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  1. MTRHEAD

    SOLD Superjet rear sponsons

    FS modified JSU/Kommander rear sponsons and custom homemade stuffer sponsons. Sold as is. They work. $40 shipped in USA Please msg
  2. MTRHEAD

    SOLD Kommander SJ custom rear sponsons stuffers

    For sale custom Kommander rear superjet sponson with welded on stuffers to create one piece rear sponsons that adds up to 1-2mph. These work as good or better than the other brand plastics ones $50 shipped in USA Please message
  3. MTRHEAD

    SOLD FS: JC racing racing mid sponsons

    for sale JC Racing mid sponsons. Excellent condition. I shortened the front “not the actual blade portion” because I combined them with a rear stuffer to stay under 36” Work good $50 shipped in USA Please PM
  4. MTRHEAD

    Porting engine cases

    Need to epoxy the front when slotting the full case next to stator. I use Splash Zone two part. They call it green death. It’s used on cylinder heads in car racing
  5. MTRHEAD

    adjustable timing charging ignition

    Yes that’s mine and it is fully programmable by pc and I also have the Factory Fire brand new that’s programmable by palm pilot
  6. MTRHEAD

    adjustable timing charging ignition

    No all of those I listed plug in and you still charge
  7. MTRHEAD

    adjustable timing charging ignition

    What do you mean by charging coil? Look in parts for sale there are a few cdi’s that plug in msd. Not adjustabel epic hx3 adjustable factory fire adjustable advent adjustable
  8. MTRHEAD

    WTB/WTT Riva Redpipe SJ

    Looking for a Riva red pipe preferably an SJ model. Purchase or a trade for other Yamaha goodies I sold 2 in last few years and need one again please msg
  9. MTRHEAD

    Velocity stack inside stock airbox?

    Found what worked the best on my stock class SXR. Back yard cobbling 15-17 years ago these were the ticket on stock Seadoos about 20-25 years ago
  10. MTRHEAD

    Blowsion 850 sleeves?

    760 62t cylinders the exposed surface of sleeves on the bottom are smooth. Those don’t really like to go bigger than 85.5 701 62t cylinders the exposed surface of the sleeve has a groove midway. Those don’t like to go bigger than 84mm
  11. MTRHEAD

    701 superjet

    The manifold is worth money. Pipe is a paper weight
  12. MTRHEAD

    Buyer beware ADAMTT or FINNLOGAN

    Oh I was stupid and his wrong pick. Friends
  13. MTRHEAD

    Buyer beware ADAMTT or FINNLOGAN

    Buyer beware of adamtt on xh2o / finnlogan on pwctoday. I see he is at it again with a Pro-tec pipe today. He got me over on pwctoday.com his member name over there is finnlogan. I posted a want add for a speedwerx manifold, naturally I bit on his offer and paid him in paypal. I’ve done it...
  14. MTRHEAD

    Wanted: pro tec mach 2 pipe

    Stay away from this dude! I’ll post about him in buyer beware. He got me
  15. MTRHEAD

    Wanted: pro tec mach 2 pipe

    Not a Mach 2 but decent price. It’s a pre-COVID price! Not $600-$800 COVID pricing for a non Bpipe
  16. MTRHEAD

    Velocity stack inside stock airbox?

    Can’t tell you how many things I’ve tried to get more rpm on my stock spec SJ. This is one of them! I will say I did make one for my SXR that really improved it. I’ll post pic later after I find it
  17. MTRHEAD

    Need Custom Sponson advice

    Awesome work! funny, fall of 2001 I saw that Chris Lawrence had these front sponsons on his 2001 SJ on tour. I went home got some 1/2” mahogany wood and screwed them on like a wider hull for 36”. Played a little with radius’s. They worked until they came out with RD front sponsons that...
  18. MTRHEAD

    New FS FactoryPipe FactoryFire CDI ignition system NIB

    I heard one of the issues was when it was held against relimiter a lot it had issues. I know a few people still run them. It was the most advanced at its time
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