The Yamaha TZR125 Naked motorcycle was produced from 1990-91 and had a two-stroke, single-cylinder, reed-valve engine with a capacity of 124cc. It was liquid-cooled with a Mikuni VM26SS carburetor and had CDI ignition. It could generate a maximum power of 26hp at 10200 rpm and maximum torque of 1.8kgf-m at 10000 rpm with a compression ratio of 5.9:1. The clutch was wet plate and had a 6-speed transmission with chain final drive. The front suspension was a telescopic fork with 140mm wheel travel and the rear suspension was monocross with 100mm wheel travel. The front brake was a single disc and the rear brake was drum, with front and rear tires measuring 90/90-16 and 100/90-18 respectively. It had a dry weight of 104kg and wet weight of 122.7kg, with a fuel capacity of 12 liters and average fuel consumption of 21.5km/lit. Braking from 60-0/100-0 had a distance of 13.8m/39.6m and could reach a top speed of 154.7km/h with standing 1/4 mile time of 15.8 seconds at 130.6km/h.
Technical specifications:
Make Model: Yamaha TZR 125 Naked
| Year | 1990 – 91 |
|---|---|
| Engine | Two stroke, single cylinder, read valve, |
| Capacity | 124 cc / 7.6 cu-in |
| Bore x Stroke | 56.4 x 50 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 5.9:1 |
| Induction | Mikuni VM26SS carburetor |
| Ignition | CDI |
| Starting | |
| Max Power | 26.hp / 19.3 kW @ 10200 rpm |
| Max Torque | 1.8 kgf-m / 13 lb-ft @ 10000 rpm |
| Clutch | Wet Plate |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic fork |
| Front Wheel Travel | 140 mm / 5.5 in |
| Rear Suspension | Monocross |
| Rear Wheel Travel | 100 mm / 3.9 in |
| Front Brakes | Single disc |
| Rear Brakes | Drum |
| Front Tyre | 90/90 16 |
| Rear Tyre | 100/90 18 |
| Dry Weight | 104 kg / 229 lbs |
| Wet Weight | 122.7 kg / 269 lbs |
| Fuel Capacity | 12 Litres / 3.1 US gal |
| Consumption Average | 21.5 km/lit |
| Braking 60 – 0 / 100 – 0 | 13.8 m / 39.6 m |
| Standing 1/4 Mile | 15.8 sec / 130.6 km/h |
| Top Speed | 154.7 km/h |
