Yamaha TZR125 ( 1990-91)

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