With a new Baja trip upcoming I brought the rig in to a reputable shop close to me and the compression was low (below 110 in both cylinders) wet and dry tested. Dust was the culprit, mechanic confirmed and a new top end and preventative internal parts replaced (timing chain ect…).
I asked what the heck I could do to keep the new dust out of my engine so I can preserve my investment. The result? Stock air filter and the S&B particle separator.
Just got back from 10 days in Baja and it was dusty. Over 800 miles and I checked the filter 2 times during the trip. The S&B particle separator worked and I found NO VISIBLE DUST on the filter at each check. My riding buddies brought out their air tanks and blew out clouds of dust off of their stock filters (rzr 1000’s and another xp900, and 800s). You would not want to be down wind from that operation, believe me!