YZ450 Slip-On Exhuast

Looking for a slip-on exhaust for my 07 YZ450. Does anyone know if the '06 and '07 are the same? Couple brands I have checked show a different part number. Not sure if it is the mounting arrangement or how it is matched to the engine performance. Have to have a spark arrestor and not much increase in noise.

The issue is head pipe diameter at the mid pipe joint.

Thanks grayracer513, I'm checking out a PMB end cap with a screen now. One drawback is they may not be stamped USFS Approved. Found one on the TT Store for a WR not sure if it will fit the YZ, expecting an email from the store soon.

This will get me by until I can get a deal on a slip on.

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