Shop Converters
Don't settle for anything less than the best – choose TRT for performance that never compromises.
Shop Valve Bodies
EXtreme Automatics is a Cincinnati based Vanguard business with decades of real world racing experience. They design, manufacture and test their own brand of innovative performance parts for domestic rear-wheel drive automatic transmissions.
Shop Converters
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TRT Street Plus Series 11" LS HD Torque Converter 4L60E/4L65E/4L70E
Regular price $669.00 USDRegular priceUnit price / per -
TRT Street Series 9.5” Non Lock-Up HD Torque Converter TH350/TH400
Regular price $569.00 USDRegular priceUnit price / per -
TRT Street Series 12” Torque Converter 700R4/4L60
Regular price $419.00 USDRegular priceUnit price / per -
9.5” Lock-up Torque Converter 4L80E
Regular price $559.00 USDRegular priceUnit price / per
Customer Reviews
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Jan Jenkins
"I run a custom TRT billet converter behind my 1200 horse N/A 632 big block chevy and am beyond happy and impressed with the performance and reliability it delivers without breaking a sweat! Thank you for a badass unit!"
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Patrick Parsons
“Just wanted to give a quick thanks. Picked this turbo 400 and converter combo up from you probably going on 2 years ago. Been street driven quite a bit, probably 60+ hits at the track. I changed the fluid and filter beginning of this season and that’s it. Never misses a beat and just wanted you to know that’s it’s workin! We literally haven’t even talked since I picked it up and that’s not a bad thing haha.”
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Montanna Robinson
"My 1998 turbo LS Trans Am supports a Turner built turbo 400 and converter. Mike and the guys at TRT have went above and beyond supporting my program getting me dialed in on the street and no prep surfaces. We had to pull the pan off of it after scraping it at KD motorsports park with over 75 passes on it and we couldn’t believe how good everything looks inside. Thank you TRT for building a quality unit."
Shop Valve Bodies
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Extreme Automatics 400 Tree Killer Transbrake Valve Body 1+2
Regular price From $715.00 USDRegular priceUnit price / per -
4L80E "Billet 80" Transbrake Valve Body 1+2
Regular price $915.00 USDRegular priceUnit price / per -
4L80E "Billet 80" Transbrake Valve Body
Regular price $915.00 USDRegular priceUnit price / per -
Extreme Automatics 4L80E "Billet 80" Reverse Manual Valve Body
Regular price $769.00 USDRegular priceUnit price / per