<br /> Upgrade your 6L80 transmission with this premium clutch kit, engineered for superior performance and long-lasting transmission durability. This heavy-duty kit features precision-machined 45-tooth 4-5-6 friction clutch plates that deliver 50% more surface area than the standard OEM clutch setup. The increased surface area results in improved transmission performance, enhanced torque handling, and better heat management under demanding driving conditions.<br /><br /> To utilize this upgraded 6L80 transmission clutch pack, you must use CDT’s Billet 4-5-6 Clutch Hub and Intermediate Shaft (CDT part number 104680-45-P), which are sold separately. These heavy-duty transmission parts are essential for proper fitment and maximizing the benefits of this performance upgrade. Please note: the billet clutch hub and intermediate shaft are not included in this kit.<br /><br /> Also included is the enhanced 3-5-R clutch pack, which provides 50% more clutch area than stock GM components, further boosting overall transmission durability and strength. Whether you’re building for towing, off-roading, or high-horsepower street use, this 6L80 transmission clutch kit offers the quality and reliability you need.<br /><br /> Perfect for GM vehicles equipped with the 6L80 transmission, this kit is designed for enthusiasts and builders who demand top-tier performance from their transmission parts. We stand behind our products and offer fast shipping so you can shop with confidence and keep your project moving forward.">
The CDT456L4/80-CM 4-5-6 Clutch Module delivers a heavy-duty upgrade for your 6L80 transmission, offering 50% more clutch apply area than the stock GM setup. This added surface area enhances transmission performance, increases torque capacity, and reduces heat buildup—making it ideal for demanding applications. Built with advanced G3® friction material, the module is engineered to resist wear and maintain strength under extreme conditions.
This high-performance 6L80 transmission clutch kit also includes Lindered steel plates for increased hardness and reduced wear, and Hi-Per Blue® Pistons made from durable AEM material for superior thermal and chemical resistance. For proper installation, CDT’s Billet 4-5-6 Clutch Hub and Intermediate Shaft (part number 104680-45-P) are required but sold separately. If you’re looking to improve transmission durability with quality transmission parts, this module is a top-tier choice. Shop now and enjoy fast shipping direct to your door.
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 CDT35RL4/80-CM 3-5-R Clutch Module is a powerful upgrade for the 6L80 transmission, offering 50% more clutch apply area than the OEM setup for significantly improved torque handling and transmission durability. Designed for high-demand environments, it features High Energy friction material that ensures consistent clutch engagement and withstands extreme thermal stress—perfect for heavy-duty or performance builds.
This 6L80 transmission clutch pack is built with Kolene® steel plates, which receive a specialized surface treatment to increase wear and fatigue resistance, extending the life of your transmission parts under pressure. For drivers seeking superior performance, heat resistance, and long-term reliability, the CDT35RL4/80-CM delivers the quality and strength you can count on. Shop now with fast shipping to keep your GM transmission running at its best.
6 Borg Warner® High Energy Clutches
6 Kolene® Steels (varying thicknesses)
1 Steel Plate
1 Apply Ring
1 Backing Plate
1 Snap Ring
The CDT26L4/80-CM 2-6 Clutch Module enhances 6L80 transmission performance by using Red Eagle® friction clutches, designed to reduce slip and shorten apply times. This results in faster, more responsive shifting while minimizing heat generation—crucial for improving transmission durability in high-stress applications.
Engineered for superior performance, this heavy-duty 6L80 transmission clutch pack helps reduce wear and thermal breakdown, making it ideal for towing, racing, and other performance builds. Whether you’re upgrading a daily driver or a high-power GM build, this module delivers the quality and reliability you need. Shop today and get fast shipping on trusted transmission parts that keep your drivetrain running strong.
5 Red Eagle® Externally Splined Clutches
5 Red Eagle® Internally Splined Clutches
1 Externally Splined Plate
1 Snap Ring
The CDT1234L4/80-CM 1-2-3-4 Clutch Module is engineered to enhance the core shift sequence of your 6L80 transmission, offering a heavy-duty solution for improved reliability and superior performance. Featuring precision-built friction clutches, this module reduces heat buildup and slippage under load, resulting in smoother transitions and extended transmission durability. Ideal for high-performance GM applications, this clutch upgrade is designed to keep up with the demands of aggressive driving, towing, or racing.
Whether you’re rebuilding or upgrading, this 6L80 transmission clutch module delivers the quality and performance your transmission deserves. Backed by trusted engineering and built to last, the CDT1234L4/80-CM is a smart investment in long-term transmission performance. Shop now to get premium transmission parts with fast, reliable shipping, and take the next step in building a more capable drivetrain.
5 High Energy® Clutches
5 Steels
1 Backing Plate
1 Snap Ring
1 Spiral Snap Ring
1 Snap Ring Kit
The CDTLRL4/80-CM Low-Reverse Clutch Module is designed to significantly improve the stability and control of your 6L80 transmission, especially during low-speed and reverse maneuvers. Built with high-performance friction clutch materials, this module reduces slippage and heat, delivering smoother engagement and enhanced transmission durability. Whether you’re navigating off-road terrain, towing, or driving in tight spaces, this heavy-duty clutch upgrade provides the reliability and performance you can trust.
Precision-engineered for GM vehicles, the CDTLRL4/80-CM is a vital upgrade for anyone seeking superior transmission performance and long-term dependability. It’s an ideal match for those looking to enhance the durability of their 6L80 transmission with high-quality transmission parts. Shop now and take advantage of our fast shipping to get your build back on the road with confidence and control.
5 High Energy® Clutches
5 Steels
Our Level 4 6L80 performance clutch modules offer up to 50% more clutch apply area than OEM parts, using premium friction materials like G3®, Red Eagle®, and High Energy®. This improves torque handling, reduces slippage, and significantly increases transmission durability under high-load or high-horsepower conditions.
Yes. To properly install the Level 4 4-5-6 clutch module, you must use CDT’s Billet 4-5-6 Clutch Hub and Intermediate Shaft (part number 104680-45-P). These billet parts ensure correct clearances and allow the upgraded clutch pack to operate at its full potential.
Absolutely. While this kit is designed for performance builds, it’s also ideal for towing, off-road, or high-mileage daily drivers looking for increased reliability and smoother shifts. The extra surface area and premium materials reduce heat buildup and wear over time.
CDT clutch modules are engineered with precise machining, premium friction and steel plates, and enhanced piston designs to outperform most aftermarket options. Our focus is on heat resistance, clutch engagement quality, and long-term reliability in high-demand environments.
These clutch modules are compatible with most GM vehicles equipped with the 6L80 transmission, including trucks, SUVs, and performance cars from 2006 and up. For specific fitment, always check your vehicle’s transmission code or contact CDT support for verification.
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.
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:
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.