Hmmm. You must have a A. Cat. The chain case on my Polaris is square. Similar in design, but square is much more effective. It's what all the mfg's will be running within the next 3-5 yrs. Mark my words!
While we are talken chain cases i am a fixin to change the erl in mine whats bestest to put back in er ? I dont like the stuff thats in er it stinks real bad.