[moodyd13]

Im goin 2 get some stuff for my new 07 400ex when i sell my dirt bike and was wondering which slip on exhaust to get. My brother said lrd or dr. D. And i will be getting a jet kit with it. I will be riding on tracks and trail riding.

 

[Redracer]

Sparks makes one of the best pipes for the 400EX. FMF is good. HMF just released their 2010 Comp Series. It is amazing, I did a full review for them.

HMF Racing / News / TEST: Competition Exhaust

 

[Billy250X]

I agree^^^^!!!Hmf or curtis sparks.

 

[moodyd13]

Where on the internet can I get a Curtis Sparks Slip on for it then??
All I can find is the whole exhaust system