Gale Banks Engineering manufactures high performance gas and diesel exhaust systems. Add horsepower and fuel economy to your Chevy GMC diesel with a Banks exhaust kit. When "opening" up your airflow with a larger diameter Banks performance exhaust, you are helping to lower exhaust gas temperatures (EGT's). Gale Banks has a full line of diesel performance exhausts for Chevy GMC Duramax, 6.5L and even the 6.2L. If you would like help finding the best Gale Banks performance exhaust for you or if you do not see a listing for your Chevy GMC please call us at 1-800-823-4444.