My Cart


First Post!

Posted on

Hello! Thank-you for visiting our new website! If you can’t already tell, I (Jack M.) put this site together myself. I am trying to make it easier to find the parts you need for the DIYer, better and more rebuild options, updated tech articles, and easier navigation for our customers. If you have any issues please let me know. If you like or don’t like please feel free to comment. Also, if you have any advice on anything you would like to see added to the site feel free to comment on that too! Thanks for visiting!!



  • honda: March 09, 2011

    Nice site you have! Keep it up. I hope you’ll post more products for us in the future. rich.

  • columbia university college: September 23, 2010

    Can I just say what a relief to find someone who actually knows what theyre talking about on the internet. You definitely know how to bring an issue to light and make it important. More people need to read this and understand this side of the story. I cant believe youre not more popular because you definitely have the gift.

  • Jack M.: December 19, 2009

    Hello! We will have to look at the case to know if it’s worth saving or not. For a Premium build, I would say it’s not worth saving the broken case and we should use a good fresh case with no damage. We have a lot of 5-speed 3S trans case parts here, so finding the appropriate pieces to make the case 100% perfect wouldn’t be a problem. We use the Genuine Mitsu seals from the factory. The synchros are also Genuine Getrag (the manufacturer of your trans) and the latest steel/bronze revision for better performance and longevity. If you have any pictures of the cracked/repaired area please send it to my email and I should be able to figure out what it would cost to replace it. There have been some advancements in clutch selection for the 3S lately. I would check with some of the retail aftermarket parts distributers out there for the 3S to see what they would recommend. I would use the factory clutch, but with a puck style disk. That may be a little harsh though and they might have something better available.



  • Mark: December 19, 2009

    Hello- very nice website here….am considering the 3S Stage 3.0 premium rebuild for my ’93 Stealth TT 5-speed. If you rebuild my unit, the tranny case cracked and has been welded once already several years ago, and the weld is now slowly starting to leak. The main seal is leaking like mad now. What becomes of my cracked casing? Are seals standard Mitsu ones for the rebuild, or something different? I just had all seals replaced by Mitsu on the T-case, so it is not leaking a drop now, would you still want it along with the tranny? One last Q (I promise)- any recommendations for a clutch, I do know that if I ever quarter mile the car, the stock Mitsu is not the one to use. I am still all-original on the tranny, T-case and clutch at 105K miles, never raced. THANK YOU…..Mark, Cleveland, OH

  • Dustin: November 05, 2009

    Great job on the new site. I have a Jack’s premium all Evo III geared 2nd gen DSM tranny and have had no problems! :)

  • Jack M: October 15, 2009

    Hey, thanks! Right now I’m just trying to get everything good as far as ordering and parts go. Once that is done I will try to make it more appealing and maybe change a few things to make life even easier in here.

  • jake m: October 15, 2009

    i like the site, its very easy to find what u need!! Ive been lookn for weeks trying to find someone that sells shift forks and synchros

  • Jack M: October 14, 2009

    Hello, yes, we still do IC pipe setups here if we have the time. If we plan enough in advance we can usually still squeeze them in. With our industrial plasma cutter, band saw, and TIG welder it’s no problem building IC pipes. Here is a project I have been working on for my car:

    Keep in mind it’s not the best looking due to the scrape metal I’m using.

    Here are better examples of our welding work:

    I have a bunch of really impressive pics at home. If I remember to bring a copy to work here I’ll post them in there for you to look at.

  • Dan: October 13, 2009

    Hey site looks great! not to mention very easy to use! Love it!
    Do you still by chance offer the i/c install for the 2g dsm?

  • Jack M: October 03, 2009

    Hello, I spent over $10k on a set of flywheels, but I goofed on the design and they were too short. The disk on the flywheel end didn’t sit on the trans input shaft fully so there is a risk of damaging the shaft. Other than that they were perfect. I’ll make more, but due to the huge loss in these things we are taking a break from them right now. Everyone using the cast versions still run them and they still work perfectly. It’s too bad, because those Tiltons work and feel so nice! I may have found a better solution though to the clutch drag issues for single disk units. 90% of the people that use twin disks don’t need them and only use them due to the terrible high RPM clutch drag issues single disk units have. I ‘think’ we may have found a solution to this, but I want to test it on my car next season first.

  • Clark: October 02, 2009

    Site looks fantastic! I may have missed it, but are you guys still building twin disk setups? :)

  • Jack M.: September 29, 2009

    Awe, shoot. I see that now too. I’ll try to fix it. Thanks!!

  • alex: September 13, 2009

    The new site is looking nice.
    Im not sure if you were planning on it, but if you could make the thumbnail sized pictures clickable to large pics it would awesome.

Leave a comment

Hello You!

Enter your email address for stock alerts, discounts, promotions and more!