Question about 2008 Gas Gas EC 450 FSR

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Exhausts Do you American guys get the same black muffler on your bikes as ours in Australia? We get a removeable baffle with ours but its not fitted upon delivery. If not what do you have? What I'm trying to get at is

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Has anyone tried playing around with different size baffles on these bikes? I'd like to take some of the sting out of the bottom-end in some situations (tight singletrack) and I think a baffle might be the best/easiest way.Same muffler. If you choke it up with the baffles it will smooth it out some but not alot on the bottom mostly the topend.,,

Posted on Nov 10, 2008


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1 Answer

How to remove baffles

Step 1 - Remove Exhaust Remove the whole exhaust from the bike.
Step 2 - Drill Out the Baffle With a ½" hole saw and a handheld drill, insert them into a hole in the exhaust's outlet. The handheld drill will not go further inside the exhaust once you hit the baffle. Drill through the 1st baffle and then each remaining baffle until they are are drilled. Remove the baffle pieces.
Step 3 - Replace Exhaust Reinstall back the exhaust system onto your bike.

Jul 12, 2015 | Motorcycles

1 Answer

There is a loud metallic rattle/clacking noise coming from my exhaust after the bikes engine is hot, basically after riding for 15-30 mins when I crack the throttle at a complete stop in gear or in...

Sounds like the baffle is loose inside the muffler and when it heats up and expands you get movement. I would remove muffler when its cool and try to shake it and inspect it closer. May need a new muffler.

Sep 08, 2013 | Motorcycles

1 Answer

I have a 2006 Royal Star Tour Deluxe with a 1300 V4 engine.I would like to know if the existing stock mufflers have any kind of removable baffles or anything that could be removed to effect the sound of...

loud sound is attractive to only the rider and will attract the ire of the neighbours and the law
another point , if the manufacturers thought that a modified muffler was good for the engine , the loud mufflers would be already fitted but as the design of the mufflers also includes economy and engine life that means that a balance of economy , engine reliability and noise is struck in the factory

Jul 08, 2017 | 2006 Yamaha Royal Star Tour Deluxe

1 Answer

Need to replace muffler on 2004 buell blast

If it is a stock muffler then buy another stock muffler and put it on - they are ALL the same. Buell never changed the exhaust on the blast at all. If it is aftermarket(vance and hines) than you need to measure the pipe and find something that fits.

Mar 03, 2013 | 2004 Buell Blast

2 Answers

Is it bad for the exhaust system if the muffler is removed?? And does it have to be removed by a specialist??

Removing the muffler will not hurt the exhaust system, however it changes the air flow through the engine and will cause it to be lean and stumble on acceleration. As far as who can remove it, you can if you are mechanically inclined and have a good set of hand tools.

May 10, 2011 | 2008 Yamaha YZF-R125

1 Answer

Will taking the baffles out of my 2007 Harley Davidson Sportster effect the engines performance any?

A motorcycle engine is a finely tuned system. If you change anything on the system it will effect everything else in the system. For instance, if you remove the baffles from your mufflers, it may cause the engine to run lean. You may have to rejet the carb if you do this. You might want to check you state laws as well. In some states (or countries) if you remove the baffles it's against the law. Personally, I'd much rather replace the original mufflers with a set of high performance "slip on" mufflers. The engine needs a little backpressure to run correctly. If you remove the baffles, you may not have enough backpressure on the exhaust system and this can cause a "dead spot" around 55 to 60 mph. The bike's throttle response will be less than normal.

Good Luck

Apr 10, 2011 | Harley Davidson XL 1200 C Sportster Custom...

1 Answer

I have a new 2010 wide glide i whount to remove baffles on stock pipes will this hurt bike? or due i have to change complet exhaust and intake?

Any change or modification to any of your vehicles systems can effect your bikes factory warranty! Removing the baffles from the existing mufflers is possible with the proper tools but I think that the internal catalytic converters will prevent this. Changing the entire exhaust or just the mufflers should require the addition of a electronic "fueler" to ensure optimum operation as your bike is delivered to the showroom from H-D running lean thanks to the EPA. For the DIYer I suggest looking at for exhaust options and accessories.

Oct 21, 2010 | Harley Davidson FXDWG Dyna Wide Glide...

3 Answers

How to make the bike sound louder

Aftermarket exhaust systems are available which will have more flow through and are louder.

However, I always love the sound of a stock exhaust.

Jul 08, 2010 | 2005 kawasaki VN 800 Vulcan Classic

1 Answer

Where do I find an exhaust system for a 1976 GT-380?

Rist00, hope you didn't click any of kkpp4's links. Looks like malware to me.

Anyway, you've got one of the tougher problems a GT-380 owner or restorer is going to encounter.

The exhaust system, specifically the frame tab for the passenger pegs was extended in what I think was about halfway through the production run. Low enough VIN and the 75 system fits. Higher VIN and it won't. The change in the frame tab required changing the rear mounting of the mufflers.

This one really baffled me because the Japanese simply do not go through the expense of retooling without a darned good reason to do so. In this case there was some retooling for assembling the frame but, more surprisingly, expensive retooling for the comparatively inexpensive exhaust system. And I can't tell that the passenger, which this bike was just barely gutsy enough to handle long enough for a difference to matter, got any benefit.

What you need to do is measure either of your outer pipes from the rearmost part where it mounts to the engine and to the bold on the muffler that goes to the frame or hole in it where the footpeg goes through. Off the top of my head, I don't remember which it uses.

When checking out a system on eBay, ask the seller for this measurement or at least the VIN of the bike the system came from.

When I restored a 76 GT380, I bought a parts bike for it and a loose exhaust system.

Neither fit. The parts bike was a 75, so I knew my problem was my bike was built after the changeover.

So if you find a VIN real close to yours (month of manufacture would help, too), chances are good the system will fit. But the only way to be sure is the measurement I mentioned.

If you measure yours and email the dimensions to me at, I'll measure the spares I've still got and we'll figure out something if we've got a match. Though I suspect you've tried ones and found they don't fit, so likely have an after-change bike, and as you know, the model was discontinued months later, making this a rare part.

Two other helpful bits if you haven't encountered them or for the benefit of other readers.

1. Baffles: Soak the heck out of the threaded part of the retaining bolt with an aggressive penetrating oil. I'm a WD40 guy, but for stuff like this, PB is the only game in town, IMO. You do NOT want to break these bolts. You should also generously spray where the baffle fits into the muffler. The friction fit here because of rust can be a show-stopper. Though it sounds awesome, don't run without properly packed baffles. Without changing main jets, you'll be dangerously lean and holing pistons, to the joy of your annoyed neighbors.

2. A local salvage yard that has more Suzuki GT bikes than anything else seemed to be a goldmine but the bikes were all outside and all hard wheels removed. So they're sitting on the ground right on the exhaust. I found a bike with a beautiful set of chrome expansion chambers, tipped it over, and there was nothing left of them from sitting on the ground.

Good like on what I assume is a restoration project. This is a terribly fun bike.

I got most of the way through mine and sold it to a friend of a friend who made an amazing cafe bike with it.

If this is part of a GT collection you're putting together, you might want to contact me on that, as well. I've got a sweet 76 GT-185 which has become the unobtainable bike of the series.

Good luck,


Feb 05, 2010 | 1976 Suzuki GT 380

2 Answers

Loss of power with new exhaust

You didn't say if the new exhaust was the factory stock unit for your bike or an aftermarket pipe. The aftermarket pipes are generally not well manufactured. The factory pipes are well made but even they have internal flaws at times.

The flow of exhaust gasses is being held back by the baffles in the muffler. Some mufflers have an end baffle that can be removed from the end of the pipe. If one is present, remove it. This may help. Aside from that, return the new pipe and ask for a refund or replacement.

Apr 17, 2009 | 2006 Gilera Runner VX 125

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