Specifically tuned for front wheel use, this cross-country tyre is a perfect pairing for Schwalbe’s Racing Ralph rear tyre, bringing you the ideal balance of low rolling resistance and excellent traction over various surface types. Additional Features: Shifted centre blocks enable precise steering and high braking traction Stable shoulder blocks for precise steering Very quiet rolling characteristic with excellent rolling resistance Recommended Pressures: 29x2.25”: 1.8-3.7 Bar (26-54 psi); 29x2.35”: 1.6-3.5 Bar (23-50 psi) Weights: 29x2.25”: 645g; 29x2.35”: 705g 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 Race In no other discipline is the focus on rolling resistance and weight as critical as it is in cross-country and marathon competition. With the Super Race construction, Schwalbe is also setting new standards in suppleness - no other carcass glides so silky smooth over the ground and thus providing traction as Super Race does. 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. E-25 Tyres with the recommendation "E-25" are the perfect choice for all pedelecs with pedal assistance up to 25 kph. The most important criterion for this recommendation: security.