The Roper GTK18 is a 1988 garden tractor manufactured by Roper. It features an 18HP Kohler M18 691cc 2-cylinder air-cooled gasoline engine with electric start. The tractor has a belt-driven 6-speed gear transmission with 6 forward and 2 reverse gears. It is two-wheel drive with manual steering and an open operator station. Tires are sized 16x6.5-8 front and 23x10.5-12 rear. Attachments include a 50" mid-mount mower deck with 3 blades. Electrical system is 12 volts with negative ground. Original price was $2,700 in 1988.