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Portland_650R

Cheap exhaust mods for XR650R

7 posts in this topic

Lacking the $300 or so for a fancy exhaust system, I drilled out the exhaust tip. Things were a bit LOUD - so I stopped at the grocery store for a couple packs of stainless steel scrubbers. I have been playing with them a bit - settled on two of them, in the last bit of the pipe, toward the back - and believe I have it dialed in nicely - WOT in 1st and 2nd will lift the front all by itself. Fun to play with anyway.

:) happy trails

Mac

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On my stock exhaust , I completely hollowed it out. Just took the 3 bolts off, slid everything out, and chopped it off. Only thing left was the stainless tip on the end of the muffler. I ran it like this for quite a while. But, it was pretty loud, not to mention it wasn't s/a legal.

Then I got a spark arrestor screen for a White Bros. R4 muffler, and welded it on the inside of the stainless tip. Loud? Yes, but no more than an aftermarket pipe. Only cost me $15 for a free flowing exhaust. Worked great until the screen blew apart!

See, I used a gas welder to do the job, and I'm sure that the flame made the screen brittle. I think it would have been fine if I'd have used a MIG welder instead.

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Buy the high preformance insert from the dealer. My insert came with my bike so I don't know how much.

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My stainless-steel brillo pads cost $2.67. I guess I wore the hole saw a bit cutting part of the baffle off (leaving the screen).

I started with 4 brillo pads... too congested - two, in the last part of the pipe (there are two compartments) seemed to be a nice balance of noise and power.

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I installed the HRC tip with great results. It improves power everywhere, but is 1/3 the cost and somewhat quieter than most aftermarket systems. www.servicehonda.com has it for $101. Part # 18317-MBN-640

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Originally posted by jaybert600:

... www.servicehonda.com has it for $101. Part # 18317-MBN-640

Ron Ayers Motorsports has this part number for $96.28, saving you a bit more money. I've bought plenty from Service Honda , but I've never bought anything from Ron Ayers. Dont' forget to find out shipping costs as some vendors charge more than others.

Just click on the link "Part # Search" on the left menu to check prices at Ron Ayers Motorsports. Here's the link: www.ronayers.com

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