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6L90 Transmission Performance Parts

Circle D 6L90 transmission performance parts and rebuild kits are some of our most popular products. Our customers know that when they want to make 6L90 transmission upgrades, Circle D is their go-to source. We have a passion for what we do and we don’t sell any parts that we wouldn’t put in our own cars. This dedication to quality is why so many Houston-area car enthusiasts use Circle D for their transmission rebuilds.

CDT Level 2 6L90 Performance Parts & Kits
Rated up to 600 RWHP, HP ratings are contingent on numerous factors, such as tune, vehicle weight, power adder, use, etc. | Detailed Instructions Included | FREE UPS Domestic Ground Shipping
CDT Level 2.5 6L90 Performance Parts & Kits
Rated up to 750 RWHP, HP ratings are contingent on numerous factors, such as tune, vehicle weight, power adder, use, etc. | Detailed Instructions Included | FREE UPS Domestic Ground Shipping
CDT Level 3 6L90 Performance Parts & Kits
Rated up to 800 RWHP, HP ratings are contingent on numerous factors, such as tune, vehicle weight, power adder, use, etc. | Detailed Instructions Included | FREE UPS Domestic Ground Shipping
CDT Level 4 6L90 Performance Parts & Kits
Rated up to 1100 RWHP, HP ratings are contingent on numerous factors, such as tune, vehicle weight, power adder, use, etc. | Detailed Instructions Included | FREE UPS Domestic Ground Shipping | NO core required for output carrier