The Perfect Racer: Faced with the extreme challenges of today's XC tracks, we completely revised racing ralph. The result is a very fast and versatile XC profile, specially developed for the rear wheel. Numerous grip edges in the tread center for super traction and excellent acceleration distinct shoulder studs for excellent lateral grip good rolling properties and extremely quiet Technologies: ADDIX Speed ADDIX Speed is the compound for XC race specialists, it catapults our XC tires into a new performance dimension. It's the answer for those who’d like to go even faster. There’s only one thing that ADDIX Speed really loves and that’s speed. So the rolling resistance has been chopped yet again. Super Ground Combines lightweight and stability. Feels comfortable in any terrain. Balanced ratio of puncture protection and smooth-rolling. For flowing trails, long rides and any terrain. Tubeless Technology For all ambitious sports cyclists, Tubeless is the right choice. Only Tubeless achieves the best values in terms of more speed, grip, puncture protection and comfort.