Welcome to
High Performance
Torque Converter
The Sonnax line of high performance torque converter products includes a complete selection of racekits and components for most popular applications. Our products feature both hard-to-find OEM replacement parts as well as innovative components that have been engineered for improved performance and greater durability. The heart of the Sonnax racekits is a high-quality, forged steel front cover that prevents ballooning and cracking common to other covers. Most of our racekits are designed to use the small diameter GM 245mm (9-1/2") cores, providing higher stall speeds and increased efficiency.
