Evolution 4-9 Transfer Case Rebuild Services




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Every Tranfer Case we build receives the following services as standard:

Tear down

Your transfer case is carefully disassembled and inspection reports are filed.  When it comes to upgrades and services we will assist by explaining all the options and the pro’s & con’s, so you yourself can easily make the wise choice when it comes to what you really need and not just what we can sell you.

Hot tank degreasing

We use a high pressure hot tank and mild biodegradable detergents remove the toughest soils leaving no residue your cleaned parts. Your transmission parts come out so squeaky clean, you could eat off them.

Contact pattern analysis

Hypoid gear contact patterns are noted for potential trouble with the alignment of the main housing and pinion housing.  This will be compared against the final assembly contact patterns.

Wet magnaflux crack inspection

We use a wet magnaflux machine detect cracks that you can’t see with the naked eye. Think of it this way, would you go to a surgeon who doesn’t use an X-ray machine?

Glass beaded transfer case

TRE glass beads the transfer case housings at a low pressure at high volume, making for a nice looking transfer case because the glass beads don’t impinge the aluminum. The cast iron front housing receives a heavy coat of satin black epoxy paint so it looks like new again. While we dislike most paints and coatings, we can send your transfer case out for powder coating for a fee. Many colors are available.

Final inspection & assembly

With a thorough understanding of what needs to be done to improve durability backed by army of machines and specialized tooling are experts in the arena of inspecting gear contact patterns and making corrections to both the transfer case housings and gearsets to insure a proper and full uniform tooth contact for maximum durability.

Spin tested

While we are not able to dynamically load test the transfer case in the most scientific manner we can still spin test them up to 1800 rpm and check them for noise.

Shipping Services

TRE offers the best transfer case shipping service. Our double wall boxes are larger and provide the best protection in the industry against damage during shipping & handling.  We care about your drivetrain components.

Click Here to Request a Quote for your EVO 4-9

TRE builds the best transfer cases for your high power Mitsubishi EVO.  Our transfer cases are proven and durable.

To be more transparent about what goes into a build, we no longer advertise “Stages” of our builds.

All transfer cases receive the following new parts:

New input  coupling tapered roller bearings

Bearings are designed to have a certain amount of preload or clearance on them for long service life. TRE uses Genuine Mitsubishi bearings, making sure they are set right on the money, through proper techniques that provide the longest bearing life while holding the gearsets tight.

New oil seals & o-rings

All oil seals & o-rings are replaced with OEM Mitsubishi, the best available for your ACD or NON-ACD transfer case.

New pinion bearing retaining nut

Pinion nut is considered a NR part, (not reusable).

New spacers

Bearing shims are serve the important job of holding bearings at their prescribed preload/clearance.

New fasteners

All fasteners are replaced with shiny-new hardware.

New transfer case breather

We replace the breather with a new unit.

Click Here to Request a Quote for your EVO 4-9