The Yamaha TZR 250 is a 1987 two stroke motorcycle with a 249cc engine and parallel twin cylinders. It has a liquid cooling system, 2x Mikuni TM28SS carburetors, and a CDI ignition system. The max power is 50 hp at 10,000 rpm and max torque is 35.5 Nm at 9750 rpm. The transmission is 6-speed with a chain final drive. The front suspension is telescopic with adjustable preload and the rear suspension is coil and gas spring with 9-way preload position. The front brakes are single 320mm discs with 2 piston calipers and the rear brakes are a single 210mm disc with 1 piston caliper. The dimensions are length 2005mm, width 660mm, and wheelbase of 1375mm with a seat height of 760mm. The dry weight is 128kg and wet weight is 140kg with a fuel capacity of 16 liters. The road test was conducted by Motociclismo in 1987 and was part of a group test by Bike magazine in the same year.
Technical specifications:
Make Model: Yamaha TZR 250
| Year | 1987 |
|---|---|
| Engine | Two stroke, parallel twin cylinders, read valve, |
| Capacity | 249 cc / 15.2 cu-in |
| Bore x Stroke | 56.4 x 50 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 5.9:1 |
| Induction | 2x Mikuni TM28SS carburetor |
| Ignition | CDI |
| Starting | Kick |
| Max Power | 50 hp / 36.4 kW @ 10000 rpm |
| Max Torque | 35.5 Nm / 26.2 lb-ft @ 9750 rpm |
| Transmission | 6 speed |
| Final Drive | Chain |
| Front Suspension | Telescopic fork adjustable preload |
| Front Wheel Travel | 140 mm / 5.5 in |
| Rear Suspension | Coil and gas spring preload 9-way preload position |
| Rear Wheel Travel | 100 m / 3.9 in |
| Front Brakes | Single 320mm discs 2 piston calipers |
| Rear Brakes | Single 210mm disc 1 piston caliper |
| Front Tyre | 100/80-17 |
| Rear Tyre | 120/80-17 |
| Dimensions | Length 2005 mm / 78.9 in Width 660 mm / 25.9 in |
| Wheelbase | 1375 mm / 54.1 in |
| Seat Height | 760 mm / 29.9in |
| Dry Weight | 128 kg / 282.1 lbs |
| Wet Weight | 140 kg / 308.6 lbs |
| Fuel Capacity | 16 Litres / 4.2 US gal |
| Road Test | Motociclismo 1987 Bike magazine Group test 1987 |
