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Scooter · 2019

J300

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MotoLibrary Score
37 /100 Commuter
Power/Weight
0.14 hp/kg
Engine
299 ccm

2019 Kawasaki J300 Technical Analysis & Specification Breakdown

Positioned in Kawasaki's scooter motorcycle lineup, the 2019 Kawasaki J300 pairs a 299 cc (18.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 27.2 HP (19.9 kW) at 8,000 rpm, transferring power to the rear wheel through belt final drive. With a specific output of 91 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the J300 measures 191 kg (421 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (7.02 kg per horsepower). Rider ergonomics and chassis geometry center around a 775 mm (30.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,555 mm (61.2 in) wheelbase engineered for planted straight-line stability. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Kawasaki archive, this model family spans 6 indexed model years from 2014 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
91 HP/L
Power-to-Weight
0.14 HP/kg (7.02 kg/HP)
Standover Height
775 mm (30.5 in)
Engine
Displacement 299.0 ccm (18.24 cubic inches)
Engine Type Single cylinder, four-stroke
Power 27.2 HP (19.9 kW)) @ 8000 RPM
Compression 10.8:1
Bore x Stroke 72.7 x 72.0 mm (2.9 x 2.8 inches)
Valves/Cylinder 4
Fuel System Injection
Fuel Control Single Overhead Cams (SOHC)
Ignition ECU Control (Full transistor)
Lubrication Forced lubrication, wet sump
Cooling Liquid
Transmission
Final Drive Belt (final drive)
Chassis
Frame Type Tubular diamond, steel
Trail 113 mm (4.4 inches)
Front Suspension Telescopic fork
Front Travel 119 mm (4.7 inches)
Rear Suspension Twin shocks with 5-way adjustable preload
Rear Travel 130 mm (5.1 inches)
Wheelbase 1555 mm (61.2 inches)
Ground Clearance 145 mm (5.7 inches)
Wheels & Brakes
Front Tyre 120/80-14M/C58S
Rear Tyre 150/70-13M/C64S
Front Brakes Single disc. Hydraulic. Two-piston calipers. Optional ABS.
Front Brake Ø 260 mm (10.2 inches)
Rear Brakes Single disc. Two-piston calipers.
Rear Brake Ø 240 mm (9.4 inches)
Dimensions & Weight
Weight incl. 191.0 kg (421.1 pounds)
Seat Height 775 mm (30.5 inches) If adjustable, lowest setting.
Overall Length 2235 mm (88.0 inches)
Overall Width 715 mm (28.1 inches)
Fuel Capacity 13.00 litres (3.43 US gallons)
Other
Starter Electric
Color Options Metallic Flat Anthracite Black/Candy Flat Blazed Green
More from Kawasaki
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Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏙️
Best For
City & Commuting
📏
Seat Height
77.5 cm / 30.5 in
⚖️
Handling
Medium weight — some experience needed
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