Yamaha TZ 125 - 2002 Specifications and Reviews

The 2002 Yamaha TZ 125 is a lightweight sport bike designed for novice and younger riders seeking an accessible entry point into sportbike riding. Powered by a nimble liquid-cooled single-cylinder engine producing 44 horsepower, it excels in agility and maneuverability around tight circuits and urban environments. Best known for its affordable performance and low seat height, the TZ 125 remains a popular choice for racing school training and first-time sportbike enthusiasts.

2002
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General information

CategorySport
Year2002
ModelYamaha TZ 125

Engine and Transmission Specifications

Cooling systemLiquid
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression7.9:1
Torque25.00
Power44.00
Stroke2
Engine typeSingle cylinder
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,242 mm (48.9 inches)
Ground clearance110 mm (4.3 inches)
Overall width510 mm (20.1 inches)
Overall length1,828 mm (72.0 inches)
Overall height1,033 mm (40.7 inches)
Seat height701 mm (27.6 inches) If adjustable, lowest setting.
Dry weight71.2 kg (157.0 pounds)

Yamaha TZ 125 dimensions and frame

Rear brakes diameter185 mm (7.3 inches)
Rear brakesSingle disc
Front brakes diameter298 mm (11.7 inches)
Front brakesSingle disc
Rear tyre dimensions125/55-R17
Front tyre dimensions95/70-R17
Rear suspension travel129 mm (5.1 inches)
Front suspension travel100 mm (3.9 inches)

Speed and acceleration

Power/weight ratio0.6180 HP/kg
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

44 hp
Peak Power
4.2s
0-60 mph

Best For

Track98%
City5%
Cornering98%
Daily Riding3%
Touring3%
Passenger0%

Rider Profile

Best ForThis is a pure racing machine built for experienced racers, not a bike for beginners or casual riders.
PurposePurpose-built grand prix style road racer intended exclusively for closed-circuit competition.
Rider FitDemands an aggressive, committed racing riding position with weight on the wrists and legs tucked tightly, tolerable only for short, intense stints.
CharacterAn extremely light, high-revving two-stroke racer with a phenomenal power-to-weight ratio that rewards precise, aggressive riding.
Not Ideal ForNot suitable for street use, commuting, touring, passengers, or anyone seeking comfort or practicality.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2002 Yamaha TZ 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 701mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2002 Yamaha TZ 125, with a cramped knee angle of around 60 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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