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6L80 Performance Transmission 4-5-6 Clutch Kit - Level 3

Detailed Instructions Included | FREE UPS Ground to the contiguous United States (lower 48)

This transmission clutch kit is designed to work with 45-tooth 4-5-6 clutch plates, providing a 50% increase in surface area compared to a stock clutch setup. To use this clutch pack, the CDT Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-45-P) are required. Please note that the clutch hub and intermediate shaft are not included in this kit and must be purchased separately for proper installation and performance.
Availability: In stock
In stock items ship within 1-2 business days.
Picture for representation purposes only. Actual contents may vary as we continue to develop our products.
$425.00
SKU: CDT456L3/80-P

6L80 Level 3, 4-5-6 Transmission Clutch Kit for Maximum Performance

  • 7 G3® Clutches
  • 9 Lindered Steels (varying thicknesses)
  • 1 Stepped Apply Plate
  • 1 Wide Backing Plate
  • 1 Snap Ring
  • 2 Hi-Per Blue® Bonded Pistons

The 6L80 Level 3 4-5-6 Transmission Clutch Kit is engineered for high-performance vehicles, offering a 50% larger clutch apply area than a stock clutch setup. This kit is specifically designed to handle increased torque and heat, making it an ideal upgrade for those looking to enhance transmission durability and performance. Built with premium G3® friction materials, lindered steels, and Hi-Per Blue® bonded pistons, this clutch pack ensures smooth engagement, minimal wear, and superior heat resistance in demanding driving conditions.

Premium Clutch Components for Enhanced Durability

This transmission clutch kit includes seven G3® clutches, nine lindered steels (varying thicknesses), one stepped apply plate, one wide backing plate, one snap ring, and two Hi-Per Blue® bonded pistons. The G3® friction materials are formulated for maximum heat resistance and durability, helping to prevent excessive wear and clutch failure. The lindered steels undergo a chemical and heat treatment process to harden the steel, significantly reducing wear and extending the clutch’s lifespan. Additionally, the Hi-Per Blue® pistons are made with advanced AEM material, offering better thermal and chemical resistance while improving fit and overall performance.

Required Parts for Proper Installation

To use this clutch kit, the CDT Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-45-P) are required. These parts are not included in the kit and must be purchased separately to ensure proper fitment and functionality. The billet hub and intermediate shaft replace weaker stock components, preventing common failures such as spline shearing and clutch hub breakage. By combining this clutch kit with the necessary billet parts, you can optimize your transmission’s strength, reliability, and performance, whether on the street or track.

Frequently Asked Questions

What makes the 6L80 Level 3 clutch kit ideal for high-performance vehicles?

The 6L80 Level 3 4-5-6 clutch kit offers 50% more clutch apply area than stock setups, providing better heat resistance and durability for vehicles with increased power and torque demands.

Do I need any additional components for the 6L80 clutch kit?

Yes, this kit requires the CDT Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-45-P), which must be purchased separately to ensure proper installation and optimal performance.

How do the G3® clutches in this kit improve performance?

The G3® clutches are designed to maximize heat resistance and reduce wear, ensuring smoother shifts and increased clutch life under extreme driving conditions.

What is the benefit of the lindered steels in this kit?

The lindered steels are treated with a chemical and heat process that hardens the steel, significantly reducing wear and extending the lifespan of your clutch, especially in high-performance applications.

Can this clutch kit be used in daily driver vehicles?

While this kit is designed for high-performance and racing applications, it can be used in daily driver vehicles, but it is optimized for vehicles with higher torque and power requirements.

transmission specs worksheet

Recommended Transmission Tools

  • Transmission holding fixture
  • Calipers
  • Dial Indicator Set
  • Bushing Drivers & Arbor Press for Bushing Installation (Bushings should only be replaced as needed)
  • Sealing Ring Protector and Sizer
  • Various Clutch Spring Compressors
  • Output Carrier/Shaft Lifting Tool
  • 1-2-3-4 & 3-5-R Clutch Housing Installer
  • Large Snap-Ring Pliers
  • Pump Alignment Tool

Misc. Transmission Information

Upgraded Parts: If you have an early pump cover (stator) that does not utilize anti-rotational tabs on the sealing rings or an early 1-2-3-4/3-5-R clutch housing that does not have the matrix stamp, you will need to install a factory-upgraded pump cover and clutch housing.

Transmission Tuning: Please understand that proper tuning of the TCM and ECM is mandatory. All 6L80/90’s are torque-based shifted units. The torque signal is calculated through the ECM. Therefore, transmission performance and longevity are directly dependent on the delivered torque signal that’s calculated in the ECM. If this is not done properly, you will experience premature transmission failure. We also do not recommend maxing out pressures or deleting torque management completely because it will cause seal failure and/or hard part breakage.

Flushing Cooler & Lines: We cannot stress enough the importance of flushing the transmission cooler(s) and lines, even if they are new. We recommend using a Hot Flush Machine Flush Machine or something comparable.                                      

Auxiliary Cooler: You need to install a stacked plate auxiliary transmission cooler (not a tube and fin style cooler) rated for 25,000 GVW. The ideal operating temperature for this transmission is 180°or less. These transmissions tend to run very hot, so the cooler will lower the operating temperature and recovery time, which in turn will extend the life of your transmission.

Transmission Rebuild Kit Warranty

Limited Warranty Statement

Circle D's Transmission Rebuild Kits carry a 1 year, parts-only warranty, exclusively against manufacturer’s defects. The warranty period begins at the date of purchase. There is no warranty under the conditions listed below. This includes, but is not limited to:

  • Improperly Stored
  • Improperly Installed
  • Improperly Tuned (EMC or TCM)
  • Misapplication
  • Altered, either by Owner or Their Technician
  • Torque Converter Failure
  • Inadequate Flushing of Transmission Cooler
  • Improper Fluid Level
  • Water/Engine Coolant in Transmission
  • Excessive Power
  • Accident
  • Neglect

Circle D Transmission will not pay for any fluids replaced in the event of a rebuild kit failure.

Under no circumstances shall there be any labor warranty or other warranty coverage on Circle D Transmission Kits beyond the replacement of individual rebuild kit components. We will not provide you with any cash refund except as may be required by law. Consequential and incidental damages are not recoverable under this warranty and are expressly excluded.

There is no warranty on broken parts such as, but not limited to, twisted splines, broken shafts, or broken planetaries.

Warranty issues will be considered on an individual basis.