[Vicious19D]

Alright guys so I scored a Yoshimura muffler from a buddy for really cheap, he sold his crotch rocket that it was for and sold the muffler to me for super cheap. $75.00! So I got her on tonight with very minimal fabrication and to my dismay it sounded awesome but was incredibly loud. I have 60% hearing loss in my left ear and it was so loud that it made my left ear drum tingle. She sounded like a Harley running straight pipes with no mufflers. If I was racing it I would probably go with this setup, however I do a lot of trail riding and having it be that loud would be obnoxious and probably get me a ticket. i slipped her off and put my factory setup back on. Anyone out there who is running an aftermarket muffler i could use some input from you. What muffler are you using and how loud is it. I talked to a guy at my CFMoto dealer and he said on his old Z600 he took the factory muffler and drilled out the exit to a 2inch and then drilled out the other end of the muffler and then welded a 2inch elbow in it as well. essentially making a dual exit single muffler. Anyone else done anything like this? I would like my 800 to have a little more lumpy sound to her but not be crazy loud like my setup today was. I'm going to hang onto the Yoshi incase i decided to do the competitive trail racing this summer. I could feel the torque increase as well as top end but when she sounds like Satan's Shovelhead Harley i just cant do it for everyday riding lol! Any input would be appreciated guys!

[NMKawierider]

Sound is always the problem. I watched videos of people with the 2-brothers exhaust on theirs and it sounded way too loud and the fact that I would need a programmer took it off the table. That's when I did my stock muffler mod which even with the spark arrester took it to the edge of needed a programmer. The sound was OK, but like you, I have about 40% hearing loss in my left ear and after a few hours of riding I get that sensation in it...but I also have a Benz silencer I can put on that works well..except I hate hearing all that drive train noise. I have sense had a chance to ride with a guy with a 2-Brothers exhaust and it really wasn't all that loud after all...but it would still be too loud for my wife.

IDK, need more options.

[chuddly]

I dont know what you did to make the Yosh so loud but I just did a custom Yosh exhaust on mine and its still on there and sounds great.  Here is a video I did of the comparison between stock and the Yosh.  Was yours louder than this?

[Hrc630]

I have the two brothers and yes its to loud for trail riding. I have buy a noise reducer for it that drop the sound by 7-9 dB .
As soon as I try it I will let you know the result

[swarzeneg]

I have the two brothers and yes its to loud for trail riding. I have buy a noise reducer for it that drop the sound by 7-9 dB .
As soon as I try it I will let you know the result

If I understand in my case just remove the extinguishing sparks. And I have a bigger problem with the original filter passing dirt to the butterfly body. And that the foam filter I have it with oil.

[Vicious19D]

I dont know what you did to make the Yosh so loud but I just did a custom Yosh exhaust on mine and its still on there and sounds great.  Here is a video I did of the comparison between stock and the Yosh.  Was yours louder than this?

I wish mine sounded like yours! I'm using a yoshi short muffler with a straight through design. I shoulda known it was gonna be loud as hell. I've ordered a small magnaflow from work and I'm going to run it instead. I'll post some videos when I get her installed.

[Hrc630]

The trouble with the stock filter is also caused by the poor design of the airbox. The "fresh air" are not Fresh...

[Hrc630]

The sound is nice, its softer than the Two Brothers

[chuddly]

Mine is a Yoshimura TRS3 from a mid 2000's GSXR.  I love the sound and its not to loud at all.  it is also a straight through design.  Mine mounts right where the original muffler was so its got some bends but that probably helps with the sound some also.