Yamaha TZR250RS (1992)

The Yamaha TZR 250R-SP is a 1992 motorcycle with a two-stroke, V-twin cylinder engine and a capacity of 249.7cc. Its compression ratio is 7.5:1, and it has a liquid cooling system and 2x Mikuni flatside carburetor induction. Its ignition is microcomputer controlled and it starts with a kick. The bike can reach a maximum power of 45hp at 9500rpm and torque of 3.8kgf-m at 8000rpm. Transmission is six-speed and final drive is through a chain. The suspension consists of 39mm upside-down forks at the front and monocross linkage at the rear. The brakes are two discs with four-piston calipers at the front and a single disc with a two-piston caliper at the rear. The front and rear tires measure 110/70 Z17 and 150/60 Z17 respectively. The bike measures 1960mm in length, 680mm in width, and 1075mm in height, and has a wheelbase of 1340mm and a dry weight of 126kg. Its fuel capacity is 15 litres and it can achieve a top speed of 180.2km/h. It was road tested by Motosprint in 1991 and Performance Bike in 1991.

Technical specifications:

Make Model: Yamaha TZR 250R-SP

Year: 1992
Engine: Two stroke, 90 degrees V-Twin cylinder, read valve induction
Capacity: 249.7 cc / 15.2 cu-in
Bore x Stroke: 56 x 50.7 mm
Cooling System: Liquid cooled
Compression Ratio: 7.5:1
Induction: 2x Mikuni flatside carburetor
Ignition: Microcomputer controlled
Starting: Kick
Max Power: 45 hp / 33.6 kW @ 9500 rpm
Max Torque: 3.8 kgf-m / 40 Nm @ 8000 rpm
Transmission: 6 Speed
Final Drive: Chain
Front Suspension: 39mm Upside-down forks
Rear Suspension: Monocross linkage
Front Brakes: 2X disc 4 piston calipers
Rear Brakes: Single disc 2 piston caliper
Front Tyre: 110/70 Z17
Rear Tyre: 150/60 Z17
Dimensions: Length 1960 mm / 77.1in Width 680 mm / 26.7 in Height 1075 mm / 42.3 in
Wheelbase: 1340 mm / 52.8 in
Seat Height: 780 mm / 30.7 in
Dry Weight: 126 kg / 277.8 lbs
Fuel Capacity: 15 Litres / 4.0 gal
Top Speed: 180.2 km/h / 112 mph
Road Test: Motosprint 1991 Performance Bike 1991