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6L90 Performance Transmission Rebuild Kit - CDT Level 4

Rated up to 1100 RWHP | Detailed Instructions Included | $300 refund issued after we receive & accept your output carrier core | FREE UPS Domestic Ground Shipping | Signature Required for Delivery
Availability: In stock
All in stock items ship same day if the order is received by noon, CST. All orders placed on weekends and holidays will ship the following business day.

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$3,790.00
SKU: CDTL4PK/90

 

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

 

6L90 CDT-BROC (4140 HTSR Billet Reinforced Output Carrier)

This part is designed for vehicles producing over 750 RWHP, Nitrous or Heavy Vehicles (including trucks, SUV's and CTS-V's).
It is a drop in part for easy installation.
4140 billet steel drive plate to strengthen the spline area.
The drive plate is milled and contoured to the planetary housing to eliminate any possible separation under a load.
*Output Carrier Core must be returned to CDT in acceptable condition within 30 days of purchase date to receive $300 refund - customer is responsible for return shipping.

CDT456L3-4/90 (4-5-6 CLUTCH KIT)
8 G3® Clutches
9 Lindered Steels (varying thicknesses)
1 Stepped Apply Plate
1 Wide Backing Plate
1 Snap Ring
2 Hi-Per Blue® Bonded Pistons

CDT456L3-4/90 offers 45% more clutch apply area than stock. G3® friction material is formulated to achieve minimal wear and maximize heat resistance. Lindured is a chemical and heat treatment process that hardens the steel, which results in less wear. Hi-Per Blue® Pistons are manufactured with upgraded High Performance Blue AEM material for superior thermal and chemical resistance, with better fit and performance.

CDTBISH/90 (BILLET INTERMEDIATE SHAFT & 4-5-6 CLUTCH HUB)
Billet Intermediate Shaft is precision machined from 300 Maraging alloy steel & heat treated for additional strength & durability. The shaft is manufactured according to CDT Specs to address the weaknesses in the stock shaft. Billet 4-5-6 Clutch Hub is made from 4140HTSR billet steel. The hub is manufactured according to CDT Specs to address the weaknesses in the stock hub and to also improve lubrication.

CDT35RL3-4/90 (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

CDT35RL3-4/90 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.

CDT26L2-3-4/90 (2-6 CLUTCH KIT)
7 Red Eagle® Externally Splined Clutches
6 Red Eagle® Internally Splined Clutches
1 Externally Splined Steel Plate
1 Hi-Per Blue® Bonded Piston

Red Eagle® Clutches are designed to limit the amount of slip providing a shorter apply time, generating less heat. Hi-Per Blue® Pistons are manufactured with upgraded High Performance Blue AEM material for superior thermal and chemical resistance with better fit and performance.

CDT1234L3-4/90 (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.

CDTLRL2-3-4/90 (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.

CDTVBPKL3-4/80-90 (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

CDTMKL2-3-4/90 (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.