ZF AS Tronic

ZF AS Tronic is an automated manual transmission made by ZF Friedrichshafen for the motorcoach and lorry market in Europe and North America which was first introduced in 2003. As a part of manual transmission, it lacks the torque converter that is standard on automatic transmissions-an AS Tronic has been quoted as being 500 pounds less than the B500. Some coach operators are choosing this transmission for better fuel economy over automatics.

This transmission is offered as 6-speed (called AS Tronic Lite by ZF), 10-speed 12-speed or 16-speed transmission.