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MAC exhausts for XS

Discussion in 'The Garage' started by arcticXS, Apr 1, 2019.

  1. arcticXS

    arcticXS XS650 Guru Top Contributor

    Lately, I have been thinking about TT style headers, as they give more freedom for rearset linkages, (in addition too looking damn cool)
    Today, I came across the MAC website: http://www.macperformance.com/new-motorcycle-exhaust.html
    It seems they have 2 different systems, 1 with individual pipes, and 1 with an X-collector. Unfortunately, both systems have 1 3/4" headers, which I understand would be too large for good street performance, at least in theory.
    I really would like to hear any experiences or opinions regarding these 2 exhaust options?
    Performance, sound, weight,fit & finish, ground clearance, etc.
    Currently my XS has 1 1/2" headpipes and "Commando" mufflers from Heiden Tuning, same as MikesXS sold some years ago. They look good, but not as good as the MAC TT types.....
  2. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    Like these?


    I ran similar 1-3/4" close-fitting tuck-under TT pipes like that for years. Didn't have any clearance or overheat problems with them. Spend some quality time with them, adjusting overall exhaust length, reverse-cone mufflers. My best streetable length was having the muffler end about 4"-6" ahead of the rear axle.
  3. arcticXS

    arcticXS XS650 Guru Top Contributor

    On a 650, or a larger capacity engine? No loss of low end and mid range torque? Any kind of "torque" inserts used with these larger pipes?
    TwoManyXS1Bs likes this.
  4. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    Eeeeerrrrruuummmmm, yeah, a 750cc.
    There's a bunch of other stuff going on in that thing, maybe I shouldn't have used it as an example. Doesn't use or need torque inserts. The important part is to allow yourself some leeway to play with the exhaust lengths and mufflers...
    arcticXS likes this.

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