Allison 1000 “GPZ TORQKIT MAX” Master Combo Kit with all TORQKITS. Fits Allison 1000, 1999-2010 #AGPZTM1-C

$ 2109.00 $ 1898.00

Add Overhaul Kit ? *

Torque Converter Core Charge ? *


“GPZ TORQKIT MAX” Allison 1000 Master Combo Kit with all TORQKITS and Billet Triple Clutch Torque Converter #A1000-2. Fits Allison 1000, 1999-2010. Torqkits have more clutches than the stock clutch count.

This Kit Comes With:

C1 Clutch GPZ TORQKIT #RTK-1001

C2 Clutch GPZ TORQKIT #RTK-1002

C3 Clutch GPZ TORQKIT #RTK-1013

C4 Clutch GPZ TORQKIT #RTK-1014

C5 Clutch Red Stage 1 #RTK-07

Billet Triple Clutch Torque Converter #A1000-2

Add overhaul kit if needed.

With the age of electronic controls and computers extra power on your diesel rig is now easier than ever with the touch of just a couple of buttons and a small hand held programmer. These huge torque monsters seem to be flooded with all the bells and whistles of a teenage boys desire for the ultimate toy. Unfortunately this huge torque monsters with big nasty wheels and tires do come with some downfalls. The added stress of larger wheels and tires along with the monster torque numbers that accompany it you can easily see how this could wreak havoc on a transmission. Let the havoc be ended now and feel comfortable the next time that Cummins or Powerstroke pulls up beside you. 

As technology has advanced through the years so has the friction industry. In the past few years we have seen an increasing demand placed on late model clutch to clutch units, primarily as a result of how easily extra power can be harnessed with the pressing of a few buttons using an aftermarket programmer. In some cases the torque demands will double the factory requirements. When this is combined with the added torsional load of larger tire and wheels its easy to see why so many people are left with failure after failure. 

This is where the GPZ friction material shines. This latest state of the art friction material was originally developed in commercial and industrial application where constant cycling caused premature wear and excessive heat.  While this friction material is incredibly resistant to extreme heat caused by high energy loading it also has a higher breakaway coefficients than any other friction material available today giving it an advanced shift feel. This clutch was also designed to have an extremely low compression rate which is critical in maintaining acceptable piston travel over time for the unit.  

The desired endpoint / midpoint ratio remains constant even under increased energy for very smooth yet fast engagements, and on a clutch to clutch transmissions this is imperative. This  also shows excellent compliance to the reaction plate/ fluid interface and will conform to any surface imperfections for optimum performance.

Look for the Raybestos GPZ Power Packs on this site!

About GPZ:

Raybestos Powertrain GPZ friction plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds OE material to withstand high stress, high temperatures and repeated cycling. GPZ plates outstanding performance benefits are perfect heavy-duty vehicles and high-stress driving. Testing of GPZ revolutionary friction material shows that it outperforms OE materials by as much as 20%. Plus, its performance improves as the power increases.


  • Withstands high horsepower
  • Greater torque capacity
  • Maintains piston travel
  • Optimum performance
  • Higher heat resistance
  • Smooth engagements
  • Enhanced shift feel

The following models were fitted with this transmission:

  • Isuzu FTR Diesel 2005-2009
  • Isuzu FVR Diesel 2005-2009
  • Isuzu HTR Diesel 2005-2008
  • Isuzu HVR Diesel 2005-2008
  • GMC Sierra 2500 HD 2001-up
  • GMC Sierra 3500 2001-up
  • GMC Sierra 3500 HD 2001-up
  • Chevrolet Silverado 2500 HD 2001-up
  • Chevrolet Silverado 3500 2001-up
  • Chevrolet Silverado 3500 HD 2001-up

This transmission is known by multiple names, including: Allison 1000, T-1000, LCT-1000, T1000, Allison 2000, T-2000, LCT-2000, T2000, Allison 2400, T-2400, LCT-2400, and T2400


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