I purchased the 2004 Raptor 660R about two months ago. I have added a few things but I'm still wanting better and faster performance. So far I have put on the yoshimura slip on pipe, the K&N air filter and lowered my sproket one tooth smaller than stock. If anyone has any information That would be great. I'm not looking to go out and buy everything at once, so what should be the first purchase.

 

jet kit,

link to jetting

 

DONT get that jet kit, just buy single jets yourself if you need them. You should goto a full exhaust system and a pro flow k&N kit with the lid removed and a good rejet. That would give you a good gain! Other than that you're gonna have to start dipping into the engine, and I donno if your up for that. You could maybe get a CDI or some non performance mods.

 

buy a stage one hot cam!

 

my link above is not meant to be bought, just a reference...

I wouldnt touch the engine until the warranty has expired....get that pipe and jetting down...then ride

 

Quick Tip:

Buying aftermarket needles from Alba or DynaJet will make it much easier to get your jetting spot on. If you start modifying your engine, you will find it is a necessity to have aftermarket needles.

~HoundDog