no idea matey, a mate bought it for a vfr800 bout 6 years ago and was shittin himself about the noise all the way home. he took it straight off and it sat in its box til yesterday when i was checkin out why my speedo didnt work (cable snapped) cos i didnt have a cable to hand and saw my cutting disc lookin all neglected. next thing i knew my neighbours all hate me! hahahahahahaha.
i wasnt goin 2 keep the b4 but im now planning a usd front end