Suzuki has a new single out next year. The engine differs from the GZ by being FI.
http://www.suzukicycles.com/Products/TU250XK9Specs
Engine: 249cc, 4-stroke, single-cylinder, Air-cooled, SOHC
Bore Stroke: 72.0mm X 61.2mm
Compression Ratio: 9.2:1
Fuel System: Fuel injection
Lubrication: Wet sump
Ignition: Electronic ignition (fully transistorized)
Transmission: 5-speed constant mesh
Final Drive: N/A
Overall Length: 2070 mm
Overall Width: 750 mm
Overall Height: 1075 mm
Seat Height: 770 mm
Ground Clearance: N/A
Wheelbase: 1375 mm
Curb Weight: 149 kg
Suspension Front: Telescopic, coil spring, oil damped
Suspension Rear: Swing-arm type, coil spring, oil damped
Brakes Front: Hydraulic disk
Brakes Rear: Leading-trailing
Tires Front: 90/90-18M/C 51S
Tires Rear: 110/90-18M/C 61S
Fuel Tank Capacity: 12L
Color: Red