exhaust

I can't for the life of me figure out what size bolt belongs in the exhaust mounts (2 per mount, 2 sides). I think I had a few 9/16ths bolts in there, but they didn't seem quite right. Also, are the threads fine or coarse? Thanks in advance.

There are some pipes for sale on Ebay by some guys called BRO'S XS 650 TT EXHAUST. Are these guys a member on here? Im just looking for some reviews on pipes and exhaust for my xs650. Thanks for any help and tips.

This is my 1st XS650 build. Looking to get some opinions on this.......Made my own pipes from a mixture of 1.5" OD bends and stock XS pipes that I have laying around. The pipes are mocked up and at the head, there's still about 8" of that inner tubing still there. So it basicall goes from...

A friend of mine asked me to help him with the installation of MikesXS 2 into 1 exhaust system Part #07-0767 so i decided to make a couple of videos and pics in case someone else wanted to see how it's done. Here is the kit and the muffler, XS Performance Reverse Cone Megaphone Muffler Part...

I was wondering who runs them? I have a 74 and i want to use them with my stock head pipes...my bike isn't close so i can't measure the head pipes right now. will they fit 74 head pipes?

White smoke/oil in exhaust - VIDEO Hi all, I'm getting a pretty good amount of white smoke from my left exhaust. There is also a little oil dripped out of the area where the muffler joins the header pipe. That cylinder is also idling erratically now. This is a new condition, it ran great...

Why in the world is custom exhaust so expensive for the xs 650 on ebay? there sure doesn't look like alot of work to it, but guys are selling simple exhaust designs for over $200 bucks, I mine as well go out and buy a welder and start making my own. Anyone know of a good resource for making a...

Found these today at a local junk store. Does anyone recognize them? 1.5" ID @ the throat. Thanks in advance.

Just want to say hi. i just joined site. I scored two xs 650's this morn going to build modern type tracker. up side down forks wide rims spokes xr tank. pics soon to come. second will be more sedate stock 19 front and back stock forks maybe omar tank olddude13

hey guys, well... i've been a long time snooper and now it seems its time to finally man up and join, feels like the right thing to do and don't i need the help! About a few months ago i picked up a stock 75 xs650b and after enjoying it as is i decide to search for a few parts. Enter the mac 2...

if anyone has a '77-'79 650 in the Cincinnati area I need to see one to help me figure out a couple technical problems I'm having with a '78. would greatly appreciate email or call at 859 391-8736

Hi folks, could you give me your opinion as to how to proceed? My left pipe I was able to lengthen by just adding one section. (2 bands of weld to attach) but the right side pipe has been more difficult and I've had to add 2 shorter lengths, meaning that it had to be welded all around in 3...

The bike has never ran better but I have white smoke coming out of the left muffler when the bike is revved up. Any ideas on whats going on?

Hi,I have a 1974 Xs50.The bike for for racetrack use only.Not for a flat track but for vintage racing and track days.I have the Mikesxs performance system with both headers ends going right below the clutch cover and the short megaphone muffler.The ground clearance is my major problem when I go...

Does anybody who is using the 17" reverse cone shorty mufflers (mine are Emgo, I assume the ones from Mikes will have the same problem) have any tips for how to modify the center stand? I mounted the mufflers on to the stock headers on my '81, but now the foot bracket of the center stand...

I've read the stock headpipes are "double walled". What does this mean as far as the possibilities for cutting them, adding a section, thereby lengthening them? I need to make the section that comes down from engine to frame longer as the stock ones won't clear my footpeg mounts or my brake...

i was thinking of a cheap way to "home-fab" a custom exhaust out of stock pipes and had an idea. i was thinking that once i cut away all the excess pipe that i wont be using, i could put a small bend in the end of the pipe towards the outlet by packing it with sand and applying a bit of heat...

I'm about to place an order for Omar's Mile exhaust. I prefer my exhaust to be on the quiet side. Besides, more and more governments are legislating and enforcing decibel levels. Can anyone who has, or has heard, the Omar Mile's exhaust give me an idea how the decibel level compares to stock ?

This set of pipes came with my bobber project. I'm trying to figure out who made them as the flanges are too big to clamp the pipe into the head so I'm guessing that I am missing a couple pieces I think. They were attached to a really old pair of Mac mufflers but I contacted Mac and they said...

So i have two questions, first im just going to be running kickstart so should i upgrade the coils and ignition, or just the coils? Second my pipe on the left side of the bike is yellow, so that means its running lean?:confused: