Velocity Stacks 05 GSX-R 600
 

Hey i heard that only using 2 of the Factory Pro velocity stacks is better than using all four that they give you. Any truth to this statement??

Yea, you use the 2 longer ones. I'm not a 100% if they go on the outside two or the inner two though.

I think they go on the inner.

thanks! i used all of them...slight modification involved with the install but all-in-all they were pretty easy to install and definitely noticed power and air flow improvements.