Ultimate performance you could only dream of, now for real! Bridgestone Battlax S21 Hypersport radial tires are an awesome mix of the proven wet technology of the Bridgestone Battlax Hypersport S20 EVO Ultra High Performance tires and radical features that take dry performance to a whole new level. The superior stability of S21 allows higher entering speeds, a sharper line and faster exit - giving you a feeling of confidence and achievement through corners. You don't have to trade life span for top handling performance; the S21 clocks up to 36% higher mileage than its predecessor. Bridgestone's advanced tread pattern and compound technologies give you all the reassurance you need in the wet. Enjoy the thrill of riding in any conditions with extreme cornering, high mileage, and no compromise on safety3 Layer Compound (3LC) dual compound technology provides outstanding grip performance and high mileage wear by putting the right compound in the right part of the tread Enhanced Micro-Contact-Patch Compound (EMC) in the shoulders provides a larger micro contact patch for higher grip, more confidence and faster cornering in wet and dry Advances in compound development at the molecular level upgrade adhesion and grip for faster cornering and higher confidence High stiffness bead fillers.