(6 reviews)
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FlatOut™ is a one-time tire additive that prevents flats due to punctures up to 1/2’’ and stops slow leaks around the bead or valve stem or due the natural porosity of the tire. It is made of synthetic TangleTek™ fibers including KEVLAR™ and unique DamRight™ fillers suspended in our special Never-Settle™ base fluid (non-adhesive, non-toxic and freeze-resistant). When a puncture occurs, escaping air forces FlatOut™ into the wound creating an airtight fiber jam. Think beaver dam but with the fibers and fillers forming an amazingly durable plug! And, It’s proven, having been used in Military and industrial applications for decades!


20" Tire = 10 Oz

24" Tire = 12 OZ

26" Tire = 16 OZ


  • 5
    Live The 13!

    Posted by Jov8 on Dec 6th 2023

    These guys always helpful. Great new location, downtown Grass Valley.

  • 5
    Ebike Confidence...

    Posted by Van Liang on Sep 17th 2023

    Finally had the local bike shop installed the FlatOut into my ebike tires. Now have confidence in taking my new ebike out into the open world with less fear of encountering flats. How my future rides w/o flats remains to be seen while navigating obstacles cautiously the best I can.

  • 5

    Posted by Dean Mccoy on Aug 28th 2023


  • 5
    Great service and rentals 13.

    Posted by Kirsten Clove on Jul 11th 2023

    Great service and awesome bikes! We have had service on a bike we own and have also rented a bike from Area 13. They were careful to consider what bike would meet our needs best, let us try it out first, and include everything we needed. Couldn’t be more pleased.

  • 5
    It works

    Posted by S. Tackes on Feb 26th 2023

    After watching the reviews and the tests that Kyle ran through in comparing products, I gave FlatOut a try. It is amazing. I have yet to have a flat despite a lot of goatheads and other sharp objects on my rides. This stuff really works. Plus, the company is very responsive. I did not see a recommendation for how much to use on a 5in fat tire bike and they responded right away.

  • 5
    This stuff saved me on the ride

    Posted by Veronica on Feb 26th 2023

    I can't believe I ever used slime! This stuff saved me on the trail. I went out early in the am and ended up getting a flat. Once I got it home, I was exhausted. Never again! I got a new tube and followed what Kyle had on the video. Flat Out lets me ride anywhere and I haven't gotten a flat at all.