find out! unless your a squid and wanna get one just for top speed! these bikes arent just made for top speed but road racing. they have hella torque for great outta turn acceleration. but anyway if you must know, the R1´s top speed is 182 or 189 i believe and the R6 is slightly lower at around 175(i believe.. havnt found out yet!) i know the R1 is quick though, on the 2003 R1 i have gotten up to 175.