<br />The required 36-tooth clutch plates are not included with this product.">
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The 6L80 Level 2.5 billet shaft hub is engineered for superior performance and durability, making it an essential component for your transmission rebuild. Crafted from a single piece of 300M steel, the hub is heat-treated and shot-peened to maximize strength and longevity. By doubling oil flow to the clutch pack, this innovative design reduces wear and improves resistance to heat, ensuring longer clutch life and consistent results.
This rebuild kit is specifically designed for use with OE steels and clutches, delivering seamless compatibility and optimal performance. The hub’s compatibility with the OE dampener minimizes the risk of chirping or squawking, making it a reliable choice for any vehicle undergoing a high-performance upgrade. Note that the required 36-tooth clutch plates are not included in this kit and must be purchased separately.
The 6L80 level 2.5 Billet Shaft Hub is designed to meet the demands of drivers who prioritize performance, reliability, and durability. Whether you’re upgrading your transmission for better handling, increased power, or long-term dependability, this hub is a dependable choice for your build.
With its high-quality construction and focus on performance, this hub ensures your vehicle operates at its best under a variety of conditions. Ideal for a wide range of applications, it seamlessly integrates into your transmission rebuild to deliver the results you need.
At Circle D Transmission, we’re proud to offer industry-leading transmission parts and kits designed to help you achieve your goals. From performance upgrades to complete rebuilds, our products are made with precision and care. If you have questions or need assistance, our knowledgeable team is here to support you. Explore our products and get started on your next upgrade with confidence.
It is designed for vehicles with a 6L80 transmission and is compatible with OE steels and clutches.
No, the 36-tooth clutch plates are sold separately and are required for proper installation.
Yes, it is engineered for performance upgrades, making it ideal for demanding applications like racing or towing.
Yes, professional installation is recommended to ensure optimal fit and results.
You can shop for compatible clutch plates and additional parts directly from our website.
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.