Yamaha YZF-R125 - 2021 Specifications and Reviews

The 2021 Yamaha YZF-R125 is an entry-level sport bike designed for new and young riders seeking an affordable, nimble machine. Its 125cc single-cylinder engine delivers manageable power while maintaining the aggressive styling of Yamaha's YZF family. Known for reliability and ease of handling, it's ideal for learners progressing to sport riding.

Not Rated stars Average rating: Not Rated from 0 votes
.

General information

CategorySport
Year2021
ModelYamaha YZF-R125

Engine and Transmission Specifications

Emission detailsEuro 5
Greenhouse gases49.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption2.13 litres/100 km (46.9 km/l or 110.43 mpg)
DrivelineConstant Mesh
ClutchAssist and Slipper clutch
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionTCI
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection. EFI
Valves per Cylinder4
Bore x Stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Compression11.2:1
Torque11.5 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 8000 RPM
Power15.0 HP (10.9 kW) @ 9000 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.7 ccm (7.61 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter292 mm (11.5 inches)
Front brakesSingle disc
Rear tire140/70-17
Front tire100/80-17
Rear wheel travel114 mm (4.5 inches)
Rear SuspensionLinked monoshock with spring preload adjustment
Front wheel travel130 mm (5.1 inches)
Front SuspensionUpside-down telescopic fork, Ø 41 mm
Trail89 mm (3.5 inches)
Rake (fork angle)25.0°
Frame typeCompact deltabox
 
 

Physical measures and capacities

Oil capacity1.20 litres (1.27 US quarts)
Fuel capacity11.50 litres (3.04 US gallons)
Wheelbase1355 mm (53.3 inches)
Ground clearance155 mm (6.1 inches)
Overall width680 mm (26.8 inches)
Overall length1935 mm (76.2 inches)
Overall height1065 mm (41.9 inches)
Seat height825 mm (32.5 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc144.0 kg (317.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsSmall windscreen.
InstrumentsDual LED headlights
StarterElectric
Color optionsTech Black, Icon Blue

Performance Profile & Rider Fit

200 hp
Peak Power
2.9s
0-60 mph

Best For

Track98%
City25%
Cornering95%
Daily Riding25%
Touring20%
Passenger15%

Rider Profile

Best ForNote: the specifications provided are for the Yamaha YZF-R1 (2025), a flagship literbike, not the YZF-R125 (2026) named in the request, so this profile reflects the R1's character; this machine demands an experienced, skilled rider comfortable with extrem
PurposeBuilt primarily for track riding and high-performance sport road use, with race-derived electronics and chassis geometry prioritizing outright speed and cornering precision.
Rider FitRequires a fit rider able to handle an aggressive forward-leaning riding position, high footpegs, and significant physical input under hard acceleration and braking.
CharacterA razor-sharp, race-bred superbike that rewards commitment and skill with explosive acceleration, crossplane-crank character, and pinpoint cornering ability.
Not Ideal ForNot suitable for beginners, commuters seeking comfort, or riders wanting a relaxed upright touring or passenger-friendly experience.

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

Rider Fit Visualizer

2021 Yamaha YZF-R125 Rider Ergonomics Assessment

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

Feet:

At 825mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2021 Yamaha YZF-R125, with a cramped knee angle of around 70 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.

Find bikes that fit your height →

Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2021 Yamaha YZF-R125 is a sleek and powerful motorcycle that is perfect for both beginners and experienced riders. Its 125cc engine provides plenty of power for zipping around town or hitting the open road, while its lightweight design makes it nimble and easy to handle. The stylish and sporty look of the YZF-R125 is sure to turn heads, and its comfortable seating position makes it a joy to ride for extended periods of time. With responsive handling and impressive fuel efficiency, this bike is a top choice for anyone in the market for a new motorcycle. Overall, the 2021 Yamaha YZF-R125 is a fantastic option for riders looking for a reliable and stylish motorcycle. Its powerful engine, lightweight design, and comfortable seating make it a joy to ride, while its sporty look is sure to make a statement on the road. Whether you're a beginner looking for your first bike or an experienced rider in search of a new thrill, the YZF-R125 is a top contender in the market.
Reply

Add a Comment


Please Login or Register if you would like to leave a comment.