ATS High Performance Transmissions are designed to handle heavy loads and high horsepower. All rebuilt ATS high performance transmissions include the following features:

  • Our rebuilt, dyno tested ATS High Performance Valve Body, Alloy Steel Pump, Gear Train, and Clutch Pack.
  • Our heavy duty transmission pan to provide increased lube volume and cooling capacity.
  • High stress areas of case are reinforced - Reduces chance of stress cracks.
  • Critical bolt and thread holes are inserted - Relieves pulled threads or bolts.
  • Valve Body surface is machined flat - Ensures against hydraulic leaks.
  • External surface of case is sealed - Reduces corrosion and fatigue.

For customers pulling extreme loads or customers with high mileage transmissions, we recommend our high performance rebuilt transmission along with a new TripleLok® Torque Converter or ATS Five Star™ Torque Converter . When looking for the ultimate in performance, combine our TripleLok Commander® Lockup Controller with our HD Transmission and Torque Converter. The ATS Transmission, TripleLok Converter, and Commander is the ideal setup when using an exhaust brake, or with a modified engine.
ATS Offers A Progressive Upgrade Path For Your Transmission System With Five Basic Stages:
Stage I
The ATS Five Star™ is a revolutionary Torque Converter that utilizes all of the technologies of a traditional torque converter plus the innovative ATS Viskus Clutch Drive. The ATS Viskus Clutch Drive is the heart of the ATS Five Star™ torque converter.

The ATS Viskus Clutch Drive, along with the fluid-coupling portion of the torque converter, share in the increase of transfer of power through the torque converter. Unlike other torque converters relying on fluid transfer from the impeller to the turbine via the stator, the Five Star™ utilizes ATS Viskus Clutch Drive technology that transfers rotational energy from the engine to the transmission. When the Torque Converter Clutch is commanded to come on, the 5 clutch plates provide a 100% mechanical engagement ensuring no plate slippage during lockup, even at power levels in excess of 2000 foot pounds of torque!

We're so confident in the Five Star that it is backed by the only 3-year 150,000-mile warranty in the business.

Some fo the features of the Five Star™ Torque Converter are:
  • Full Billet Steel Construction in place of cheap steel stamping
  • 5 Disk friction surface with Patented Square Flank Drive
  • Stall speed is perfectly matched to engine torque curve
  • Mixed-Flow stator works with Viskus Clutch Drive maximizing torque multiplication
  • Fully welded impeller and turbine vane section
  • Oversized high load thrust bearings in place of plastic washers

The ATS Commander© has been developed to provide control over converter lockup in your vehicle. Factory computers are programmed to disengage lockup under many conditions that often inhibits the performance of the transmission. With a Five Star™ Torque Converter and The ATS Commander© in place, these non-lockup torque converter situations are no longer an issue.

Stage II
TripleLok Torque Converter
TripleLok Commander Lockup Controller

Benefits listed above plus...

  • Electronically controlled lockup above 30 mph instead of the factory 45-50 mph.
  • TripleLok Commander lockup controller initiates lockup during exhaust braking.
  • Better mileage and performance due to increased time in lockup with 100% effciency.
  • Ability to reliably use an exhaust brake.

Stage III
 TripleLok Torque Converter
TripleLok Commander Lockup Controller
Performance Valve Body Components

Benefits listed above plus...

  • Upgraded valve body for better fluid delivery and shifting.
  • Increased towing ability and longer transmission life.

Stage IV
TripleLok Torque Converter
TripleLok Commander Lockup Controller
ATS High Performance Transmission

Benefits listed above plus...

  • Heavy duty rebuilt transmission
  • The ultimate in transmission reliability and performance

Stage V
TripleLok Torque Converter
TripleLok Commander Lockup Controller
ATS High Performance Transmission
Billet Input Shaft

Benefits listed above plus...

  • Ability to handle upgraded power at or over 450 rwhp
  • Peace of mind when pulling very heavy loads.
An ATS Aluminum Pan is an easy upgrade that can make more difference to your transmission than any other part that can be added to the exterior during a routine service. Extend oil life and scheduled services, lower transmission heat by 30°, and make servicing easier due to the large one inch drain plug with a built in magnet.
ATS offers this Billet Flexplate upgrade option for the 1994-2004 Dodge Ram Cummins. As horsepower and pulling weights increase, the wear & tear also increases. For trucks with upgraded power or trucks which pull very heavy loads this is the perfect add-on to a high performance transmission Packages. All ATS flex plates come with an SFI Certification.
The ATS Performance Transmission Calibration Kit is designed for the Dodge automatic transmission to increase the life of a fresh low mileage stock transmission. The ATS Calibration Kit is specially designed around the diesel engine used in extreme applications such as towing or performance situations. Transmission shift quality, flow rate, and line pressure are optimized to your application. Increase transmission load quality, lubrication, and life with this kit. Recommended for experienced transmission technicians only.
External Transmission Cooling Systems will help to keep your transmission running at optimal temperatures. Cooler flow is a key factor in keeping temperatures in check. The Lubrication Circuit is responsible for over 90% of transmission cooling. Transmission coolers must not restrict flow from and to the transmission, and must extract heat efficiently. When choosing a transmission cooler, it is critical to choose the one that is a self-regulating style cooler. A self-regulating cooler allows the transmission fluid to pass through it under cool operating temperatures so as to allow gear train lubrication while still providing maximum cooling efficiency under extremely hot operating conditions as well. A thermostatically controlled, fan-forced (reversible rotation), low pressure drop unit is the preferred choice when choosing an optimal transmission cooler for your vehicle. From the bone-chilling cold of Northern Alaska to the radiating heat of the Mohave Desert, this is the premier transmission cooler for any diesel application. Utilizing an ATS Diesel Extra Deep Transmission Pan coupled with an External Transmission Cooling System ensures that you have a fool-proof way of beating the heat.
Upgrading your Dodge Manual Transmission is a breeze. With the complete 5-Speed (NV-4500) or 6-Speed (NV-5600) Transmission, swapping out that weak stock unit is easy. All ATS Manual Transmissions are rebuilt with new heavy duty bearings, hardened shafts, and gears. Many areas of the transmission are strengthened and redesigned to increase reliability and durability. There are no worries about towing in overdrive with the redesigned high gear sets.

Also see our Performance Clutches.
ATS carries a full line of Performance Clutches for truck applications ranging from stock power for standard towing needs to extreme power for sled pulling and racing applications.

Intermediate Level Clutches include these features:

  • - All 7.3 clutch kits eliminate the unreliable Ford dual mass flywheel by using a solid performance flywheel. The large spring center clutch disk offers a smooth engagement and driveline protection.
  • - Organic-Feramic (OFE) Disk offers smooth engagement while being capable of handling some serious torque. This clutch is best suited for towing purposes. Good for power up to 450 HP / 1000 FP.
  • - Full Feramic (FE) Disks are for those looking for the ultimate in holding capacity with a single disk clutch. A great clutch for the hot-rod crowd, but not recommended for towing delicate loads. 550 HP / 1100 FP.

Extreme Level Clutches include the following features:

  • - Extreme level clutches can be built with a wide variety of clutch materials and pressure plates which allows for building anything from a mild street clutch to a "sled pulling" clutch.
  • - A new 13-inch Dual Disk Machined Billet Flywheel with a bronze/feramic inlay for greater holding capacity and the ability to rebuild the flywheel. Center Plates are cryogenically treated.