4DHPClub Turbo spec Torque Converter for 6L80/6L90 Street/Strip

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Outside of continental USA and International Shipping must contact us prior to ordering. Sales@4DHPClub.com

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Circle D Specialties 258mm Pro-Series 3 disc lockup unit made to 4DHPClub Specifications and recommended for use on street/strip turbocharged applications around the 1,000whp mark with multiple stall speeds up to 3,700rpm.


This is a great starting point for any turbocharged GM vehicle using a 6L80 or 6L90 transmission, with awesome performance at the track, yet retaining great street manners and drivability for daily driver applications.  

Turbo Kit Upgrades

Turbo Kit Suggested Add-ons

Turbo Kit Comp Oil-Less Turbo Options


⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.

All parts & products are sold for off-road use only. By purchasing this product you acknowledging this as fact, and maintain all responsibility in its use otherwise. 

Some of our products are made to order, due to this shipping of those products may take upwards of 6 weeks or so. Please contact us if you have any concerns, or if you need something expedited. Sales@4DHPClub.com