Our mission is to make exceptional torque converters while providing unparalleled knowledge and outstanding customer service. We are driven to continually improve and raise the bar with our products, relentlessly pursuing perfection. We are a team, we are family, we are Circle D Specialties. Our performance moves us.
Our state-of-the-art torque converter technology & manufacturing facility allows us to take purpose-built drag racing torque converters to previously unheard-of levels of performance — and that technology trickles down into our products for the street car enthusiast as well. Everything happens right here in-house at our Houston, Texas facility.
Fluid flow is mapped in computational fluid dynamics software before any metal moves.
Every component is modeled and engineered in 3D before it is ever cut.
Billet components, machined in-house to exact tolerances.
Comprehensive data analysis lets us custom-tailor and perfect each converter to the highest degree.
10R80 Pro Series — component stack
Facility overview — Houston, TX
Let's talk about torque converter clutch drag when using a multi disc torque converter in a 4L80E transmission. We see this issue come up from time to time, especially (but not limited to) in 4L80E applications equipped with a transbrake...
Today we're diving in to the often debated & sometimes mysterious topic of single disc vs. multi disc lock-up torque converters for use in common OEM-based overdrive transmissions. To begin, we need to understand the purpose of a torque...
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Check Order Status Live build stage and production date — instantly Estimated Build Time Current lead times, and what moves them Converter Service & Repair Start a service request and get an RMA Custom Converter Spec Tell us the build and we will spec it Shipping & Lead Times What to expect, and how we shipQuick Answers
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