Mitzie's Honda VTX1300R Motor Trike with the stock/as provided twin mufflers, has always had a very annoying "backfire issue" going down mountain grades and any remotely abrupt roll off the throttle. The sound is fairly loud also. I cured this 100% with a set of Fiberglass Packed Baffles (Part # 1524) from Parts Unlimited. These are actually manufactured/marketed by Cycle Shack, Inc. They are 1-3/4" size, and fit correctly in the Motor Trike provided mufflers. I've had several PMs about this annoying problem, so decided to post this thread after extensive testing.<br />
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These provided a deep, mellower exhaust note, and the Trike has NEVER backfired since under any conditions. We rode the Mountains and a lot of "Country Twisties" yesterday afternoon...CURED...!!!<br />
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Installation is very simple, requiring only a couple of 7/16" wrenches and a Drill with a 1/4" bit. Wrap "ALL" of the provided packing around the Baffles. Slide Them into the Mufflers with the open side of the perforations toward the engine and the closed side facing out. HINT: If You're having a hard time getting Them to slide in, wet the Fiberglass Packing and press it down.
The Hot Exhaust will dry and fluff it back out in a minute of idling. Next drill a 1/4" hole through the muffler and baffle. Keep this hole close to the tip of the muffler, as in maybe a 1/2" from the opening to simlify bolt installation. Next push the Included Bolts through the hole from the inside of the Muffler to the outside, and tightening the Provided Locknuts (yes, they are locknuts...they look like standards, but notice the tiny rectangular crimps/they won't vibrate off)......Your Neighbors and Their Dogs will Thank You, and No More Cannon-Sounding Backfiring...I purchased These at Our Local Honda Dealer, and depending on Your "Friendship With Your Dealer Status", should be purchased in the $30 to $40 Range for a Pair (They are sold seperately). When I get a chance, I'll take and post a Pic...I hope this Helped some of You.....<img src="images/smilies/thumbup.gif" border="0" alt="" title="" class="inlineimg" />