Oregon Performance Transmission has been providing quality parts and services to professionals, enthusiasts and the week-end mechanic since 2000. We take pride in providing the most complete catalog of transmission parts on the web. At Oregon Performance Transmission, we are constantly adding new items from such companies as Hayden, Alto, ATSG, Transgo, Sonnax, Superior / Fairbanks, Tru-Cool, and many others. OPT not only has a full range of high performance rebuild parts like a billet servo, boost valve, or high stall torque converter, but a huge selection of stock rebuild parts for almost every make of automatic transmission. If you don’t see something you are looking for, please ask.