Thruxton R Meerkat X-pipe and Cone Shorties = LOUD - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 21 (permalink) Old 05-14-2017, 11:30 AM Thread Starter
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Thruxton R Meerkat X-pipe and Cone Shorties = LOUD

Recently installed a Meerkat X-pipe decat with stock pipes and loves the deeper sound vs stock, however felt I would like it a little bit louder, maybe 25% louder.

So I bought and fitted a Cone Engineering "shorty" slipon and WOW -- they are LOUD! Like 200% louder. And this is with a full face helmet and earplugs. Before I simply go back to stock, I wanted to see if anyone had thoughts on another aftermarket slip-on that might be a "little" bit louder than stock but not by much, but much quieter than the Shorties.

P.S. if anyone in the US is looking for a set of like-new Cone Shorties, let me know. I will sell for a 25% discount off new price with free shipping. I just fitted them yesterday.
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post #2 of 21 (permalink) Old 05-14-2017, 12:16 PM
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Buddy has the x pipe ( we just installed in his and my bike) I have stock muffler ( for now) and he already has the Cone shorties. As he rode away the other day indeed it is Really loud. Thinking little too loud for my tastes. I'm now looking at the British Customs GP pipe. I really like the unusual style. I just want to hear a clip before going that way. Let's hear what you go to.

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post #3 of 21 (permalink) Old 05-14-2017, 01:36 PM
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Love my cone shorty's ,kept the cat not wanting to upset the delicate balance of tune, keep the shorty's and remount your cat. you.ll love it Louder but not to loud with just a hint of crackle pop on aggressive deceleration .
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post #4 of 21 (permalink) Old 05-14-2017, 02:04 PM
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Just got an x pipe fitted, and am completely in love with the tone I'm getting from my Vance & Hines slip-ons. The V&H's come with silencers that you can pull if you feel it's not loud enough. More noteworthy than the volume however, are the beautiful growl the bike makes accelerating—and the primordial burble you get when rolling off the power. It's fantastic without being too obnoxious. Here's a video someone made of this exact config:


Also, Captain Rambunctious has an in-depth video review of (freespirits)x pipe+V&H:

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post #5 of 21 (permalink) Old 05-14-2017, 02:40 PM
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Go the meerkat slipons. Sound, fit and finish are awesome

https://youtu.be/zl0x2EOFcHw

https://youtu.be/g90qIxvo-lU

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post #6 of 21 (permalink) Old 05-14-2017, 06:03 PM
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Remus makes a set of slip ons that look and sound great and have the ability to add or delete the silencer. Another option for you to consider. You might check these out. Agree, the V&H are a great way to go but they are expensive. I have the British Customs Predator Pro on my R but I chose to leave the stock cat in place. Love the sound they make. Figured it would be too loud if I put an x-pipe on it and pop too much on decel.

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post #7 of 21 (permalink) Old 05-14-2017, 08:41 PM
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I've got the cone shorties with the stock cat and I feel it's too loud. I'd feel embarrassed to ride it any louder!
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post #8 of 21 (permalink) Old 05-14-2017, 09:57 PM
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I considered the Cone shorties before I got the Meerkats, and my only concern was their megaphone shaped liner. No matter what you do, if you have a megaphone shape you're going to get sh*t-loads of volume straight out the back. That doesn't necessarily mean nice noise, it just means more noise.

If you're going short muffler I'd make sure it has similar size outlet to intake. I love the look of the Cone system, but I can imagine they will do very little muffling with that ratio.

It makes no difference to the power, and while you probably want the extra volume on a bike with a cat fitted, without the cat it will be pretty harsh.
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post #9 of 21 (permalink) Old 05-14-2017, 11:15 PM
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I am surprised the shorties are that much louder than their Dominator slip ons .
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post #10 of 21 (permalink) Old 05-14-2017, 11:47 PM
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Really? One is about 80% longer than the other
All of the 'muffling' on a straight-through muffler comes from the gas' compression waves expanding within the muffler housing. The holes allow that expansion, and the fibre-glass inside absorbs it like a sponge.
Even the profile of the muffler has an effect, with oval ones being more effective because they flex more. Even the size of the holes in the internal tube have a large impact on the effectiveness.

A short muffler needs to be carefully designed to avoid being ineffective, and that's where we sometimes see aesthetics being chosen over practicality. Remus pipes are similar, where they are mid-length but have gone for a slender look, which means less absorption, so I personally find them loud and tinny if you use them with a decat, although they sound fine with the cat fitted, which is how they were designed to work.

Making mufflers is like making a musical instrument. Something that looks awesome might sound terrible, and getting someone to design a solution for your needs means either finding a manufacturer who makes a muffler specifically for your setup, or finding someone who will make one specifically to suit your setup. My Meerkat was designed specifically to go with the cross-pipe, and during the discussions Peter warned me it would be louder if it was that short, but that he would design it as best he could to not be too loud. That's exactly how they came out, with a non-harsh note that is louder than stock but not at all tinny.
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