Why You Should Use Tannus Tubeless Fusion as the Ultimate Rim Protection
f you’ve ever felt that heart-stopping thud of your rim hitting a rock, you know that standard tubeless setups have a limit. In our latest technical breakdown, we looked at a solution that doesn't just "help" prevent flats—it acts as a dedicated insurance policy for your wheels: the Tannus Tubeless Fusion.

Here is why this modular system is the ultimate rim protection for aggressive riders.

1. Modular Strength: 30mm Barrier
The "Fusion" isn't a single insert; it’s a modular system. As demonstrated in the video, it combines two separate layers of high-grade Aither foam—the Lite and the Pro—to create a massive barrier between the trail and your rim.

When you nest these inserts together, you get a staggering 30mm of impact protection. This is significantly thicker than standard liners, ensuring that even the most violent "bottom-out" moments are absorbed by the foam rather than your expensive carbon or alloy rims.



2. Engineered Sidewall Support
One of the biggest issues with running low tire pressure is "tire squirm"—the feeling of the tire folding over in a fast corner. Because the Fusion insert occupies so much internal volume, it provides structural support to the tire's sidewalls from the inside out.

-Lower PSI: You can drop your pressure for maximum grip on wet roots and loose dirt.

-Bead Security: The insert helps keep the tire bead locked against the rim, preventing "burping" (air loss) during heavy lateral loads.



3. Vibration Dampening & Resilience
Aither foam doesn't just protect; it performs. In the video, we demonstrate the "springy" resilience of the material. This foam is engineered to absorb over 50% of trail vibrations and high-frequency chatter.

By dampening these impacts before they reach the rider, the Fusion system reduces hand fatigue and keeps the bike feeling "planted," allowing you to maintain momentum through rock gardens and technical sections.



4. The Professional Choice
When you see the internal structure of the Fusion, it’s easy to see why it’s becoming the choice for riders who charge hard. By choosing a system that occupies the majority of the tire's air cavity, you are shifting the work from the air pressure to the foam's structural integrity. It’s the difference between hoping your rim survives and knowing it will.