TMZ Performance

TMZ Performance offers several high-quality performance part

upgrades for your vehicle's drivetrain.  Check out what we are

currently offering below!








Custom 4-Spider Hardened Chromoly Cross-Shaft for 1990-1999

DSM Transmission Center Differentials AND Torrington Bearing

Machinework Modification:


*$560.00 for 4-spider conversion on YOUR GOOD center
 
differential core (Services Only).

OR

*$1,060.00 for a completely NEW 4-spider center differential

(Parts and Services).

Pick Your Option

Brand New Center Diff Assembly $1,060.00 Send in your Good USED Core for Machining $560.00

Details:

This custom cross-shaft is designed by Beyond Redline Performance and is used in our Heavy Duty 4-spider center differential upgrade for the DSM AWD 5-speed transmission. 

It is forged 4340 chromoly tool steel that is machined from an ingot by a 5-Axis CNC Mill, then oil-grooved, shot-peened, heat-treated and carbonized. Rockwell hardness is around 60-62. That results in an approximate tensile strength around 115,000-120,000psi. It is essentially classified as a hardened tool steel part.

It is by far the strongest cross-shaft on the market for these vehicle applications and provides owners with complete streetability on high-horsepower AWD applications.  Instead of machining down the stock cross-shaft to accept 4 spider gears, this part started from scratch with better material, a beefier structure, surface hardening, and oil passage grooves on its posts to provide proper oiling to the spider gears to prevent surface galling. 

The Beyond Redline Performance cross-shaft has been proven to hold over 1000HP and 950TQ at the crank on my race car for the last 5 years without signs of galling or damage.  It has been proven on the race track, the street, and the dyno to survive the harshest conditions without failure.

This part is available for customers that have their transmissions at our shop for service or rebuilds or when the customer ships their complete functional center differential assembly in for the associated machinework to the center differential case and center differential cover to accept the Torrington Bearing Modification and the heavy-duty cross-shaft.

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***UPDATE***

Custom 4-Spider Hardened Chromoly Cross-Shaft ONLY:


*$205.00 for the cross-shaft seperately!

Pick Your Option

Buyers in USA (48 Contiguous States) $205.00 International Customers $215.00

Details:

I have been getting ALOT of customers wanting to purchase the cross-shaft seperately so they can upgrade their existing 4-spider center diff, or for those that can properly do the differential machinework on their own.  Because of this, I am now selling the cross-shaft seperately for customers within the USA (48 contiguous states), and Internationally for two different shipping costs.  Please pick the proper payment button depending on your location!

This custom cross-shaft is designed by Beyond Redline Performance and is used in our Heavy Duty 4-spider center differential upgrade for the DSM AWD 5-speed transmission. 

It is forged 4340 chromoly tool steel that is machined from an ingot by a 5-Axis CNC Mill, then oil-grooved, shot-peened, heat-treated and carbonized. Rockwell hardness is around 60-62. That results in an approximate tensile strength around 115,000-120,000psi. It is essentially classified as a hardened tool steel part.

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