Kenworth will offer Allison’s TC10(R) fully automatic transmission as an option on its T680 on-highway and T880 vocational model tractors. It provides 10 forward and two reverse speeds. A torque converter and twin countershaft gearbox are designed to optimize acceleration while improving fuel economy through engine down-speeding and uninterrupted power shifting in all ranges. The transmission is integrated with multiple engine offerings and for applications requiring torque up to 1,850 ft-lbs and up to 110,000 GCW. www.kenworth.com.