Might be doing some minor leage drag racing, I have taken a piped and jetted DS so what the heck right? My question, what mod would give me the most gain, a slip-on muffler or a 12 tooth front sprocket? As far as the muffler goes, I am looking toward the HMF unit.

Thanks Raptor power hungry guys!

03 black and red Raptor
modded stock airbox and muffler
no reverse limiter
PRM Desert Grab Bar

 

I would go with both the sprocket is cheap.

 

you can get a front for like 7$ at rocky mtn

 

What about the HMF slip-on muffler? Looks like a clean unit with good power gains. My buddy just put one on his Predator. Looks nice and sounds way sweet. Who has one and do you like it?

03 black and red Raptor
modded stock airbox and muffler
no reverse limiter
PRM Desert Grab Bar

 

I've got hte HMF full system and love it.