Ultimate Synchro Build Service
If you want the best shifting trans on the market with large double synchros from 1st-4th gears, this is it! More info about our large double synchros HERE. This means it is designed for superior shifting, not high power. If you plan on making more than 400hp to the wheels, please consider the RR Ultimate Ratio transmission build service as it uses a stronger gear set.
This transmission has an incredible shift feel and quality unmatched by any other trans! You can race at the track and drive it to work the next day. This trans is assembled with the highest quality materials and workmanship possible to assure a unit which works as intended and will live. It will shift beautifully, and operate quietly.
All machine work and modifications to the gearbox are performed in-house using state-of-the-art equipment and techniques. We do not farm anything out and control every part of the rebuild process here.
- Latest Revision All Bronze Synchros (Forward Gears)
- Large Double Synchro 1st - 4th
- 4 Spring 1-2 Hub
- Transmission Filter Modification
- Strong Neodymium Magnet
- Welded, 4-Spider, or 2-Spider Center Diff Options in the menu above
Attention to detail
We also spend a lot of time on synchro timing, alignment and operation to give you the best shift possible. Click -> Synchro Blueprinting
WPC GEAR TREATMENT
WPC is a permanent surface treatment that reduces friction while strengthening the part. Its unique micro-dimple formation pattern greatly reduces friction and is unmatched by conventional methods of surface treatment. It is a proven process that has been utilized for many years in the racing and automotive industry and is complimented by utilizing our REM/ISF treatment. WPC can strengthen parts in two ways. First it adds an extremely high level of compressive stress at, and near, the surface. The second, is that the WPC treatment creates a Nano - Crystalline structure at the surface of the metal. Both of these mean that metal fatigue and crack initiation are both noticeably reduced; thus strengthening the gears and shafts inside of the transmission.
REM ISF MICROPOLISH
REM / ISF is a gentle polish on the gears done by machine that will smooth and remove some stress concentrations uniformly. It also polishes the gears in the area they make contact with other parts, so you have less friction loss which means less heat, better fuel economy, and longer life.
Heavily worn or damaged units
Please note- any additional parts needed which are not listed below and not part of this build will cost extra to replace. We will email with pictures and detailed information if this is the case. We know you do not like surprises, so we try to make this process as painless as possible. If this turns out to be the case, please note that it is due to the fact that we want you to have the highest quality trans possible. Again, quality is the key here and sometimes it costs more to do this in an aging platform. It is not worth the risk of using a sub-par part if inspection reveals it is a weak link.
1-2 Shift Fork combined with our efficient double synchro makes for a very strong and reliable assembly. You will never have to worry about a broken 1-2 fork again.
3-4 Shift Fork
Jacks Trans machined double synchro 1st gear upgrade, with removed lip, to allow for longer synchro life.
Jacks Trans machined double synchro 2nd gear upgrade, with removed lip, to allow for longer synchro life. Please note that this gear is NOT the same as the double synchro 2nd found in the 2G. Our gear is designed with more room for synchro wear and a more precise fit.
Jacks Trans machined double synchro 3rd and 4th gears, large Super Synchro upgrade, with removed lip, to allow for longer synchro life and superior shifting performance. More info HERE
All Bronze 5th Gear Synchronizer Blocker Ring (Excludes early 90 style 5th)
1-2 Synchronizer Hub
1-2 Synchronizer Slider
3-4 Synchronizer Hub
3-4 Synchronizer Slider
1-2 Synchronizer Springs (x4)
3-4 Synchronizer Springs (x2)
1-2 Synchronizer Shoes
3-4 Synchronizer Shoes
Input, Output, and Axle Seals
Tapered roller bearings on each end of intermediate shaft. It is becoming more common, now that these units are aging, to see intermediate bearing failures. We replace them in every rebuild to assure reliability.
1-2, 3-4, and 5-R Roll Pins
Drain Plug / Fill Plug / Reverse Idler / 5-R Rail Detent Washers
Neodymium Trash Magnet
Want to upgrade to a 4-spider diff for friendlier street use? Select from the pop-down options above!
4-Spider Option Includes:
Center Diff Upper Torrington bearing
Center Diff Side Shims
New Spider Gear Kit with Pinion Gears
Machined Cross Shaft
Machined Lower Housing
We will also weld scoops to each side of the center diff housing to help with lubrication. More info HERE
Bearing preloads are reset to our specs for maximum bearing and gear life.
Clean environment and state-of-the-art cleaning equipment
Parts cleaned using industrial parts washers and Aluma Blast coating. Exceptionally clean units is one of the reasons why our transmissions are the highest quality in the business! We have state-of-the-art cleaning equipment which other trans builders could only dream of. More info HERE
With the best cleaning equipment, we also have a very clean facility. All units are built in a spotless environment and using tools, and benches, which are clean and only used for assembly purposes. In other words, the same tools used to pull your dirty old trans out of your car are NOT the same tools used to rebuild your pristine unit afterward. Take a look at the typical shop and check their tools. It is shocking how dirty things are in most shops and that dirt will end up in your unit. That doesn't happen here.
Your unit is also shipped in a double walled custom made box for Jacks Transmissions. Your unit will be sitting snugly, and safely, in preformed foam pads to assure safe delivery.
Thanks to the Mitsubishi Community
Jacks Transmissions has grown into a company which now services exotic and terribly complex DCT (dual clutch transmissions) used in the GT-R, SST, Porsche PDK, Audi, WV, and many more high end vehicles including the Lambo robotic E-gear. Due to this exciting change, we have spent a lot of money for the state-of-the-art equipment needed to service these high dollar and expensive units you find in $100k+ vehicles. We have designed and built many of our own parts for these vehicles.
We love the Mitsubishi trans and have not forgotten that it's these units which got us to where we are today. We will continue to service them as we want to continue to support the community. This is a great opportunity for the Mitsubishi enthusiast to have a build using the same high-end equipment to service the Mitsubishi trans as we use for the expensive exotic units. This means that the cleanliness and attention to detail is unmatched!
All machine work, cleaning and detail work is performed in-house by very talented technicians and engineers. The quality you get from Jacks Trans at the price we have listed is an unbelievable bargain. We do not know of anyone else which cleans the trans via a 110gal ultrasonic and Pulse-Jet unit, or employs such talented and expensive people.
The quality and experience you get from Jacks Trans shows with the overwhelming number of high-end vehicles we now service at the shop. Be a part of the rare opportunity to have one of the cleanest and most experienced shops in the World service your trans!
Our pricing structure was created to assure only the highest quality materials and workmanship. Anyone which beats our price is taking short-cuts which you will pay for in the end. Look into the details of our rebuilds and you will see the additional attention we provide which is unique and can't be duplicated. We would be honored to keep the DSM tradition alive and service your trans!
Thank-you for viewing our site and considering us!