As the puncture protection fluid in tubeless tire systems dries out, this "milk" needs to be topped up occasionally. The conventional way is to pull the tire off the rim on one side and check whether the sealant is still in a liquid or dry state. It can then be difficult to get the tire back on the rim: A wild splashing of puncture milk or the tire not slipping onto the rim cannot be ruled out.

"Milkit" has a problem solver in several ways: using a specially developed valve and a special syringe, tubeless bikers can not only simply refill with new sealing milk. The tire pressure presses any remaining liquid milk out through the valve into the syringe and the milk can be checked for its condition and replaced if necessary. If the fluid is still OK, it can be added again immediately or new milk can be filled into the tire. The tire remains in the rim at all times - if the system was tight before filling, it will most likely remain so after filling. Nevertheless, even with "Milkit", the tire has to come off the rim once: during initial fitting, when inserting the valve.

A crowdfunding campaign for "Milkit" is currently running on the Platform Indiegogo. The aim is to raise 25,000 dollars to cover part of the costs for the production tools. In return, the crowdfunders will be the first to receive the brand new "Milkit" tubeless kits, which should be available from June.

The people behind "Milkit" are inventor Pius Kobler, salesman Sven Rizzotti and PR/marketing manager Anna-Julia Lingg. Together, the three tubeless innovators founded the company Sport Components AG, based in Zurich.

www.milkit.bike