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View Full Version : Polaris 90 hop-up question?



bmurray
04-08-2006, 04:29 PM
My buddy is in the process of rebuilding hi son's 90. He purchased a Wiseco piston kit, and was wondering if anyone has shaved the head down on one of the quads. I think I can mill off about 0.5mm or .020". Has anyone done this? Any other performance hop-ups we can do outside of purcahsing a pipe and K&N? What it the best pipe for this bike also? Thanks

bigdaddy
04-10-2006, 08:39 AM
We are running a Hetrick pipe on my boys Polaris 90 and It works great. I would call them and tell them what you are looking for and they can set you up. Personally I would stay away from a K&N filter if you value your motor. I would buy a perfofmance head instead of milling the stock head.