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  1. mattmullins

    i put ufo's on my dale walkers 4-2

    So I bought so ufo mega phone's and put on my dale walkers, the walkers was 1 3/4 id they was fine not loud when riding but when I let somone ride it so I could here them going down the road souded great different than when in was riding it , and with 150 mains in allways seem to be running a...
  2. bazwell

    Who's got a black Marks 4-2?

    I am looking for pictures/opinions on the black Marks system. I have seen a couple of pictures of FootNotes system, and he has black cans which look OK. I wonder if there are any more pics of fully black systems, and has anyone had one for a while that can tell me how they look after a while...
  3. M

    Marks 4-2 exhaust ?

    First I have to say, this is the BEST Vmax fourm online... Now my question.. I just got off the phone with Mark about getting one of his 4-2 systems for my K4, the problem is that my bike has a COO braced swing arm & Mark does not have a bike on hand to give me the crossover location....So what...
  4. SpecOps13

    Real Metal Turn Downs on My Mark's 4-2 This Time

    One had a good laugh at my experimenting with PVC Turn Downs among other things a few weeks back. A good number of you came to my rescue. It was an experiment and was never intended to be permanent. The Wild Ass'd Skull, Top Cover however will eventually become a reality, As It Is...:rofl_200...
  5. MR_NST

    marks 4-2 black ceramic on the way!!!

    called marks, and quite simply and easily... ill have an exhaust at my doorstep in 3 weeks or so. price was negotiated very quickly and im extremely excited... i have lots of mods to install, keep posted. oh yea. 14 inch, by 2 3/4 outlet... should go BOOM!!!!!! peace, evan....
  6. 0

    Marks 4-2 made my A/F ratio rich?

    I added a Marks 4-2 exhaust with the 14" cans and had my bike dyno'ed to see what adjustments need to be made. The dyno chart shows me very lean at idle then rich from about 2K all the way to red line. My A/F ratio from 2K up is around 12-1 I would have thought a better breathing exhaust would...
  7. A

    Holeshot 4-2

    issue with file
  8. mavgrab302

    jetting for Marks 4-2

    Ordered the 4-2 Marks today. Anyone on here have a good starting point on jetting , needle pos., mixture @ sea level, etc......with the exhaust? I also drilled my slides, so anyone with similar setup I'd appriciate your input.
  9. ghostntheshell

    marks 4-2 exhaust vs hindle 4-2-1

    Hey there guys. Got a question. Not sure if I will have the definitive answer I'm looking for: Which exhaust will provide the most power. I know this is a classic exhaust question and will boil down to a lot of different opinions. I would prefer an answer backed by dyno. I think I recall a...
  10. radar-4460

    ufo 4-2 system clearance issue

    please help. the problem i'am having is the left rear head pipe is touching the rubber boot that goes around the drive shaft output.:ummm:
  11. K

    HMF 4-2 Carbon Fiber Exhaust on ebay!

    Saw this on ebay and thought I would pass it along. http://cgi.ebay.com/ebaymotors/VMAX-HMF-4-2-w-Carbon-Fiber-cans_W0QQcmdZViewItemQQ_trksidZp3286Q2ec0Q2em14QQhashZitem2c50c06f02QQitemZ190333349634QQptZMotorcyclesQ5fPartsQ5fAccessories
  12. Birdoprey

    Any wanna trade their Kerker 4-2-1 for a Marks 4-2?

    I'm considering going with a Kerker 4-2-1(or possibly Marks 4-2-1, or big tube 4-2-1 of some kind???) instead of my Marks 4-2. Anyone wanting a nice dual setup? Its a full SS system. Has dual 14" alum cans. I have the straight tips and the sportbike-like turn down tips(just bolt in). I had the...
  13. odieoh24

    HMF 4-2 and Otec 250 swingarm

    does or has anyone here used the otec 250 swingarm with an HMF 4-2 exhaust? will it work? thinking of getting a little crazy but i gotta do my research first and then get some steady work. figure i can at least start the legwork for future plans. thanks odieoh24
  14. asphalt demon

    holeshot 4-2?

    does anyone have the holeshots 4-2 how do they sound, good quality, best hp for the $?
  15. Rusty McNeil

    UFO 4-2 with no cans

    Out of boredom and too much time on my hands I removed the cans from my UFO4-2 and took it for a spin.... I't's loud but not as loud as I would have thought, but for sure wouldn't want to drive by the Po-Po like this...gives true meaning to the SBC with a heavy cam sound.....especially at...
  16. maleko89

    Dale Walker 4-2 exhaust on Ebay

    http://cgi.ebay.com/ebaymotors/Yamaha-V-MAX-Exhaust-Dale-Walker-Exhaust-V-MAX_W0QQcmdZViewItemQQcategoryZ35596QQihZ006QQitemZ160235572870QQrdZ1QQsspagenameZWDVW This is a very good system!
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