Silencer vs Spark arrester
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Silencer vs Spark arrester
What is the main difference between a silencer and a spark arrester? Is there any advantage to one or the other? Where I ride I don't think any laws are enforced. The bike in question is a 99 KDX220 soon to be with a Pro Circuit pipe.
Ryan Z
1999 KDX220
FMF Gnarly Desert
Boyesen 607's
Air Box Mod with No Toil Filter
12 tooth front sprocket
Jimmy Button Bars
Tusk Bark Busters
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Maier MX fender
1999 KDX220
FMF Gnarly Desert
Boyesen 607's
Air Box Mod with No Toil Filter
12 tooth front sprocket
Jimmy Button Bars
Tusk Bark Busters
.42 kg Racetech springs
Maier MX fender
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The main differenc is a screen or baffle placed in the exhaust path that is meant to keep glowing embers of carbon from leaving the pipe and setting the woods on fire. IMO, I think this is an extremely unlikely event on 2-strokes and really unlikely on the KDX. The exhaust is just too cold.
It doesn't matter what anyone thinks if you go to a riding area that requires a SA on all bikes and you don't have one. I'm not aware of any advantage of one over the other. The race series I go to now and then requires them, so I got one, but I have noticed that when we are all lined up in the woods the race official guy with the piece of coat hanger wire is only looking at the 4-strokes.
Performance wise you won't gain a much over the stock SA, except weight loss.
It doesn't matter what anyone thinks if you go to a riding area that requires a SA on all bikes and you don't have one. I'm not aware of any advantage of one over the other. The race series I go to now and then requires them, so I got one, but I have noticed that when we are all lined up in the woods the race official guy with the piece of coat hanger wire is only looking at the 4-strokes.
Performance wise you won't gain a much over the stock SA, except weight loss.
'08 KTM200xc
'99 CR/KDX Hybrid with that RB stuff done to it
KX100 for the boy
'99 CR/KDX Hybrid with that RB stuff done to it
KX100 for the boy
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Silencers with spark arrestors are generally a little bit longer than just a silencer. I had an FMF silencer/spark arrestor on my '96 KDX, and I cut the spark arrestor off for a "shorty" style silencer. Noise levels did not increase at all, from what I could tell, but the power felt like it hit a little sooner and had a slightly healthier mid range (which was what I was after at the time).
Spark arrestors are generally required in any state or federal forests, though (they keep flames from shooting uncontrollably out of your pipe)
Spark arrestors are generally required in any state or federal forests, though (they keep flames from shooting uncontrollably out of your pipe)
2004 Dual Sported KDX200
1999 Ninja 250 (Daughter's)
1996 DR 650 (stock, mostly street use)
1999 Ninja 250 (Daughter's)
1996 DR 650 (stock, mostly street use)
- Indawoods
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If you ride woods.... you should always have a Spark Arrestor on your bike period.
If you cause a fire by thinking it is stupid to ride without a spark arrested exhaust.... you not only lose yet another riding area for yourself and others but could cause human and animal loss.
If you cause a fire by thinking it is stupid to ride without a spark arrested exhaust.... you not only lose yet another riding area for yourself and others but could cause human and animal loss.
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"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
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And if you get caught, you can be charged the bill for fighting that fire
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- bcdonyo
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+1, I think the odds of a properly running, non arrested two cycle starting a fire are pretty nil. But, the law is the law, and they only weigh slightly more and lower perfomance marginally, so I always run them.KarlP wrote:The main differenc is a screen or baffle placed in the exhaust path that is meant to keep glowing embers of carbon from leaving the pipe and setting the woods on fire. IMO, I think this is an extremely unlikely event on 2-strokes and really unlikely on the KDX. The exhaust is just too cold.
It doesn't matter what anyone thinks if you go to a riding area that requires a SA on all bikes and you don't have one. I'm not aware of any advantage of one over the other. The race series I go to now and then requires them, so I got one, but I have noticed that when we are all lined up in the woods the race official guy with the piece of coat hanger wire is only looking at the 4-strokes.
Performance wise you won't gain a much over the stock SA, except weight loss.
I once got a verbal warning from a ranger/BLM guy at Dumont dunes for not having spark arrestors on my Banshee. He got pissed when I asked him about the fire hazard in SAND DUNES.
Then when I pointed out that virtually none of the sand cars and gas golf carts running around had them, he said it didn't matter, the law only applies to bikes and atvs.
I ride in the desert mostly, no fire hazard. I like to run a SA though because I do occasionally ride in areas that require them. It's better to just run one so you dial in your in jetting and do not have to change it if you choose to ride in an area where they're required.
Last edited by bcdonyo on 01:44 pm Nov 24 2009, edited 1 time in total.
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- canyncarvr
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I've seen far more sparks come off foot pegs, toe clips, and chains than I have exhaust. The former don't carry much heat at all...the latter would.
Probably mostly due to their intended application, silencers always seem louder to me than a S/A. That's reason enough to choose an arrester, seems to me.
Dipped-chits that think loud is somehow impressive (not to mention their bikes are surely at least 10HP better'n anyone elses S/A'd bike!!) are morons.
To be a real man..you have to run your FmF shorty silencer at least a dozen times up and down the staging area (preferably with either the back tire spitting dust and gravel OR riding a wheelie) before you take off to pollute the rest of the woods on your day-long 10-mile trail ride.
If you happen to be a female rider...you're aspiring to be the same thing. No different.
Probably mostly due to their intended application, silencers always seem louder to me than a S/A. That's reason enough to choose an arrester, seems to me.
Dipped-chits that think loud is somehow impressive (not to mention their bikes are surely at least 10HP better'n anyone elses S/A'd bike!!) are morons.
To be a real man..you have to run your FmF shorty silencer at least a dozen times up and down the staging area (preferably with either the back tire spitting dust and gravel OR riding a wheelie) before you take off to pollute the rest of the woods on your day-long 10-mile trail ride.
If you happen to be a female rider...you're aspiring to be the same thing. No different.
Consider the source
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I want to throw a cro-bar into the front rim of those guys! They rip through the parking lot, chucking rocks at everyone's trucks. Dumb@sses! The trail head is right there!!!! Get in an ride yourself into a tree. Do I sound angry?canyncarvr wrote:I've seen far more sparks come off foot pegs, toe clips, and chains than I have exhaust. The former don't carry much heat at all...the latter would.
Probably mostly due to their intended application, silencers always seem louder to me than a S/A. That's reason enough to choose an arrester, seems to me.
Dipped-chits that think loud is somehow impressive (not to mention their bikes are surely at least 10HP better'n anyone elses S/A'd bike!!) are morons.
To be a real man..you have to run your FmF shorty silencer at least a dozen times up and down the staging area (preferably with either the back tire spitting dust and gravel OR riding a wheelie) before you take off to pollute the rest of the woods on your day-long 10-mile trail ride.
If you happen to be a female rider...you're aspiring to be the same thing. No different.
Even worse is when they let their kids do it too. Running laps. Drives me nuts. I step out in front of them and tell them to C.T.S!
- bcdonyo
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For your benifit I guess I should have said WHERE I RIDE there isn't a fire hazard.
I've only heard of one "wild fire" near me in the 13 years I've lived here and it was at the sewer ponds in East Vegas, where I've never ridden.
This is about the most dense the vegitation gets where I ride:
There are some places where you don't need a SA:
And some of those places still stupidly require you to have them. Where's the fire hazard here?
Man, thanks for taking my post out of context. Did you read the whole post? My sister owns a cattle ranch up North, so I'm well aware of fire hazards in NV.IdahoCharley wrote:Nevade desert doesn't have wild fires? Sage brush and wild grass fires spread fast.
For your benifit I guess I should have said WHERE I RIDE there isn't a fire hazard.
I've only heard of one "wild fire" near me in the 13 years I've lived here and it was at the sewer ponds in East Vegas, where I've never ridden.
This is about the most dense the vegitation gets where I ride:
There are some places where you don't need a SA:
And some of those places still stupidly require you to have them. Where's the fire hazard here?
- Indawoods
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Well... I don't like swapping out a SA and silencer... I will just stick with the SA... safe everywhere.....
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****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
- bcdonyo
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Pretty much my sentiments exactly! Just run one.bcdonyo wrote:But, the law is the law, and they only weigh slightly more and lower perfomance marginally, so I always run them.
It's better to just run one so you dial in your in jetting and do not have to change it if you choose to ride in an area where they're required.
- canyncarvr
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I recall the question: 'Does that place glow in the dark?'
I don't recall the answer.
Looks like a good place for Arpaio to rent from you Silver State folks to use as a felonial residence.
I don't recall the answer.
Looks like a good place for Arpaio to rent from you Silver State folks to use as a felonial residence.
Consider the source
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IMO...keep it loud N Proud!!!!!! But as far as spark Arestors are concerned,ive seen more sparks off my own boots on pavement, harleys running WAY to lean and my old 1980's XT 250 with no Muffler at all in the bush (true story and it was a chaore to get the B*tCH home) anyhow if your in the desert and by way i saw your pix, its looks AMAZING!!!!! You should be fine... Geta loud pipe so long as it dont annoy anyone and ROCK ON!!!!
Live to Ride, Ride to live!!!