| MODEL | YAMAHA TZR 125 1989 - 1990 |
| Year | 1989 - 1990 |
| Engine Type | Two stroke, single cylinder, reed valve |
| Displacement / Capacity | 124 cc / 7.6 cu in |
| Bore X Stroke | 56.4 x 50 mm |
| Compression Ratio | 5.9:1 |
| Cooling System | Liquid cooled |
| Max Power | 30 hp @ 11000 rpm |
| Max Torque | 1.8 kgf-m / 13 lb-ft @ 10000 rpm |
| Ignition | CDI |
| Induction | Mikuni VM26SS carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | Wet plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 39 mm upside-down forks, 120 mm / 4.5 in travel |
| Rear Suspension | Monoshock, adjustable preload |
| Front Brakes | Single disc, 4 piston caliper |
| Rear Brakes | Single disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 121 kg / 266.7 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 110/70-17 |
| Rear Tyre | 140/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 3.1 US gal |
| Fuel Consumption | — |
| Top Speed | — |
Listed for 1989-90, this row describes a 125 cc TZR with upside-down forks, a four-piston front caliper and a rear disc, styled like the larger FZR. A 1990 test praised its lively top end and rear shock but complained of vibration, a clunky gearbox, weak low-rev response and a loud exhaust. It was priced as the cheapest race-replica 125 of its day.
