Vittoria Air-Liner tire insert launched

Bottom out bumper that protects your tires and rims

Sea Otter Classic Tires

Vittoria Air-Liner

There’s yet another player getting into the MTB tire insert game. This time it’s Vittoria, which launched the Air-Liner at the Sea Otter Classic. Similar to offerings from Cush Core, Flat Defender, and Huck Norris, the idea with Air-Liner is to lessen the chance of tire puncture, protect your wheels, and enhance overall ride quality by allowing you to run lower pressure in your tires.

Vittoria Air-Liner

The Vittoria Air-Liner comes in four widths (think XC, enduro, plus, and fat), has a claimed weight of 160g per liner size small when cut for 27.5 (it comes in 29er length), and sells for $170 for a set. Set-up requires the user to cut down the liner as needed, then poke holes through each end of the liner, attach them together using a zip tie, and then cover up the zip tie with an included Vittoria-branded sticker. Here’s an install demonstration video.

The closed cell foam inserts have cutouts top and bottom that allow it to interface with any size valve stem and creates an air pocket between insert and tire that’s claimed to keep the tire’s tread area more supple for better traction and braking performance. The closed cell foam won’t absorb sealant either.

Vittoria Air-Liner

“Basically you get a bottom out bumper, which protects your tires and rims,” explained Vittoria marketing man Ken Avery, adding that the liner has a 2000-ride hours lifespan and that Vittoria sponsored rider Hans Rey went from running pressures in the mid-20s down to the mid-teens. “Because it reduces overall air volume in your tires, there’s less spring and more of a damper effect. Essentially when your tire hits something the Air-Liner’s foam compresses in progressive way preventing your tire from bottoming out on the rim.”

Vittoria Air-Liner

Avery says the Air-Liner is also easier to install than some of the other inserts. “You just get one of your tire’s beads in, then insert the liner just like you would a tube, and then pop on the tire’s other bead and inflate,” he said. “It’s really easy.”

Vittoria Air-Liner

And even if you do get a flat when racing enduro or DH, with the insert in place it’s more likely you could ride out the stage and then deal with the repair. “I rode through a rock garden with a flat, and outside of a little increase in rolling resistance due to the flat, I really didn’t notice a difference,” claimed Vittoria-sponsored rider Macky Franklin. “And I didn’t have any rim hits.”

The Air-Liner will be available for purchase starting in June. For more information, visit This article is part of Mtbr’s coverage of the 2018 Sea Otter Classic in Monterey, California. For more from Sea Otter CLICK HERE.

About the author: Jason Sumner

An avid cyclist, Jason Sumner has been writing about two-wheeled pursuits of all kinds since 1999. He’s covered the Olympics, Tour de France, MTB world champs, and dozens of other international cycling events. He also likes to throw himself into the fray, penning first-person accounts of cycling adventures all over the globe. Sumner has also done extensive gear testing and is the author of the cycling guide book "75 Classic Rides: Colorado." When not writing or riding, the native Coloradoan can be found enjoying life with his wife Lisa and kids Cora and Tommy in and around their home in the MTB Mecca of Crested Butte.

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