought good innertubes from Kenda and they were $24 each, which makes this a no-brainer. It's guaranteed to last 10 years - that would be at least 40,000 miles for me, so basically the life of my innertubes. It's not at all messy to install if you follow the instructions. A block can happen occasionally, but it's really easy to clear and continue filling. I've only used the bags and not the pump, so I can't vouch for the pump either way. But since the cleanup is water and a paper towel, installing this in your tires is nothing to be afraid of. If you have a clog, stop and clear it before putting excessive pressure behind it, because I can see where that would cause a mess. Just disconnect the hose and take care of the problem, reattach the hose and continue. I think I had to do that once during the installation of two tires. Again, I'm using the bag and not the pump. I expect it to function as designed since I've seen youtubers doing tests for functionality and it definitely works. It's great peace of mind when you're miles away from home and there's almost no chance of you getting a flat tire.

This stuff is like magic, just watch the youtube video of the guy that drill 4 holes in his tire/innertube. He filled once, it sealed them everytime, well accept for the last one but if he had put more of this in, it would have sealed that one also... i live by this stuff on all of my ebikes paired with at least 2mm thick heavy duty pivotrax innertubes .. this is a no brainer if you watch that video..

I use this in John Deere 3 series tractor. I had one issue with a pump while installing over 3 gallons. Once you figure out the pump clog, it's pretty easy to unclog.

Flat Out works great for sealing holes in your tubes or tires, but what makes the product work so well is also what makes the installation of the product so horribly frustrating. So, if you can handle the frustration and have enormous patience, then you will do well with Flat Out. For me, after removing the Shraeder valve and inserting the product tubing, I could squeeze maybe 1/10th of the product into the tube before the Flat Out would do its thing and seal the hole, essentially stopping the flow entirely. So 10-12 times on each wheel, I had to remove the tube and clean out the valve hole with a nail. Basically sticking the nail carefully into the valve until it would punch through the sealant, then swirl it around a bit until the goopy mess would drip out onto my bike. Two wheels took me an hour, and I had a mess to rinse off my bike and garage floor. So... What makes the product good is also what makes it horrible to install. Be prepared.

Purchased this for my fat tyre ebike. Very easy to use, half a bottle in each tyre 26x4 inch. Hopefully it does what it claims. Flatout must be confident as they offer a free tube replacement if the product fails. Piece of mind for long distance riding 🫡

Really like this. Far as I know it's not been called upon but who can know for sure. Anyway, it gave me the confidence to go riding in the woods a little more. I think I am OK to trust it, I really hope I never get any more punctures...EVER!

Failed to seal two pinholes on a defective e-bike new inner tube (or which I accidentallly pinched). Any excuse that the sealant failed to spread before riding is invalid because I always massage in before fitting to wheel. So I patched the first hole, to find it lost pressure again leaving left a wet hole obetween the inner and tyre n the second pump! It appears either not to work at all or takes too long to seal. I have kept the sealant in the tube after the 2nd patch, but have very little faith in it. Always carry a spare inner!