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EVO 8-9 Performance Trans Build


Formally known as our Drag Transmission, this is the best helical / synchronized transmission build we offer for high power applications. This trans is very strong because of our Tapered Input Shaft Bearings. It 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 trans 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.

There are many options for the EVO trans. If you would like to add more or change what is included please email us.

Have questions regarding gear ratios and final drive ratios? We have created a chart which compares the various gear and final drive ratios: EVO Ratio Comparison

Attention to detail

We spend a lot of time on synchro timing, alignment and operation to give you the best shift possible.  Click -> Synchro Blueprinting 

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.


Forged Splined Output Tube

Tapered Input Shaft End Bearings

1st Gear Triple Synchro Rings

1st Gear Triple Synchro Spring

1-2 Gear Slider

2nd Gear Triple Synchro Rings

2nd Gear Triple Synchro Spring

3rd Gear Double Synchro Rings

3rd Gear Double Synchro Spring

3-4 Gear Slider

4th Gear Synchro Ring

4th Gear Synchro Spring

5th Gear Synchro Ring

Please Note: These 5th gear synchro rings will grind right out of the box!  We detail these synchros so the timing is set up correctly and the synchro works and performs properly.

5th Gear Synchro Spring

5-R Gear Slider

Reverse Gear Double Synchro Rings

Reverse Gear Double Synchro Spring

Double Roll Pins 1-2, 3-4, 5-R Shift Forks

Input Shaft Oil Seal
Output Oil Seal

This rebuild also includes a FREE High Temperature Coating!

Forged Output Tube

Our custom made forged splined output tube is included in this build! More information can be found here: Forged Splined Output Tube

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 Micropolish 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.


Micropolishing 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.

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 trouble free delivery.

Core Exchange Service

Please EMAIL us for price and availability. Many of the build services we offer can be performed on an 'exchange' basis. Core charges and core convenience fees are separate from the costs of the build service. In many cases, core fees can be refunded pending the condition of what we receive. Note: We will retain a 10% convenience for this service.

Thanks to the Mitsubishi Community

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 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 EVO tradition alive and service your trans! 

Thank-you for viewing our site and considering us!

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