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

#1 flat prevention/fixer. This stuff works so well and fast youll likely have trouble with it plugging up the valve stem when adding it to your tube, great trouble to have unless you enjoy flats 10 months not one flat i have lost 5psi a couple times but that was after pulling a nail and screw. With any other tube sealant i would have had to patch the tube but not with flat out. A must for fat tire bikes they love picking up nails screws tweezers staples glass but flatout stops leaks before youll notice youve got a problem.

I use this as a sealant in my tubliss dirt bike wheels. Always able to get a good seal after mounting despite having some old used tires with beads that are a bit buggered up. Also Does a great job sealing little punctures and is a great lube for mounting or when running low PSI.

Amazing. Ran over a nail and got a flat. Applied patches, but tire was flat again the next day. Found a 3 inch ten penny nail completely inside the tube, ordered this product and it sealed every leak immediately.

Needed a sealant effective against larger punctures like nails and screws so I purchased this product for my 20x4 inch Ebike tires. Unfortunately I installed the product in near darkness while in the field and found out getting the sealant into the tubes through the Schrader valve stems is not as easy as it appears; also found out more of this product is not better. The product required numerous attempts to get into the tube due to clogging (forms seals in stems) and the need for repeated clearing of stems. I purchased the 32oz bag of Flat Out and the instructions on the bag indicated a 4" fat tire may require 10 to 16 ounces of sealant. I considered this a dose range for all 4" tires and not a strict 10ounce max for 20x4" tires (more ONLY for larger diameter tires). With nearly 14oz of material in the rear tire took a test ride. The excess sealant pooled in one area of the tube and the resulting severe imbalance took a portion to the tire completely off the rim. Near disaster on an Ebike

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 size container was just enough to treat both my wife's Gotrax F1V2 e-bike with 20 x 2.6 tubed tires and mine. I highly recommend elevating the wheel off the ground before adding this product as it will help keep the bead in place. Adding air can be difficult unless you have a screw on inflator as the tube valve stem is hard to grasp and easily pushed back into the tire. So far we've had no flats but haven't ridden as much in this brutally hot summer. Looking forward to fall and many more excursions. FWIW transporting these two e-bikes in my wife's Kia Soul is a breeze as they fold into.

I’ve tried several tire sealants over the years on my ebikes and scooters, but FlatOut QuickStrike is by far the best I’ve used. From the moment I added it to my bike tires, I noticed a difference—it’s incredibly easy to install, and you don’t have to convert to tubeless to benefit from its protection. The formula is thin and spreads quickly, sealing punctures almost instantly so you don’t lose much air. What I feel that really stands out is how effective it is. I ride my ebikes through rough terrain with lots of thorns and debris, and since using FlatOut QuickStrike, I haven’t had a single flat ( unlike before ). Even when I’ve picked up multiple punctures, the sealant has handled them all without a problem. I feel that the peace of mind it gives me is priceless, especially on long rides or commutes where a flat could ruin your day ( and It has in the past ). Another big plus is that it’s a one-time application—it won’t dry out or turn into a mess inside your tire ( like that Green Stuff ). It’s also safe for both tubes and tubeless setups, and works well in my 20 inch and 14 inch tires. I’ve used it on my ebikes and scooters and the results have been consistently impressive. Make me feel confident of the durability of my tires on my ride. I bought the gallon bottle because I have a few ebikes and scooters. this stuff works great! If you want to spend less time fixing flats and more time enjoying your ride, this is the sealant to get. Highly recommend!

This stuff is great! Have not had a flat on my offroad ebike since I put this in.

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!

I very rarely complain about a problem with any purchase that I make. However I make an exception with this stuff. Despite my best efforts I could not get much of the contents into the tube. I even took the tube out of the wheel— to no avail. I very much regret buying it!