Yamaha YZF-R3 - 2021 Specifications and Reviews

The 2021 Yamaha YZF-R3 is an affordable sport bike designed for new riders and those seeking nimble, everyday performance. Its 321cc parallel-twin engine delivers 42 horsepower with forgiving handling characteristics, making it ideal for learning track fundamentals and commuting. Known for its reliability, fuel efficiency, and accessible ergonomics, the R3 bridges the gap between learner and intermediate sportbikes.

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General information

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CategorySport
Year2021
ModelYamaha YZF-R3

Engine and Transmission Specifications

Greenhouse gases97.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption4.20 litres/100 km (23.8 km/l or 56.00 mpg)
DrivelineConstant mesh
ClutchWet multiplate
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionTCI: Transistor Controlled Ignition
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Fuel Injection with YCC-T and YCC-I
Valves per Cylinder4
Bore x Stroke68.0 x 44.1 mm (2.7 x 1.7 inches)
Compression11.2:1
Torque29.6 Nm (3.0 kgf-m or 21.8 ft.lbs) @ 9000 RPM
Power42.0 HP (30.7 kW) @ 10750 RPM
Engine detailsAll-aluminum DiASil cylinder
Engine typeTwin, four-stroke
Capacity:321.0 ccm (19.59 cubic inches)

Brakes, suspension, Frame and wheels

Wheels10-spoke cast aluminum
Rear brakesSingle disc. Optional ABS.
Diameter298 mm (11.7 inches)
Front brakesSingle disc. Optional ABS.
Rear tire140/70-17
Front tire110/70-17
Rear wheel travel124 mm (4.9 inches)
Rear SuspensionMonocross single shock, adjustable preload
Front wheel travel130 mm (5.1 inches)
Front SuspensionInverted telescopic fork
Trail94 mm (3.7 inches)
Rake (fork angle)25.0°
Frame typeDiamond, steel frame and swingarm
 
 

Physical measures and capacities

Oil capacity2.60 litres (2.75 US quarts)
Fuel capacity14.00 litres (3.70 US gallons)
Wheelbase1379 mm (54.3 inches)
Overall width729 mm (28.7 inches)
Overall length2090 mm (82.3 inches)
Overall height1140 mm (44.9 inches)
Seat height780 mm (30.7 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc166.9 kg (368.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty1 Year Limited Factory Warranty
LightLED headlight
InstrumentsDigital gear position, fuel capacity, real time and average fuel economy, water temp, clock and an oil change trip meter
StarterElectric
Color optionsTeam Yamaha Blue, Matte Stealth Black, Electric Teal

Performance Profile & Rider Fit

42 hp
Peak Power
5.6s
0-60 mph

Best For

Track65%
City78%
Cornering80%
Daily Riding72%
Touring38%
Passenger45%

Rider Profile

Best ForIdeal for beginners and newer riders, plus experienced riders wanting a light, forgiving sport commuter. Approachable power with an assist/slipper clutch.
PurposeA small-displacement full-fairing sportbike built for spirited canyon runs, twisty backroads, city commuting and occasional track days.
Rider FitSporty but manageable ergonomics: 30.7in seat, low 373lb wet weight and moderate clip-on lean make it easy to flick and easy to reach the ground.
CharacterNimble, revvy and confidence-inspiring. The 321cc twin loves to be wound out, rewarding smooth inputs while staying gentle enough not to intimidate.
Not Ideal ForNot for riders chasing big highway power, long two-up touring comfort, or any off-road use. Taller/heavier riders may find it cramped over distance.

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

Rider Fit Visualizer

2021 Yamaha YZF-R3 Rider Ergonomics Assessment

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

Feet:

At 780mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Yamaha YZF-R3, 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 YZF-R3 is a powerful and stylish motorcycle that delivers an exhilarating riding experience. With its 321cc engine and lightweight chassis, this bike offers excellent performance and agility on the road. Its sleek design and aggressive styling make it stand out from the crowd, while its advanced features such as ABS brakes and adjustable suspension enhance safety and comfort for the rider. Whether you're a seasoned rider or a beginner looking for a thrilling ride, the Yamaha YZF-R3 is a fantastic choice that delivers on both power and style. The 2021 Yamaha YZF-R3 is a top-notch motorcycle that offers an impressive combination of performance and style. Its powerful 321cc engine and lightweight design make it a joy to ride, while its advanced features and ergonomic design enhance safety and comfort. With its sleek and aggressive styling, this bike is sure to turn heads on the road. Whether you're hitting the track or cruising the streets, the Yamaha YZF-R3 is a standout choice for riders looking for a thrilling and reliable bike.
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