Onza citius skinwall mtb tyrecitius means faster since 1894 the olympic games motto has been citius altius fortius meaning faster higher stronger perfect name then for this tire but just being faster wont do with this tire we aim to be the fastest of them all features dual compoundracing compound 55a65a combination of two different compounds 65a for low rolling resistance and long life on the inside and 55a on the outside for perfect grip on all downhill courses size 26 x2 4