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2023 Kawasaki Z 650RS Overview
The 2023 Kawasaki Z 650RS is a classic motorcycle built around 649 cc of displacement. Under the tank sits a Twin, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation, a compression ratio of 10.8:1. The bore and stroke measures 83 x 60 mm. 2023 Kawasaki Z 650RS delivers 65.7 Nm @ 6500 Revolutions" of torque. From a practical standpoint, the 2023 Z 650RS tips the scales at 187 kg, carries a 15.14-litre fuel tank, offers a seat height of 800 mm and spans a 1405 mm wheelbase. Scroll down for the complete 2023 Kawasaki Z 650RS spec sheet covering every technical detail from suspension travel to tyre sizes.
2023 Z 650RS - Pros & Cons
Strengths
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Fuel injection: The fuel injection injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Considerations
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Age-related wear: As with any used Z 650RS, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.
Owner Experiences & Common Issues
Throttle response and fuelling
The fuel injection on the 2023 Kawasaki Z 650RS is generally well-regarded. Some owners note a slight hesitation at small throttle openings when cold, which clears once the engine reaches operating temperature. A quick visual check of the injector connectors during routine servicing is good practice on higher-mileage examples.
Valve clearance checks
Double Overhead Cams/Twin Cam (DOHC) engines should have valve clearances checked at the manufacturer's specified interval. Owners report that clearances can tighten over time on higher-mileage bikes, leading to slight ticking from the top end. Catching it early keeps the job simple and avoids more costly remediation.
Z 650RS - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2023 Kawasaki Z 650RS, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained Z 650RS should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any Z 650RS. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.
Fuel system care
The Z 650RS's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.
Valve clearance service
Check that valve clearances have been adjusted at the correct intervals on any used Z 650RS. This is a job many owners skip because the bike does not immediately feel wrong - but tight clearances accelerate valve seat wear. Ask for proof it has been done.
2023 Kawasaki Z 650RS - Frequently Asked Questions
What engine does the 2023 Kawasaki Z 650RS have?
The 2023 Kawasaki Z 650RS uses a Twin, four-stroke engine with 649 cc of displacement.
How much does the 2023 Kawasaki Z 650RS weigh?
The 2023 Kawasaki Z 650RS weighs 187 kg. This is the manufacturer's wet figure.
How much power does the 2023 Kawasaki Z 650RS make?
The 2023 Kawasaki Z 650RS produces 65.7 Nm @ 6500 Revolutions" of torque.
What is the fuel tank capacity of the 2023 Kawasaki Z 650RS?
The 2023 Kawasaki Z 650RS has a 15.14-litre fuel tank.
Is the 2023 Kawasaki Z 650RS suitable for shorter riders?
The 2023 Kawasaki Z 650RS has a seat height of 800 mm. This is a moderate seat height that suits a wide range of rider heights.
What brakes does the 2023 Kawasaki Z 650RS have?
The 2023 Kawasaki Z 650RS uses Double disc. Petal-type rotors with two-piston calipers. ABS. at the front and Single disc. Petal disc. Single-piston. ABS. at the rear.
What tyre sizes does the 2023 Kawasaki Z 650RS use?
The front tyre size on the 2023 Kawasaki Z 650RS is 120/70-ZR17.
Kawasaki Z 650RS Spec Evolution
The Kawasaki Z 650RS was produced across 2 model years (2022-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2022 |
2023 |
| Wet Weight |
187 kg / 412.3 lbs |
187.0 kg / 412.3 lbs |
| Engine Detail |
Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder |
Die-cast aluminium cylinder and lightweight coated pistons |
| Seat Height |
820 mm / 32.2 in |
800 mm / 31.5 in. |
| Fuel Capacity |
12 Litres / 3.1 US gal |
15.14 litres / 4.00 US gallons |
| Wheelbase |
1405 mm / 55.3 in |
1405 mm / 55.3 in. |
| Brakes - Front |
2x 300mm discs, 2 piston calipers |
Double disc. Petal-type rotors with two-piston calipers. ABS. |
| Brakes - Rear |
Single 220mm disc, 1 piston caliper |
Single disc. Petal disc. Single-piston. ABS. |
| Suspension - Front |
41 mm hydraulic telescopic fork |
41 mm telescopic fork |
Key Specifications
Torque
65.7 Nm (6.7 kgf-m or 48.5 ft.lbs) @ 6500 Revolutions"
Weight
187.0 kg / 412.3 lbs
Fuel Capacity
15.14 litres / 4.00 US gallons
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Full 2023 Kawasaki Z 650RS Specifications
Comments
Smartphone Connectivity.
Colours
Metallic Moondust Gray/Ebony
Warranty
12 Month Limited Warranty
Ground Clearance (mm)
124 mm
Ground Clearance (in.)
4.9 inches
Seat Height
800 mm / 31.5 in.
Wheelbase
1405 mm / 55.3 in.
Height
1115 mm / 43.9 in.
Length
2065 mm / 81.3 in.
Width
765 mm / 30.1 in.
Fuel Capacity
15.14 litres / 4.00 US gallons
Wet Weight
187.0 kg / 412.3 lbs
Bore x Stroke (in,)
3.3 x 2.4 inches
Bore x Stroke (mm)
83.0 x 60.0 mm
CO2
103.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Displacement (cc)
649.0 cc
Displacement (ci)
39.60 cubic inches
Engine Type
Twin, four-stroke
Fuel Control
Double Overhead Cams/Twin Cam (DOHC)
Engine Detail
Die-cast aluminium cylinder and lightweight coated pistons
Fuel System
Injection. DFI® with Keihin 36mm Keihin throttle bodies
Compression Ratio
10.8:1
Engine Lubrication
Forced lubrication, semi dry sump
Fuel Consumption
4.44 litres/100 km (22.5 km/l or 52.98 mpg)
Ignition
TCBI with electronic advance
Starter
Electric
Clutch
Assist and Slipper Clutch
Final Drive
Chain (final drive)
Gearbox
6-speed
Primary Drive
Sealed chain
Frame Type
Trellis, high-tensile steel
Suspension - Front
41 mm telescopic fork
Suspension - Rear
Horizontal Back-link with preload adjustment
Rake
24.0°
Trail
100 mm / 3.9 in.
Wheel Travel - Front
124 mm / 4.9 in.
Wheel Travel - Rear
130 mm / 5.1 in.
Instrumentation
Dual-dial instrumentation with multi-function LCD screen
Lighting system
Round LED headlight
Brakes - Front
Double disc. Petal-type rotors with two-piston calipers. ABS.
Brakes - Rear
Single disc. Petal disc. Single-piston. ABS.
Rims
Spoke-style cast wheels. Dunlop Sportmax Roadsport 2 tires
Tyres - Front
120/70-ZR17
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