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So I have a 81 KZ550 the exhaust is pretty much a straight thru 4-2 w/o a crossover, and i now have pods because the old filter was shit. Now to the symptoms: - i get some pretty decent backfire while closed throttle decelerating above about 5500 rpms - if you rapidly open the throttle to full...

I believe that either the speedo or tach or both are off. Does anybody know a good way to check if they good? and if they are crap a way about getting them to read true? Thanks P.S. i have a 1981 KZ550A

My exhaust for my KZ550 is rusted and fell apart when i took off yesterday... its back on now more of just as open headers. My question is: Has anybody ran open headers? my bike doesnt sound that loud (at least while im on it) Secondly are there any other exhaust manufactures out there besides...

So I picked up this 1981 KZ550 for fairly cheap and it was in good running order but the handle bars weren't quite lined up right. I thought is was something stupid like the bar was bent but it seems like there is more to the issue. this is how it sits in my garage right now What should i...

So i just picked up a KZ550 that i plan to transform into a cafe bike for riding around college and such. I love the solo seat look with the tank matched hump but would like to have the ability to have someone ride with me. My idea was to make the hump on the back able to flip up and use it as...