Kawasaki Vulcan 900 Custom - 2021 Specifications and Reviews

The 2021 Kawasaki Vulcan 900 Custom is a midweight cruiser designed for riders seeking classic styling with manageable power. Its 903cc V-twin engine produces 49.6 horsepower and 78 Nm of torque, delivering smooth low-end performance ideal for relaxed cruising. Known for its affordable price point and traditional cruiser aesthetics, it appeals to riders wanting an accessible entry into the cruiser category.

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General information

Price as new3.5  See the detailed rating of design and look, maintenance cost, engine performance, etc. Compare with any other bike.
CategoryCustom / cruiser
Year2021
ModelKawasaki Vulcan 900 Custom

Engine and Transmission Specifications

Exhaust systemParallel slash cut pipes
DrivelineKevlar-reinforced belt
ClutchWet multi-disc
Transmission typeBelt   (final drive)
Gearbox5-speed
Cooling systemLiquid
IgnitionTCBI with digital advance
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection. DFI® 34mm throttle bodies (2), with sub-throttle valves
Valves per Cylinder4
Bore x Stroke88.0 x 74.2 mm (3.5 x 2.9 inches)
Compression9.5:1
Torque78.0 Nm (8.0 kgf-m or 57.5 ft.lbs) @ 3700 RPM
Power49.6 HP (36.2 kW) @ 5700 RPM
Engine details52° V-twin
Engine typeV2, four-stroke
Capacity:903.0 ccm (55.10 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Hydraulic.
Diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tire180/70-15
Front tire80/90-21
Rear wheel travel104 mm (4.1 inches)
Rear SuspensionTriangle swingarm with Uni-Trak single shock
Front wheel travel150 mm (5.9 inches)
Front Suspension41mm hydraulic telescopic fork
Trail183 mm (7.2 inches)
Rake (fork angle)33.0°
Frame typeDouble-cradle, steel
 
 

Physical measures and capacities

Fuel capacity20.00 litres (5.28 US gallons)
Wheelbase1645 mm (64.8 inches)
Ground clearance140 mm (5.5 inches)
Overall width895 mm (35.2 inches)
Overall length2405 mm (94.7 inches)
Overall height1120 mm (44.1 inches)
Seat height685 mm (27.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc276.7 kg (610.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty12 months unlimited mileage
StarterElectric
Color optionsCandy Steel Furnance Orange/Metallic Spark Black

Performance Profile & Rider Fit

51 hp
Peak Power
6.5s
0-60 mph

Best For

Track10%
City55%
Cornering35%
Daily Riding60%
Touring45%
Passenger45%

Rider Profile

Best ForSuitable for newer riders as well as experienced cruiser fans thanks to its low seat height and manageable power delivery.
PurposeBuilt for relaxed boulevard cruising and short-to-medium rides where style and low-end torque matter more than outright speed.
Rider FitThe low 27-inch seat height and cruiser ergonomics make it accessible to shorter riders, though the 610-plus pound wet weight demands confident low-speed handling.
CharacterA classic V-twin custom cruiser with a big front wheel, laid-back stance, and torque-focused feel rather than high-rev excitement.
Not Ideal ForNot a good fit for riders seeking sharp cornering performance, high-speed touring comfort, or any kind of off-road capability.

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

Rider Fit Visualizer

2021 Kawasaki Vulcan 900 Custom Rider Ergonomics Assessment

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

Feet:

At 685mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Kawasaki Vulcan 900 Custom, with a cramped knee angle of around 75 degrees and an upright 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 Kawasaki Vulcan 900 Custom is a stylish and powerful cruiser motorcycle that offers a comfortable and smooth ride. It features a 903cc V-twin engine that delivers plenty of torque and a satisfying rumble. The low seat height and forward controls make it easy to handle, while the sleek and modern design turns heads wherever it goes. Whether you're cruising around town or hitting the open road, the Vulcan 900 Custom provides a great balance of performance, comfort, and style. For riders looking for a versatile and reliable cruiser, the 2021 Kawasaki Vulcan 900 Custom is an excellent choice. Its impressive power and nimble handling make it a joy to ride, while its timeless design ensures that it stands out from the crowd. With its comfortable seating position and advanced features, this motorcycle is a great option for anyone seeking a thrilling and enjoyable riding experience.
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