Panzer are the latest to scale their lightweight, anti-pinch flat tire inserts developed for gravity mountain bikes down to a lighter, more narrow application for gravel bike riding & racing. In addition to Panzer Gravel bringing light flat protection to mixed surface riding, Panzer went out and developed their own sealant to eliminate the pitfalls of many latex-based solutions…

Panzer Gravel anti-flat, foam tire liners

Panzer Gravel tire liner, anti-pinch flat, anti-flat foam tire liners, tyre liner, Ride Panzer diamond shaped 5 sided foam tubeless tire insert

Using the same basic 5-sided shape as their MTB tire liners, the new Panzer Gravel scales down for 38-45mm wide gravel bike tires, making it one of just a handful of gravel options (with CushCore & Mariposa Tyreinvaders a couple of similarly sized alternatives.)

This pentagonal, or diamond-shaped insert is said to float more inside the tire volume, allowing the tire to flex & move unrestricted at low pressures, while still always being in place to protect against pinch flats. The Panzer liner is made of high-density, closed-cell foam with a smooth finish that allows sealant to move around freely within the tire volume without absorbing or collecting much sealant.

Panzer Gravel tire liner, anti-pinch flat, anti-flat foam tire liners, tyre liner, Ride Panzer diamond shaped 5 sided foam tubeless tire insert

The new gravel liner uses a slightly higher density foam than the mountain bike versions to account for the use of narrower tires. Another big plus is the ability to more safely ride out on a flat or cut tire that can’t be patched or sealed with regular sealant. Panzer says that after refining something like 70 prototypes for their original MTB tire liners, they were able to dial in the Panzer Gravel with around 7 generations to get the material, shape & width perfect for high volume gravel tires.

Panzer Gravel tire liner, anti-pinch flat, anti-flat foam tire liners, tyre liner, Ride Panzer diamond shaped 5 sided foam tubeless tire insert

For the time bing Panzer Gravel is limited to 700c gravel setups, but Panzer is tooling up to produce a 650b size later this year that will work for Road Plus sized gravel tires too. Each gravel liner weighs 75g, and they are sold in pairs for 100€.

Panzer Tubeless Sealant

Panzer Gravel tire liner, anti-pinch flat, anti-flat foam tire liners, tyre liner, Ride Panzer diamond shaped 5 sided foam tubeless tire insert

At the same time as they have been working on new tire inserts, Panzer also developed their own tubeless sealant in-house. Designed to stay liquid in the tire longer, the sealant is entirely polymer-based (no latex & no ammonia, with a neutral pH) which is said to prevent it from balling up inside the tire in everyday riding.

The sealant still manages to plug holes effectively, drying quickly when exposed to the outside air through a puncture. The sealant is of course compatible with tire liners, and it is distinctly yellow keeping with Panzer branding.

Panzer Gravel tire liner, anti-pinch flat, anti-flat foam tire liners, tyre liner, Ride Panzer diamond shaped 5 sided foam tubeless tire insert

The all-discipline tubeless sealant comes in an 11€ small 250ml bottle & a 17€ 500ml bottle intended for consumer use, and will also be available in a larger 3L bottle for bike shops.

Panzer products are available through about a dozen global distributors, with the greatest coverage in Europe.

RidePanzer.com

11 COMMENTS

  1. For real? How are you ride gravel where pinch flats are a concern? Lower pressures are good, but I don’t think I’ve ever seen anyone ride low enough pressures for pinch flats.

    • Me. I had endless pinch flats on 33mm tubed tyres ( there’s rocks in the gravel where I ride ) before I finally sprung for wider wheels and 40mm tubeless. Life is now more peaceful.

      • Run more air pressure. I think this whole low pressure thing is a ploy to sell all this crap to people that are too dumb to just pump up their tires a little more. Punctures have and will always be there but the number of people having pinch flat issues is way higher that it used to be. Just cause the bike industry says to do it does not mean it is in your best interest. Think for yourself

      • Sure, but this product is designed for tubeless tires, not tubes. I’ve never had a pinch flat on tubeless, but I also take the time to determine the optimum pressure for the conditions I ride in (often rocks, roots and ruts). I run it as low as I can without frequently bottoming out, which sometimes requires more pressure than is ideal for comfort, but the difference is typically only 2-3 psi in a 700c, 40mm tire. At 170 pounds, I typically use 30/32 to 33/35 psi. front/rear.

    • 1300 people just rode “gravel” over the Sierra Crest at Lost & Found. It’s chunky and steep.
      Gravel is more than Kansas. I saw multiple people with tubeless pinchflats.

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