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Portmod7

Pro Moto Billet Spark Arrestor

13 posts in this topic

I posted in another place on this website, thought I might try here also.

I have a brand new '07 YZ450 and I want to do a hare scramble race in two weeks. My hangup is that we are required to run a spark arrestor and I don't have enough cash to put an exhaust system on my bike. I was wondering if anybody has tried the Pro Moto Billet Spark Arrestor kit yet, and if it helped or hurt performance? It looks like a nice piece, but I don't want to spend $130 that i could be saving to get a new exhaust if it's just going to hurt the performance of the bike....

Thanks for the help!

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Makes no difference over stock. I've got it on my 06'. My bike still won't pass the sound test but your 07 might.

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I have one on my 06 as well, and I think it smoothed the power a little bit. It works and looks good, but I'm going to switch to a Dr. D system this year and probably sell the PMB unit.

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I don't know about the sound test, but the dealer I bought mine at said it was not quite as loud, I can't tell a difference. The power seems to be the same if not a little better.

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I have one on my 06 450 and it works great as far as the sparky is concerned. No difference in power output that I could notice. I don't know about the sound test and I have an ISDE style race in a couple weeks and I have to meet the 96db test. I bought the silent insert as well with my PMB Sparky so I hope I can get to the magic 96db level....I will be supprised if I do.

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I've got one on my '07. No issues. Easy install with drill and rivet gun.

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I have one on my 07. Easy install. Works fine. I got it with the silent insert that is supposed to pass the 96 db limit. The one time I got sound checked, it blew a 97. They let me race anyway. The bike had only been running a couple of minutes after sitting out on a cool night when it was tested. Anyone know if exhaust noise in the case of sound testing is lower for a warm engine compared to a cold engine?

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I have one on my 06 450 and it works great as far as the sparky is concerned. No difference in power output that I could notice. I don't know about the sound test and I have an ISDE style race in a couple weeks and I have to meet the 96db test. I bought the silent insert as well with my PMB Sparky so I hope I can get to the magic 96db level....I will be supprised if I do.

Are you racing the OughtSix in Cascade?

It looks like a nice piece, but I don't want to spend $130 that i could be saving to get a new exhaust if it's just going to hurt the performance of the bike....

I have a PMB SA and quiet core for my stocker. I couldnt find anything cheaper than that. Like most said on the other post, performance is a wash.

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Anyone else with a 2006 YZ450 test the PMB with the silent insert?

Will it pass the 96db test?

The website says it will lower the output by 3-5 dbs, it doesnt say it will meet the 96db requirements.

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Anyone else with a 2006 YZ450 test the PMB with the silent insert?

Will it pass the 96db test?

The website says it will lower the output by 3-5 dbs, it doesnt say it will meet the 96db requirements.

They told me all of them passed the 96db test. I think it even said it on the package. I havnt tested it myself yet, sorry.

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Thats wierd, I would have sworn it used to say 96db silent inserts on their webpage so I just went and looked and you are right it does just say 3-5 db reduction. It must not have worked as good as they originally said. I am positive it used to say right on the sight.... 96db. Now I am nervous that mine isnt 96db, I better get it checked.

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Anyone else with a 2006 YZ450 test the PMB with the silent insert?

Will it pass the 96db test?

The website says it will lower the output by 3-5 dbs, it doesnt say it will meet the 96db requirements.

Anybody have it tested?

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I've got the PMB insert with spark arrester on my 00 426. Love it. No differance that I can tell in power, and it is much quieter.

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