Kawasaki Z650RS - 2025 Specifications and Reviews

The 2025 Kawasaki Z650RS is a modern retro middleweight that blends classic styling with contemporary engineering, making it ideal for new riders and enthusiasts seeking approachable performance. Its 649cc parallel-twin delivers smooth, manageable power with 67.3 horsepower and 64.0 Nm torque, while the lightweight aluminum engine and DOHC design ensure responsive handling and reliability. Best known for combining vintage aesthetics with rider-friendly characteristics, it excels as an accessible gateway to motorcycling without sacrificing genuine capability.

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General information

Color OptionsEbony, Ebony/Green Ebony/Green, Ebony/Yellow Ebony/Yellow
CategoryClassic
Year2025
ModelKawasaki Z650RS

Engine and Transmission Specifications

StartingElectric
Emission102.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel Consumption4.40 litres/100 km (22.7 km/l or 53.46 mpg)
ClutchAssist and Slipper Clutch
Final DriveChain (final drive)
Gearbox6-speed
Cooling SystemLiquid
IgnitionTCBI with electronic advance
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
InductionInjection. DFI® with Keihin 36mm Keihin throttle bodies
Bore x Stroke83.0 x 60.0 mm (3.3 x 2.4 inches)
Compression Ratio10.8:1
Max Torque64.0 Nm (6.5 kgf-m or 47.2 ft.lbs) @ 6500 RPM
Max Power67.3 HP (49.1 kW)) @ 8000 RPM
Engine DetailsDie-cast aluminium cylinder and lightweight coated pistons
Engine TypeTwin, four-stroke
Capacity:649.0 ccm (39.60 cubic inches)

Physical measures and capacities

Fuel Capacity12.00 litres (3.17 US gallons)
Wheelbase1405 mm (55.3 inches)
Ground Clearance125 mm (4.9 inches)
Overall Width800 mm (31.5 inches)
Overall Length2065 mm (81.3 inches)
Overall Height1115 mm (43.9 inches)
Seat Height820 mm (32.3 inches) If adjustable, lowest setting.
Power/Weight Ratio0.3869 HP/kg
Wet Weight187.0 kg (412.3 pounds)
Dry Weight174.0 kg (383.6 pounds)
 
 

Kawasaki Z650RS dimensions and frame

WheelsSpoke-style cast wheels. Dunlop Sportmax Roadsport 2 tires
Rear BrakesSingle disc. Petal disc. Single-piston. ABS.
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesDouble disc. Petal-type rotors with two-piston calipers. ABS.
Rear Tyre160/60-ZR17
Front Tyre120/70-ZR17
Rear Wheel Travel130 mm (5.1 inches)
Rear SuspensionHorizontal Back-link with preload adjustment
Front Wheel Travel125 mm (4.9 inches)
Front Suspension41 mm telescopic fork
Trail100 mm (3.9 inches)
FrameTrellis, high-tensile steel

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specsReport missing specs or required updates.
Warranty12 Month Limited Warranty
LightingRound LED headlight
InstrumentsDual-dial instrumentation with multi-function LCD screen
Rake (fork angle)24.0°
DrivelineSealed chain
Lubrication systemForced lubrication, semi dry sump
Maximum RPM12500

Performance Profile & Rider Fit

67.3 hp
Peak Power
4.3s
0-60 mph

Best For

Track40%
City78%
Cornering70%
Daily Riding80%
Touring45%
Passenger45%

Rider Profile

Best ForWell suited to newer and intermediate riders thanks to its approachable power delivery and manageable weight, while still having enough character to satisfy more experienced riders looking for a fun, low-stress bike.
PurposeDesigned primarily as a stylish, retro-styled naked roadster for enjoyable street riding rather than outright speed or long-distance touring.
Rider FitA moderate seat height and light overall weight make it accessible to riders of average and shorter height, with an upright, natural riding position that's easy on the wrists and back.
CharacterBlends classic Z-series styling with modern underpinnings, offering a fun, torquey parallel-twin engine and nimble handling that rewards playful riding around town and on twisty roads.
Not Ideal ForNot the best choice for riders seeking high-speed touring comfort, large-scale luggage capacity, or any serious off-road capability.

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

Rider Fit Visualizer

2025 Kawasaki Z650RS Rider Ergonomics Assessment

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

Feet:

At 820mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2025 Kawasaki Z650RS, with a relaxed knee angle of around 125 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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