Mac Exhaust

[Guest]

Seems to be some general dislike of the exhaust systems from Mac Performance. Why?

[posplayr]

Seems to be some general dislike of the exhaust systems from Mac Performance. Why?

apparently poor quality. If you clean it up and do a quality ceramic coating it might be OK. Never had one so dont know for sure.

[Nessism]

They use an all metal baffle that doesn't blow out, but sounds a little tinny compared to a glass baffle. As far as the finish goes, yea, not the best, but most other aftermarket pipes are in the same boat so I suspect Mac gets bashed more than they deserve.

[SVSooke]

I bought one years ago for s Seca 550.seemed OK to me.Had a mystery pipe on the GS650E that I got with the bike.It had a all metal baffle and I always thought it was a MAC.Had that bike for years and the pipe looked good the whole time.

[Graham]

Mac is a good exhaust system for street performance.
They had a ceramic-coated system in the late 80s and a stainless steal in the early 90s.
My Mac header is a Gemini system for a GS1150 and has a Kal-guard coating.
I haven’t used the current systems they sell but I sure they are good quality.

[1_v8_merc]

Wow, im surprised?

I thought everyone on here LIKED the MAC's?

I've read nothing but good stuff about them.
And for $350, I would think it should be pretty good.

I like the MAC setup, because I plan on doing a Stage-3 Jet, and MAC allows you to pop the system in half, and just run open-pipe.

My current exhaust pipes do not let me do this, for some reason!
They are like fused together.....I have some mix-matched bolts on my 650 exhaust, so I'm thinking someone replaced it, at one point....

[midnightcafe]

if you're looking for a chrome exhaust, avoid the MAC system. They have shoddy welds and poor finish compared to other systems. If you're looking for a cheap aftermarket exhaust, a used MAC could be down your alley. My MAC works great for what I paid for it.

I was surprised to find the MAC muffler is actually relatively quiet compared to other systems. It's louder than stock but quieter than other systems out there.

[850GT_Rider]

Who then, makes an decent aftermarket 4-into-2 that mimics the original equipment?

Are we stuck with either MAC or trying to find some NOS made from unobtanium?

[mlinder]

It seems the only readily available header and exhaust systems available for the gs650 is the MAC. Not that I have a problem with that, but wondering if anyone else makes something... Anyone know?

[koolaid_kid]

Who then, makes an decent aftermarket 4-into-2 that mimics the original equipment?

I have never seen one in my xx years of riding. (I purchased a new 78 GS750E, so that gives you a ballpark idea of the value of xx.) I find the turned out mufflers of the MAC 4 into 2 absolutely hideous, but that's just me.

Are we stuck with either MAC or trying to find some NOS made from unobtanium?

You might be able to find a used stock set, but that would just be a matter of chance.
Like this set: http://atlanta.craigslist.org/atl/mcy/2061365457.html

[Nessism]

Jama makes a 4:2 for the GS850. Hard to come by these days in the US though.

http://www.laser-exhausts.com/wp-content/uploads/npipdf/SUZ_072_0850_GS_952009_GS850.pdf

[850GT_Rider]

I have never seen one in my xx years of riding. (I purchased a new 78 GS750E, so that gives you a ballpark idea of the value of xx.) I find the turned out mufflers of the MAC 4 into 2 absolutely hideous, but that's just me.

Yeah, I do too. They show a picture of megaphones on a bike, but don't have a set for sale like that.

This whole thing comes about because I'm adding the Bates luggage, so my VH 4 into 1 upturned megaphone interferes. I may keep the 4-1 header, and add a straight megaphone from J.C. Whitney or something as a temporary measure.

Anyone out there want to trade a nearly pristine V-H 4-1 for an OEM 4-2 system in equally excellent condition?

[Can_O_Tuna]

apparently poor quality. If you clean it up and do a quality ceramic coating it might be OK. Never had one so dont know for sure.

Fit is good, they just rust fast! The chrome rusted in less than 6 months. Performance is just ok compared to V&H. My V&H 4:1 lasted 18 years, with minimal care. YMMV

[mlinder]

Appears nothing out there for the 650 other than Mac. Went ahead and ordered a new 4 into 1 this morning.

Maybe I'll have it coated.

[emjay]

... You might be able to find a used stock set, but that would just be a matter of chance.
Like this set: http://atlanta.craigslist.org/atl/mcy/2061365457.html

Wow, only 50 bucks, if they're any good someone should grab them.