The Schwalbe Ultremo ZX tyre now offers 15 percent lower rolling resistance, greater puncture resistance and higher mileage: Thanks to new compounds and patented protection belt, Schwalbe has succeeded in making the Ultremo ZX a competition tyre of the highest order.

This high-end all-rounder clincher tyre is perfectly tuned for competition road racing. The rolling resistance has been considerably reduced compared with the previous model, while at the same time Schwalbe added material; nevertheless it remains a light 195 grams. Slightly reinforcing the rubber layer means it has more robust shoulders giving it appreciably more durability and making it a high-end all-rounder that is perfectly tuned for competition road racing. "ZX is the best Ultremo yet," said Schwalbe technician, Markus Hachmeyer.

The Ultremo ZX has been equipped with two technical innovations, which are now benchmarks in tyre technology:RaceStar Triple Compound and HD Speed Guard. "Triple rubber compounds such as RaceStar have become our trademark," explained Hachmeyer. "No other bicycle tyre manufacturer can combine rubber compounds in such a precise fashion in volume production." Due to the technically honed arrangement of several compounds Schwalbe succeeded in combining seemingly contradictory properties - for example good grip and low rolling resistance - into a single tyre. Only the combination of compounds makes this kind of maximum performance possible.

RaceStar Triple Compound
The RaceStar Triple Compound is composed of three basic compounds that are also new. In so doing, these three compounds have an effect precisely where they are needed. In the center of the tyre, durability and resistance is added. This is where Schwalbe has put a wear-resistant, low rolling resistance compound that, at the same time, grips well: The center compound. In contrast, the prime requirement on the tire shoulder is grip. The shoulder compound has great adhesion properties. It is very flexible, remaining in contact with the road surface while absorbing bumps and so does not lose traction under severe cornering. A super-fast, light-running base compound is positioned under the tire’s center tread.

HD Speed Guard: Patented Puncture Protection
The second technical innovation in the Ultremo ZX is HD Speed Guard. HD stands for High Density and this new version of the tried-and-tested Schwalbe, aramid HD Guard is completely tuned for speed. Effective protection is achieved by using a patented technology that Schwalbe developed together with the US firm Warwick Mills, which holds 14 international patents for its high density weaving processes and is a world leader in innovative, industrial textiles. "It is the finest and densest fabric on the market. No other bicycle tyre protection belt gets anywhere near its weave density," said Hachmeyer. By utilizing this innovative technology for the first time it has been possible to create an ultra-light, extremely puncture resistant tyre and this latest Ultremo version with HD Speed Guard enjoys the same high-density protection as its predecessor, but with distinctly reduced rolling resistance.