Circle D Specialties
Circle D Specialties
Circle D Specialties is a premier manufacturer of high-performance torque converters and heavy-duty drivetrain components designed to handle extreme torque loads on both the street and the strip. Specializing in custom and direct-fit upgrades, they offer precision-engineered HP and Pro Series converters for a wide range of modern and classic transmissions, including GM's 4L60, 4L80, 6L80, 8L90, and 10L80, as well as popular Ford and Dodge applications. With customizable options ranging from affordable stamped-front factory replacements to extreme-duty billet front covers and triple-disk lockup assemblies, Circle D provides the exact stall speed and structural integrity required for naturally aspirated, turbocharged, or supercharged builds. Whether you need a rugged billet flexplate for a Gen-V LT or a competition-ready converter for explosive off-the-line acceleration, Circle D Specialties delivers unshakeable reliability and dominant track performance.
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