Schwalbe racing ralph evo mtb tyre ddefencethe optimal competition tyre still hungry for success it has a new tread design and triple nano compound cuts like a knife through the toughest terrain more aggressive too holds a tight line in curves with its new sharks tooth u blocks high density high density guard is a unique puncture protection technology only available fromschwalbe it has been jointly developed in co operation with american firm warwick mills warwick is a specialised m