I tried a little 2.5" flex pipe for a front and rear snorkel. Worked like a charm. I also used some precharger material from a old K & N filter to cover each end. It seems to work great. That precharger material lets air go through but no dust or water. Has anyone else used this material on their quads? We also use it on our sleds in the winter and it works great to keep the snow/water out of the air intake.