Racerunner Radical

Born 100% Radial

Introducing the true radial bicycle tire — the Zleen Racerunner Radical. Inspired by the raw efficiency of nature and crafted with Zleen’s unique technical and manufacturing expertise, this tire isn’t just a step forward — it’s a leap into the future of cycling.

The Racerunner — a lizard known for its incredible speed and agility. The master of navigating difficult terrains with remarkable ease. Be it a rugged land, rocky landscapes,
gravel paths, and dense forest trails, the racerunner weaves effortlessly over the uneven ground zipping between rocks and roots faster than the eye can follow.

Featherweight. Heavy-Hitting.
At just 550 grams, the Racerunner Radical shaves off a full 25% of the weight compared to the Zleen Leopard Pro — without compromising durability. Its slim profile and wide tread zone create a uniquely shaped cross-section for maximum resistance to cuts. With bead-to-bead fabric protection built in, you’re armored against impact damage — and still flying light.

Radial. Revolutionary. Radical.
Zleen’s Radical Technology marks a defining moment in bicycle tire innovation. With the 88° true radial casing, the Racerunner Radical breaks away from traditional bias-ply construction to deliver game-changing benefits:
+ 30% Larger Contact Patch
For near-absolute traction and razor-sharp cornering — grip like you’ve never experienced before.
+ 70% Higher Inflation Pressure
Slashes rolling resistance by an astounding 40%, turning every watt into momentum.
- 40% Lower Rolling Resistance
- 25% Weight Reduction