Honda CBR300R - 2021 Specifications and Reviews

The 2021 Honda CBR300R is an accessible middleweight sport bike ideal for beginner and intermediate riders. Its lightweight 286cc single-cylinder engine delivers manageable power while maintaining the aggressive styling of larger sport bikes. Known for reliability, affordability, and nimble handling, it serves as an excellent entry point into sport riding.

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General information

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CategorySport
Year2021
ModelHonda CBR300R

Engine and Transmission Specifications

Emission detailsMeets current EPA standards. Models sold in California meet current CARB standards and may differ slightly due to emissions equipment.
Greenhouse gases76.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption3.31 litres/100 km (30.2 km/l or 71.06 mpg)
ClutchWet multiplate with coil springs
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionComputer-controlled digital transistorized with electronic advance
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. PGM-Fi, 38mm throttle body
Valves per Cylinder4
Bore x Stroke76.0 x 63.0 mm (3.0 x 2.5 inches)
Compression10.7:1
Torque22.9 Nm (2.3 kgf-m or 16.9 ft.lbs)
Power34.9 HP (25.5 kW) @ 10500 RPM
Engine detailsCounterbalancer
Engine typeSingle cylinder, four-stroke
Capacity:286.0 ccm (17.45 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Optional ABS
Diameter296 mm (11.7 inches)
Front brakesSingle disc. Optional ABS
Rear tire140/70-17
Front tire110/70-17
Rear wheel travel103 mm (4.1 inches)
Rear SuspensionPro-Link single shock with five positions of spring preload adjustability
Front wheel travel118 mm (4.7 inches)
Front Suspension37mm fork
Trail98 mm (3.9 inches)
Rake (fork angle)25.3°
Frame typeSteel tube
 
 

Physical measures and capacities

Fuel capacity12.87 litres (3.40 US gallons)
Wheelbase1379 mm (54.3 inches)
Seat height780 mm (30.7 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc161.9 kg (357.0 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsModel ID: CBR300R.
Factory warrantyOne year. Transferable. Unlimited-mileage.
StarterElectric
Color optionsGrand Prix Red, Matte Gray Metallic

Performance Profile & Rider Fit

34.9 hp
Peak Power
7.5s
0-60 mph

Best For

Track40%
City80%
Cornering65%
Daily Riding72%
Touring35%
Passenger30%

Rider Profile

Best ForThis bike is ideally suited for beginners and new riders who want a manageable, non-intimidating introduction to sport bikes.
PurposeIt's built for learning the fundamentals of sport riding, commuting, and gaining confidence before moving to a larger machine.
Rider FitThe low seat height and light weight make it accessible and easy to handle for riders of smaller stature or those new to two wheels.
CharacterIt has a friendly, approachable personality that rewards smooth inputs over outright aggression, with just enough sportbike styling and feel to be fun.
Not Ideal ForIt's not for experienced riders seeking high-speed thrills, long-distance touring comfort, or serious two-up travel.

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

Rider Fit Visualizer

2021 Honda CBR300R 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 Honda CBR300R, 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

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MotorcycleDB Review

The 2021 Honda CBR300R is a remarkable motorcycle that combines sporty performance and fuel efficiency. With a 286cc single-cylinder engine, the CBR300R delivers ample power for both city commuting and weekend adventures. The bike's lightweight design and agile handling make it a joy to ride, while its comfortable seating position and excellent fuel economy make it a practical choice for daily transportation. Whether you're a beginner rider or a seasoned motorcyclist, the CBR300R's smooth power delivery and responsive handling will surely impress. In addition to its performance and fuel efficiency, the 2021 Honda CBR300R also features a sleek and modern design that sets it apart from other motorcycles in its class. With its sporty fairings, LED lighting, and aggressive styling, the CBR300R is sure to turn heads wherever you go. Whether you're riding through the city streets or carving through twisty mountain roads, the CBR300R's eye-catching appearance and impressive performance make it a top choice for riders looking for a reliable and exciting motorcycle.
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