The first photo is a Service Kawasaki (lol mick!)
2008 KX500AF
I made a couple prototype pipes for the test bike.
those did not go on customers bikes.
FMF did make pipes and silencers specifically for this bike.
and all the 2007 and 2008 KX500AF models have FMF pipes made for that model installed on them.
yes they look similar (to the CR pipe) ,and should ,
since FMF used the general molds/stampings of a the CR500AF pipe they have made for us for almost ten years as a starting point.
This was a much closer starting place to make the new KX500 pipe from , than a traditional KX500 stamping.(way off)
yes FMF dynoed the varioius pipes and the design to ensure that style stamping and mold where good fit for this engine.
it performs as good or better than a KX500 engine with an FMF OEM styled pipe.
I would be glad to sell anyone a KX500AF pipe and silencer for
thier own home conversions..
but of course i cannot gurantee fitment.
(you may not locate things exactly where i do in our bikes)
but it should be close or easy to make fit.
(if you can get the engine in the 450 frame ,this pipe wouldnt challenge you to fit it to your scoot?)
as far as being good handling and good power,
a local rider just smoked a local MX race in the Open A class
on an 08 model..
not a big deal but proves the bike was plenty competitive
against the 450's in mx.
(this rider was KX450F mounted earlier in the year )