Yamaha R125 - 2021 Specifications and Reviews

The 2021 Yamaha R125 is an entry-level sport bike designed for beginner and young riders seeking an affordable, manageable motorcycle with genuine sportbike styling. Its lightweight 124.7cc single-cylinder engine delivers modest but adequate power for learning fundamentals, while liquid cooling and fuel injection ensure reliable daily performance. Known for accessible handling and low running costs, it's the perfect stepping stone into sport riding.

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General information

CategorySport
Year2021
ModelYamaha R125
 
 

Engine and Transmission Specifications

Emission detailsEuro 5
Greenhouse gases48.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption2.10 litres/100 km (47.6 km/l or 112.01 mpg)
ClutchAssist and slipper clutch
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionTCI
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection
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
Power14.8 HP (10.8 kW) @ 10000 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.7 ccm (7.61 cubic inches)

Brakes, suspension, Frame and wheels

WheelsY-spoke wheels
Rear brakesSingle disc
Diameter292 mm (11.5 inches)
Front brakesSingle disc
Rear tire140/70-M17
Front tire110/80-M17
Rear wheel travel114 mm (4.5 inches)
Rear SuspensionSwingarm, link
Front wheel travel130 mm (5.1 inches)
Front SuspensionUpside-down telescopic fork, 41 mm
Trail89 mm (3.5 inches)
Rake (fork angle)25.0°
Frame typeSteel deltabox frame and aluminum swingarm
 
 

Physical measures and capacities

Oil capacity1.50 litres (1.59 US quarts)
Wheelbase1355 mm (53.3 inches)
Ground clearance155 mm (6.1 inches)
Overall width680 mm (26.8 inches)
Overall length1955 mm (77.0 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
LightLED headlight
StarterElectric
Color optionsIcon Blue, Tech Black

Performance Profile & Rider Fit

14.8 hp
Peak Power
12.5s
0-60 mph

Best For

Track55%
City85%
Cornering80%
Daily Riding70%
Touring25%
Passenger20%

Rider Profile

Best ForIdeal for beginners, new licence holders, and younger riders taking their first steps into sportbikes.
PurposeBuilt for learning sporty riding technique, commuting, and having fun on twisty roads without intimidating power.
Rider FitVery light and compact, easy to handle for smaller or less experienced riders, with a manageable seat height.
CharacterA miniature superbike in styling and attitude, offering playful handling and eager revs rather than outright speed.
Not Ideal ForNot suited for highway touring, carrying a passenger long distances, or riders seeking strong overtaking power.

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

Rider Fit Visualizer

2021 Yamaha 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 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.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 Yamaha R125 is a sleek and stylish motorcycle that offers a great balance of power, performance, and agility. With its 125cc liquid-cooled engine and lightweight frame, this bike is perfect for both urban commuting and weekend adventures. The R125 also features a modern and sporty design, with sharp lines and vibrant color options, making it stand out on the road. Its advanced braking and suspension systems ensure a smooth and controlled ride, while the comfortable seating position makes it an ideal choice for riders of all skill levels. Overall, the 2021 Yamaha R125 is a top contender in the 125cc motorcycle market, offering a perfect blend of style, performance, and practicality. Whether you're a beginner rider looking for a reliable and easy-to-handle bike, or a seasoned rider seeking a fun and agile machine for daily rides, the R125 delivers on all fronts. With its advanced features, attractive design, and Yamaha's renowned reliability, this motorcycle is a great choice for anyone in the market for a versatile and exciting ride.
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