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Standard Build Service - BRZ / FRS



This Build Service includes upgrades and replacement parts to your transmission:

  • 1st - 5th Gear Synchros
  • 3-4 Shift Fork
  • 3-4 Gear Slider
  • 3-4 Gear Slider Over-Extension Modifications
  • Input / Output Seals

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

This build package was designed to fix the most common causes of poor quality shifting, while correcting several key areas to increase reliability.

When the 3-4 Shift Fork / Gear Slider over extends on the gear hub, there is a chance that the small synchro spring and detent ball can pop out; causing additional issues. This repair / upgrade is included with all of our build services.

Additional parts / services may be required, depending on the condition of your transmission.


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.


Parts cleaned using industrial parts washers.  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.


 **As of current, custom foam inserts are not available for the AZ6 transmission. Your transmission will still be properly packed and insured.

 Have an aftermarket gear set? We have experience installing those too! 

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 110 gal 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.  

Thank-you for viewing our site and considering us!

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