400ex exhaust
#4
on mine i have the White Bros Pro meg race series and some say ti gives you the biggest power changes plus the good thing about it is you can adjust it for your style of riding, it looks great too, there are some pics of it in my profile!
#7
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#8
Hummmm. I was wanting to make A post on the same line as your's. Only with A Z400. I have heard differen't story's about this subject. Some say just A slip on would boost lower end. Some say you need A full exhust. And other's say you also need to rejet & Put A new rev box in. That leave's me feeling like I'am not really sure which way I want to go either. I know this wasen't much help to you, But it's got me scraching again.
#9
With the 400ex go with the Big Gun Race series my good buddy just bought a 400ex and right away got a big gun race pipe loves it said it really awakend the motor. thats what he says anyway [img]i/expressions/face-icon-small-cool.gif[/img]
MIDDLEAGEDCRAZY I put a Pro Circuit T-4 full exhuast on my girl friends z-400 rejetted and took the air box completly off, and put a K&N on the same day. I couldn't beleive how snappy it was when i rode it. Throttle response was awesome. Havn't had any problem with at at all. Now it has a 440 kit, ported intake, prefomance CDI box, bigger carb, lowering kit, webb cams, runs like a BEAST!! have a pair of Dune Runners on it and she runs with the yfz's that just have pipe and air box mods can't beleive it plus shes pretty light.
MIDDLEAGEDCRAZY I put a Pro Circuit T-4 full exhuast on my girl friends z-400 rejetted and took the air box completly off, and put a K&N on the same day. I couldn't beleive how snappy it was when i rode it. Throttle response was awesome. Havn't had any problem with at at all. Now it has a 440 kit, ported intake, prefomance CDI box, bigger carb, lowering kit, webb cams, runs like a BEAST!! have a pair of Dune Runners on it and she runs with the yfz's that just have pipe and air box mods can't beleive it plus shes pretty light.


