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If i do this, will I need to mod the silencer at all or can I just ride as is?
Also, what are the advantages and disadvantages in doing this?
(I just want the shorty silencer look)

Advantages? None. Disadvantages? A perfectly good silencer ruined, and a lot more noise to piss people off and make our sport look bad. By all means, proceed.

What are the possibilities of cutting the pipe that leads up to the silencer?
This would move the silencer forward...giving you the look you want without sacrificing the function of it

Found this on ebay. Kinda rough but appears to be short.

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... IT&vxp=mtr

Pro Circuit makes a shorter silencer with out a spark arrestor. I bought a PC spark arrestor off ebay cheap, but ended up putting the stocker back on mainly because it doesn't melt my turn signal. The only advantage to aftermarket silencers are a slight weight savings IMO.

Having done this, I can tell you that you will lose the spark arrestor, and the max power will be moved sightly lower in the RPM range. 125 MX bikes often run shorty mufflers on shorter tracks, for slightly quicker corner to corner bursts of speed. A longer stinger/muffler will lengthen the top end delivery.

I have both a long and shorty silencer for my RM 125. I've tried both a few times back to back, and didn't notice any difference in power or sound volume. It sounds a little different, but it's no louder.

There is a difference though between a "shorty" silencer, and cutting a silencer.

The E series silencer could be cut down and retain the spark arrestor but we're talking about an H series here, right? I don't think I would actually do it but who knows, maybe I will just for the hell of it! It would be fun to see what difference it makes in power and sound levels.

someone on dirtflamer did it a while back. His assessment was that it made little to no noticeable power difference, but he thought the louder sound was "cool".

pfft.


J.

When I did my hybrid, I couldn't find a 02 KX 250 silencer so I had to modify my forest approved FMF one. I had to cut about 1.5-2 inches.
Can't say it's any louder or that I gain/lost anything in power, hard to tell for sure since the pipe was lengthened about 1 inch to reach the cylinder...

So could I just do what Diymirage said and cut the pipe leading up to the silencer so it will still be the full silencer?

Well, you have an angled silencer, right? It is short of shaped to fit the subframe. How's it going to fit if you move it forward?

So could I just do what Diymirage said and cut the pipe leading up to the silencer so it will still be the full silencer?

I doubt it.
The silencer fits in a bulge under the side panel plastic, the curve in the pipe leading into the silencer just clears the airbox, and the mounting tabs on the silencer have to line up with mounting points on the frame and subframe.

Shortening the stock silencer for an appearence issue alone seems like a lot of trouble.

I once had a girlfriend who wasn't very pretty.There were some other things about her that made her a keeper.......

You could always buy another silencer and cut IT up.

you'd have to weld new mounting tab and custom fab a tube from the pipe to the silencer...and unless you've got a welder can be very tricky and expensive.
You'd also have to make sure the relocated pipe is not gonna hit the swingarm when fully compressed...
Just for the look ain't worth it.

Hey juliend, tell us how you really feel, don't sugar coat it.