6L90 Performance Transmission Rebuild Kit - CDT Level 2.5

Picture for representation purposes only - actual contents may vary as we continue to develop our product.

CDT456L2.5/90 (4-5-6 CLUTCH KIT)
8  G3® Clutches
7  Lindered Steels 
1  Stepped Apply Plate
1  Wide Backing Plate
1  Snap Ring
2  Hi-Per Blue® Bonded Pistons

CDT456L2.5/90.1 offers 17% more clutch apply area than stock. G3® friction material is formulated to achieve minimal wear & maximize heat resistance. Kolene® Steels provide a surface treatment the enhances wear & fatigue resistance.

104690-36 (BILLET INTERMEDIATE SHAFT & 4-5-6 CLUTCH HUB) One piece 300M steel forging is heat-treated and shot-peened for maximum durability. This shaft doubles oil flow to the clutch pack for improved resistance to heat and longer clutch life. It is designed for use with the OE dampener to minimize risk of chirp/squawk. The hub is designed for OE steels and clutches. 

CDT35RL2.5/90 (3-5-R CLUTCH KIT)
7 G3® Keyhole Clutches
7 Kolene® Steels (varying thicknesses)
1 Steel Plate
1 Apply Ring
1 Backing Plate
1 Snap Ring

CDT35RL2.5/90 offers 40% more clutch apply area than stock. G3® friction material is formulated to achieve minimal wear & maximize heat resistance. Keyhole Clutch design allows a significant amount of ATF to escape out of the O/D and I/D channels to improve clutch engagement. The pooling of ATF in the slot and hole separates the friction and steels when the clutch is disengaged reducing parasitic drag and heat build-up. Kolene® Steels provide a surface treatment the enhances wear & fatigue resistance.

CDT26L2.5/90 (2-6 CLUTCH KIT)
6 Borg Warner Clutches                                            
6 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.

CDT1234L2.5/90 (1-2-3-4 CLUTCH KIT)
6 High Energy® Clutches
6 Steels
1 Backing Plate
1 Snap Ring
1 Spiral Snap Ring
1 Snap Ring Kit
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.

CDTLRL2.5/90 (LOW-REVERSE CLUTCH KIT)
6 High Energy® Clutches
6 Steels
1 Hi-Per Blue® Apply 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.

CDTVBPKL2.5/80-90 (VALVE BODY & PUMP KIT)
2 Boost Valve Springs
2 Clutch Regulator Valve Springs
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

CDTMKL2.5/90 (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 Kit. In the beginning of R&D on this transmission we thought this area needing strengthening. However, in all the units that we've rebuilt we've NEVER seen one broken. 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.

PLEASE NOTE: GM has a transmission that has the same outside dimensions as a 6L90 but uses one less clutch in all the clutch housings compared to a true 6L90. We call this transmission a 6L90LCC (less clutch capacity.) We also sell a performance kit that accommodates this transmission or we offer a combination kit that works for the 6L90 or 6L90LCC. Please refer to "Stock Clutch Capacity Chart" and "Length of Main Case Chart" on the "Transmission Specs" tab below to determine if you have a 6L90 or 6L90LCC.

We recommend the Billet Reinforced Output Carrier for vehicles producing over 750 RWHP, Nitrous or Heavy Vehicles (including trucks, SUV's and CTS-V's.) Note: We have seen the stock output carrier (planetary) break in vehicles with less than 750 RWHP. We do not warranty the stock output carrier (planetary.) We highly recommend that you purchase the billet reinforced output carrier. We offer a 6L90 Level 4 Kit that includes this part.