Founded in 2004, Tauer Machine LLC., manufactures primary drives for Harley Davidson' and custom motorcycles. We at TM produce our own pulleys and clutches to our high standards. The pulleys are made from BILLET aluminum with Kevlar clutch Fibers. These high quality components provide years of performance and ARE MADE WITH PRIDE IN THE USA. We support American Jobs and Amercian Technology. We at TM also have a patented primary drive integrated oil cooler which is PROVEN to reduce the engine oil temperatures by about 25-35 degrees Farenheit. All big inch motors need an oil cooler and with TM's unique design, the oil cooler is completely hidden in the outer primary cover, eliminating the need for an ugly, frame mounted oil cooler. All TM products are designed "top of the line" for fit, funtion, reliability and performance. Great pride and care are taken in all components from the structual integrity of the motor plates to the BILLET Alumimum pulleys and clutch assemblies. We only build the best quality components for years of reliability. Our mission is design products that are more Technologically innovative in function and form to offer styling and performance. Our clutches are engineered to handle the biggest motors on the market. To boot we provide the best customer support of our products and have trained technical support to answer your questions. Everyday we compete against ourselves to provide you the best components and will never sacrifice to give you less than the best. We at TM believe reputation is built on giving the best overvall value.