Had one on my GSXR 750 K6 and never looked at it on a hard ride out don't get time to look or at the speedo hehe, a true rider should not need one the music off the pipe should give it way and the feel off her "two should be come one :HappyRoll_ANPIUI:"

Don't waste your cash pal spend it on up grade stage 1 and 2 air filters...etc