i was wondering if ne1 had any info on what up with velocity stacks sum people on here say dont mess with them but i just ran into this website..... seeing whatelse every1 has heard new if neone has done this mod??? thanks guys

http://www.factorypro.com/Prod_Pages/prodk37.html

 

Short stacks = Top-endpower. Long Stacks = Low to midrange torquepower. We gained 1 WOT (Wide Open Throttle)HP by going to the short stacks. For the street I recommend the longer stock stacks. Too bad they aren't variable like the yamaha R6 & R1 stacks.