White bros R4 slip on (400ex)

[yellow400]

I was thinking about getting the white bros r4 slip on. Does anyone have this?? do you have to rejet, and is it a loud slip on??

thanks

[ridered86]

just got my pro circuit the other day and i love it it gave me so much power. could do long hill climes no problem dont have do leave second or third. its awesome...imo get a t-4


also k&n power kit

[crashinmatt]

i have the WB R-4 slip-on. i love it compared to the last pipe i had, which was a supertrapp. it is quite loud though. i rejetted after but i also got a K&N filter so i needed to anyways. its a great pipe. it mounts up solid and dont move at all, which my supertrapp did and i hated. so ifd ur thinkin about gettin the R-4 and dont mind a little noise then i would say get it. its a nice pipe.