The John Deere 9660STS combines are one of the first in line in the Single Tine-Separation system series from John Deere. The Bullet Rotor technology makes for a smoother and free-flowing crop stream. The John Deere technology gives higher ground speeds and increased throughput capacity. The system on the John Deere 9660 combine also insures a reduction in the rotor load and the in the engine power requirements. This keeps maintenance and operating costs down and insures a great resale value. It also makes the entire threshing and separating system more efficient and productive. The 9660 combine is a powerful harvesting machine that offers great yield and production.