hmf full or slip on???

[raptorrider314]

I am pretty sure i wanna get the hmf exhaust. Should i got with the full system or just teh slip on? If i go with teh full system how much better and louder will it be??

[limited05]

a lot bett er and louder. get the full its not that much more u can find them for like 410.

[MTCyfz450]

i have an 04 yfz and i got the full HMF bill ballance carbon pro, with proper jetting it made an amzing difference, HMF is a good choice, and as far af full or slip on my friend has a slip on HMF, intake cam, and jetting i blow him away with just the full exhaust.