Muzzlemaggot and I have been corresponding in the background about mufflers for the Fox .15X.

The Fox .15X shown on the Lower plane in the pic I posted awhile back. That particular muffler is a flow-thru type held by screws above and below the exhaust stack.

Here are a couple more of the standard Fox type. These are the same except the earlier one is held by screws above and below the stack and the newer one can be held by the upper and lower screws OR the the ears on the last iteration of Fox .15X that I have. All three mufflers were Fox and came in a plastic bag with the Fox logo. The one with ears came with both screw sizes so it could be mounted either way. It appeared to be exactly the same as the other one except additional metal had been added.

Also shown are three iterations of Fox .15X. One has no muffler provisions, one has over and under the exhaust stack, and the third shows over/under as well as the ears.

Here's the wrinkle...Fox keeps telling Muzzlemaggot that they never made mufflers for the .15X. My GUESS is that those folks at Fox are thinking about the Steelfin .15.