Bridgestone Battlax Hypersport S21 Tires Battlax S21 Hypersport Tires offer significantly improved dry grip and wear life without sacrificing wet performance! Features: Dry grip and wear life significantly improved without sacrificing wet performance Pulse shaped grooves and center deflectors to accelerate water drainage, boosting wet weather grip and reducing tire slip Dual compound front tire (3Lc) with revised profile generates higher grip at lower lean angles Triple compound rear tire (5Lc) with revised profile provides improved stability and durability New enhanced Micro-contact-patch compound (Emc) technology used for both front and rear shoulder compounds EMC increases grip potential and improves thermal stability to make sure the tire performance remains consistent as temps go up Tubeless (Tl) Blackwall (W) - rated for speeds up to 168+ MPH