Duncan Racing International

Specialties

Complete Engine Rebuilding, 2 Stroke & 4 Stroke Porting, Serdi Valve Seat Machining, Cylinder Boring/​Resleeving, Crankshaft Rebuilds, High Performance Engine Kits; 2 Stroke & 4 Stroke, Dyno Tuning And Testing

History

Established in 1977.

Thank you for considering Duncan Racing International, Inc. for your high performance ATV requirements. Since our first day in business, Duncan Racing has been committed to offering the finest high performance ATV products and services in the Industry. With a specific focus on; Power, Reliability and Value. DRI is known worldwide for racing ATV’s. We have won more races and championships in more countries than any other company. But even though we place a premium on ATV racing of all types, almost half our clients are recreational riders. Racing in controlled environments with skilled riders yields consistent performance gains and rapid research and development. These priceless benefits allow DRI to offer the finest engine products and services for the racer and the recreational enthusiast. At DRI we pledge to not rest on our 35 years of previous success, but to work hard and focus on giving

Meet the Business Owner

Loren D.

Business Owner

Duncan Racing was founded in 1977 in Santee, California by Danny R. Duncan under the name of Danny’s Machine Works. In mid 1986 the company changed it’s name. Loren Duncan, Danny’s oldest son, took over the reins and changed the name to Duncan Racing International. In late 1986 Loren hooked up with former Team Honda Factory rider Marty Hart doing all of his mechanical work for the balance of his ATV racing career. Through Marty, Loren met and became business partners with Paul Turner the founder of Paul Turner Racing Engines and engine builder for Team Honda. Since 1989 Duncan Racing has owned all PTR products and has designed and manufactured all ATV related items. The decade of the 90’s let Duncan Racing establish itself as the premier hi-​performance ATV Company in the industry. Winning more Pro ATV races worldwide than any other company.