VittoriaAir-Liner Light XC-Trail Tubeless Tire Insert (Return to Product Page)

We installed these inserts on 5 bikes last year, and have not had a flat yet. We no longer carry tubes with us on our rides; instead we carry plugs. We know eventually we will get a flat that can not be plugged, and then we will have to test the "ride flat" capabilities of these inserts. Until then, we don't notice the weight and can't tell we even have them. But, when I hit stuff really hard, I'm glad to know these inserts are installed.

Bought these so I can run lower pressure (lower pressure = more grip and better rolling resistance). I've dropped the PSI 3-4 front and rear and have been very happy with the results. Also ditched carrying an innertube during races, because if you get a puncture that won't seal with plugs, you're kinda screwed because it's not easy getting these on or off and if you threw in a tube, you'd be forced to ditch the insert on the trail or toss it over your shoulder.

I put a pair of these inserts on my cross country/marathon mountain bike. I don't notice the weight, they are feather light. I have not gotten a flat, so I cannot attest to riding on them with a flat. They are easy to install.

I got these so that I could lower the tire pressure to have a smoother ride. I lowered the tire pressure by 3psi (both front and rear). After a couple rides (not a ton of testing) I have not noticed a smoother ride. If anything, they feel a little more springy. I'm assuming the inserts are taking up air volume in the tire, like adding tokens to your fork. I reduced my compression on both fork and shock. They do feel a tad stronger on bigger hits.

Still not completely sold, but so far so good.

Recently switched from CushCore. These and much lighter and easier to install. The material is more compliant that the harder Cush, which makes it great for XC, marathon, 100 mile MTB racing. Hardly notice they are there.

Didn't prevent a flat but allowed me to finish a race on one. Able to run a little lower pressure and the tire feels more stable in turns. Would recommend if you are racing technical xc terrain.