i have a 2005 SE raptor 660r, I need more power. I have about $2000 to play with (some of that has to go for installing the mods). I mostly ride in fields, some pavement, some trails, some small hillclimbs, some play drag racing, and just a little but of everything. Ive searched but with so many different oppinions im not sure what to get. I know i need a full system pipe but not sure which brand to get? i want power all around (plenty of bottom AND top), i was thinking about a cam but not sure if i need stage 1 or 2 hot cam, i know im gettin a pro-flow, and maybe an 11:1 piston, but not sure if i want to go to a 686 or not? how much would the rod cost (heard of them failing on the big bores)? any more suggestions? thanks sry for all the questions

 

get. Full HMF Exhaust ( 380$ ) Pro-Flow with K&N ( 115$ ) 11:1 Piston 100mm or 102mm ( 150-225$ ) Hot Cam Stage 1 ( 115$) Only get stage 2 if you go over 11:1.... thats what i would get.

 

arent hmf more for bottom end? i love bottom end but want plenty of top also... when i go to the yamaha shop to order this stuff and i get the 102 mm piston do i need to ask for a stronger rod or what? is this a good idea ? also with what u told me i would have $left over what else should i get thanks

 

I'm pretty happy with my HMF, I gained alot of bottom and some top, plus it's a good looking pipe. Remember that if you go HMF you'll have to go at least 175/180 jets to make it run right, they tend to flow a little more than any other pipe. In my opinion CT is the best for a raptor but I'm more about looks and dont like the looks of a supertrapp, Definatelly get the pro flow and open that baby up, makes a huge difference. If you go HMF you wont be dissapointed, it has awesome low end and maybe get a high end cam to make up for the top end. Good luck!!!