6L80 Performance Transmission Rebuild Kit - Level 2
Rated up to 550 RWHP, HP ratings are contingent on numerous factors, such as tune, vehicle weight, power adder, use, etc. | Detailed Instructions Included | FREE UPS Ground to the contiguous United States (lower 48)
This 6L80 transmission rebuild kit is designed with stock dimension 36-tooth 4-5-6 clutch plates and will work with the OE intermediate 4-5-6 clutch hub. The 4-5-6 clutch pack provides 17% more surface area than a stock clutch set up. The 3-5-R clutch rebuild kit offers 25% more clutch area than stock.
At Circle D Transmission, we offer high-quality rebuild kits designed to enhance the performance of your vehicle’s transmission. Our rebuild kits include precision components engineered for durability and optimized performance, ensuring your transmission operates at its best, whether on the road, off road, or on the track. Upgrade with confidence and experience the difference a Circle D rebuild kit can make!
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.
CDT456L2/80 (4-5-6 CLUTCH KIT)
- 7 Borg Warner® Clutches
- 6 Lindered Steel Plates
- 1 Apply Plate
- 1 Backing Plate
- 1 Snap Ring
- 2 Bonded Pistons
CDT456L2/80 offers 17% more clutch apply area than stock. This clutch kit works with the OE intermediate 4-5-6 clutch hub. Lindered is a chemical and heat treatment process that hardens the steel, which results in less wear.
CDT35RL2/80 (3-5-R CLUTCH KIT)
- 5 Borg Warner® High Energy Clutches
- 6 Kolene® Steels (varying thickness)
- 1 Backing Plate
- 1 Snap Ring
CDT35RL2/80 offers 25% more clutch apply area than stock. High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Kolene steels provide a surface treatment that enhances wear and fatigue resistance.
CDT26L2/80 (2-6 CLUTCH KIT)
- 5 Borg Warner® Clutches
- 5 Steels
- 1 Snap Ring
- 1 Hi-Per Blue® Bonded Piston
Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
CDT1234L2/80 (1-2-3-4 CLUTCH KIT)
- 5 High Energy® Clutches
- 5 Steels
- 1 Snap Ring
- 1 Spiral Snap Ring
- 1 Snap Ring Kit
- 1 Hi-Per Blue® Bonded Piston
High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
CDTLRL2/80 (LOW-REVERSE CLUTCH KIT)
- 5 High Energy® Clutches
- 5 Steels
- 1 Hi-Per Blue® Bonded Piston
High Energy material maintains consistent frictional behavior and tolerates extreme thermal stress applications. Hi-Per Blue® Pistons are manufactured with upgraded High-Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.
CDTVBPKL2/80-90 (VALVE BODY & PUMP KIT)
- 1 Center Support Seal Kit
- 1 Pressure Regulator Valve Kit
- 1 Line Pressure Booster Kit
- 1 O-ringed End Plug Kit
- 1 Pump Slide Spring
CDTMKL2/80 (MASTER KIT)
- 1 High-Performance Overhaul Kit engineered utilizing premium materials for racing.
- 1 Bonded OE Valve Body Plate
- 1 Bushing Kit (includes extension housing bushings)
- 1 Pan Gasket
- 1 Filter
- 1 Oversized Pump Washer
We do not include welded hubs in this rebuild kit. At the beginning of R&D on this transmission, we thought this area needed strengthening. However, we've never seen one broken in all the units we've rebuilt. Therefore, we deemed it unnecessary. Also, we do not include a billet pump rotor because the factory pump rotor has proven itself reliable (we have never seen one broken), unlike the 4L60E.
