DMAX Diesel 6.6 Complete Stage 4 Allison Transmission (800hp) | 2001-2016 GM Duramax 6.6L

Fully assembled, The DmaxStore stage 4 transmission is an outstanding value and more than capable of getting the job done. Perfect choice for the Duramax owner who is running some higher horsepower tunes, larger turbo, larger injectors/pump, and is planning on taking the truck to the track a couple of times a season. The Dmaxstore stage 4 is ready for almost anything you can throw at it with the stock bottom end.

Your DmaxStore Performance Transmission will be built from start to finish by certified Allison technicians.

The pride you take in your vehicle is the same pride we take in building each and every one of our DmaxStore Transmissions. We’re not happy until you are.

Every DmaxStore Performance Transmission is built with:

• New Seals, Gaskets and O-rings
• New Thrust Washers
• New Bushings
• New Clutches
• New Filters
• New Allison Deep Sump Pan (Optional DmaxStore High Capacity Transmission Pan)
• New Genuine Allison Harness, Solenoids and Sensors
• New Allison Performance C2 Hub
• New Torque Converter

Stage 4 Transmission features:

• Precision Industries Billet Triple Disc ML Converter ​(Provided Torque Converter Bolts must be used or damage may occur)
• The Precision ML series is our #1 selling converter. An excellent choice for customers who primarily use their trucks for heavy towing, daily driving, and occasional drag racing or sled pulling. Performs great with stock or modified turbo's. Stall speed is very similar to stock approximately 1900 rpm. Its proprietary Triple Billet design makes it virtually indestructible.
• Performance Clutch Kit (C1-C5)
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• Other builds on the market only provide C1-C4 Clutch Packs, We add the C5 pack at no extra cost to make this build the most complete on the market.
• Valve Body Upgrades​
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• Transgo Shift Kit (2001-2010 Trucks)
• Transgo Boost Valve Regulator Upgrade (2001-2010 Trucks)
• Ratiotek Valve Body Upgrade Kit (All Years)
• Allison Performance C2 Hub
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• Designed to improve lubrication for the C2 clutches.
• Lack of lubrication causes premature clutch wear especially when power has been increased.
• Billet PTO Covers with Stainless Steel Bolts
• Optional DmaxStore Transmission Pan
• Cast aluminum construction with cooling fins for better heat dissipation
• 1.35 Gallons of added Fluid Capacity over the stock pan for increased cooling
• Built in filter lock to keep your internal filter in place
• Textured Black powdercoat finish
• Oversized Magnetic Drain Plug for hassle free oil changes
• Port for additional oil temperature sensor (sold separately)

DmaxStore Note:

• This is a custom order part, once it has been processed, it CANNOT be canceled, returned, or refunded.
• Please keep your transmission cooler line fittings and inspection cover from your core transmission.
• 5 year unlimited mileage warranty on the Precision Torque Converter
• 2 year unlimited mileage warranty for internally lubricated parts, seals, and gaskets including the Torque Converter and Clutch Packs.
• Subsequent damage caused by a failure external to the transmission internals is not covered under warranty.