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Thread: GPR thunder slash exhaust decibel comparison to stock exhaust

  1. #1
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    GPR thunder slash exhaust decibel comparison to stock exhaust

    Does anyone know what the decibel difference is between the GPR Thunder slash exhaust vs. the stock exhaust for a 2012 RSV4? Also, what are the decibel numbers for the stock exhaust?

  2. #2
    apriliaforum expert fastmike's Avatar
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    WNFO!!!

    I'd say the stock is fairly loud, and the GPR is really loud!!

    Did you do a search?? I think I've seen that on here somewhere before.

  3. #3
    apriliaforum Member duff_boy's Avatar
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    GPR thunder looks really loud. Read - a very harsh, raspy sound to it too. I've seen a couple of videos of it on youtube, sounds very similar to when i started my bike up with no muffler on it. After all, the GPR thunder has little to no muffling properties!
    2011 RSV4R aPRC White
    2009 Triumph 675 Daytona Black

  4. #4
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    Yeah, I knew it was loud but I was just curious if anyone knew around what decibel it is. The videos I've seen make it sound good, but you can never tell exactly how loud it is from a video.

  5. #5
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    Quote Originally Posted by k9fritz View Post
    Yeah, I knew it was loud but I was just curious if anyone knew around what decibel it is. The videos I've seen make it sound good, but you can never tell exactly how loud it is from a video.
    try contacting GPR?

  6. #6
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    The GPR's do come with removable baffles that seem to do little in quieting it down. I know that it will sound different in person, but compared with the other exhaust systems on youtube, it sounds far too blatty and raspy to me. The RSV4 is one melodious engine, even when choked by the stock exhaust, and deserves an equally great exhaust system to get that wonderful "basso profundo" when uncorked.

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