Anti-Pinch Flat ODYSSEY Optis Insert 700x25/30 without Valve

The ODYSSEY OPTIS pneumatic tyre insert (without valve) offers a unique approach to tubeless protection. Unlike traditional foam inserts, the OPTIS (Odyssey Pneumatic Tyre Insert System) is an independent pneumatic chamber that sits inside the tubeless tyre and inflates to a higher pressure than the tyre itself.

This design allows you to run relatively low pressure in the tyre to enhance grip, comfort and efficiency on rough surfaces, while the high-pressure insert keeps the tyre seated and helps protect the rim against impacts and pinch flats. As a starting point, Odyssey recommends lowering tyre pressure by about 10% and inflating the OPTIS roughly 25% above the desired tyre pressure, while always ensuring a higher pressure inside the insert.

The OPTIS also exerts pressure on the tyre beads to keep them seated against the rim. This function significantly reduces the risk of partial tyre unseating and air loss ("burping") under high loads. In the event of total tyre pressure loss, the insert helps to keep the tyre temporarily on the rim, providing limited run-flat capability to allow the rider to slow down and stop more easily.

Particularly lightweight compared to many traditional tubeless inserts, the OPTIS system is also easy to install: mounting is similar to fitting an inner tube, and inflating it helps push the tyre beads into the rim hooks.

Developed for performance, this system was notably showcased at the highest level when the Lidl-Trek team used it during the 2026 Paris-Roubaix, following extensive testing ahead of the classic.

Ref: 16112483762556