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2023 Kawasaki Z900RS Sports Motorcycle Review Specs

Fake has no place in your chosen lifestyle. Only Kawasaki has the history to bring yesterday’s ideals to today’s riders in a genuinely proper Modern Classic bike. The 2023 Kawasaki Z900RS Sports Motorcycle embodies the visceral spirit of a 1970s icon, Kawasaki’s original king of excellent Z1. It is designed to fulfill the soul of the rider you are today.

The Kawasaki Z900RS/CAFÈ pays tribute to the iconic Z1, the first hot-rod inline four-cylinder motorbike. It mixes classic Z1 appearance and engine layout with current features, including Kawasaki’s newest electronic rider assist technology, suspension, LED lighting, and digital display.

2023 Kawasaki Z900RS Sports Motorcycle

The 2023 Kawasaki Z900RS Sports Motorcycle revives the iconic styling of the original Z1 900 motorcycle, using timeless design characteristics like minor bodywork and no fairing for a pure retro-style appearance. The Z900RS series is completed with a 948cc engine and current technologies, resulting in a traditional but modern ride.

The 2023 Kawasaki Z900RS Sports Motorcycle has a 948cc liquid-cooled inline inline four-cylinder engine, Assist & Slipper Clutch, horizontal back-link rear suspension, original vintage design, a distinctive teardrop fuel tank, an all-new tuned stainless steel exhaust system, a circular LED headlamp, and bullet-shaped analog gauges.

2023 Kawasaki Z900RS Sports Motorcycle – Features and Specs


The engine is based on the Z900; however, it has been re-tuned to give it an entirely distinct engine character. The Z900 engine has a crisp, quick-revving character that favors high-rpm operation. However, the Kawasaki Z900RS/2023 Kawasaki Z900RS CAFÈ is tuned for low-mid range power, producing substantial torque that aids control for riders of all skill levels. Below 7,000 rpm, the engine pulls more than the Z900. Cam profiles with reduced intake (270˚ to 248˚) and exhaust (256˚ to 244˚) durations optimize engine performance in the low-mid rpm region. The engine’s strong and smooth reaction makes it easy to control.

To compensate for the shorter valve opening durations, the compression ratio is decreased from 11.8:1 in the Z900 to 10:8. The Z900RS/Z900RS CAFE’s smooth demeanor is attributed to its crankshaft, which has a flywheel mass that is around 12% heavier than the Z900. Die-cast cylinder blocks are robust, and the open deck design saves weight. Connecting passages between the cylinders reduces pumping loss while boosting high-rpm performance. The pistons are made using the same unique casting method as the Ninja H2™/H2™R.

2023 Kawasaki Z900RS Sports Motorcycle

The method generates hollow sections to obtain optimal thickness for weight reduction without losing strength. Downdraft intake design gives the fuel mixture the straightest, shortest route to the combustion chamber, which contributes to performance. To further recall the original Z1 history, stylish fins integrated into the cylinder head contribute to the appearance of an air-cooled engine. Die-cast aluminium engine covers, the clutch cover, and many other Z1-themed pieces are likewise inspired by the Z1.

Digital Fuel Injection

36mm throttle bodies are utilized to provide optimal mid-range responsiveness. The ECU controls the sub-throttle valves placed behind the main throttle valves, allowing the EFI system to respond smoothly and sensitively.

Exhaust System

Extensive sound research was conducted to create the optimal exhaust tone, emphasizing the engine’s sound during start-up, idle, and at lower speeds, when the rider can best appreciate the exhaust’s deep rumble. Dual-wall header pipes offer the exhaust a more robust look and are resistant to heat discoloration over time.

The 4-into-1 exhaust with a short loudhailer muffler adds to the classic appearance while improving the exhaust tone. The exhaust system is made of high-quality stainless steel and triple-polished to a brilliant finish. The pre-chamber centralizes mass, decreases muffler size, and adds to the exhaust tone.

2023 Kawasaki Z900RS Sports Motorcycle

Assist and Slipper Clutch

Using the rotating forces of the brand new clutch hub and an all-new pressure plate, an all-new clutch is pressed together during acceleration (assist function), allowing for fewer and lighter clutch springs and a lighter feel at the lever. At the same time, with a strong back-torque, such as when a low gear is chosen while downshifting, the slipper function allows for some clutch slippage to assist in minimizing rear-wheel hop and stalling caused by engine lockup. The judder spring component avoids the judder when the clutch is released.


Gearing has been optimized to suit the 2023 Kawasaki Z900RS Sports Motorcycle’s engine nature. Compared to the Kawasaki Z900, a shorter first gear, and the engine’s powerful low-end torque make it easier to accelerate from a stop. In contrast, a longer sixth gear lets the engine operate at a lower rpm while cruising at highway speeds, providing more ride comfort.

Kawasaki Traction Control System (KTRC) (2-MODE)

The 2-mode technology improves sport riding performance and rider confidence by allowing smooth riding in slick situations. The operator may also turn the system off. Mode 1 has complex programming that allows for a certain amount of wheel slip to maximize acceleration. To generate an accurate real-time picture of what’s going on, the system monitors various metrics, including front and rear wheel speed (slippage) and different engine, machine, and rider input data.

Complex analysis anticipates when traction conditions become unfavorable, and the system responds before wheel slippage exceeds the range for optimum traction. Mode 2 offers more sensitivity and regulates ignition timing, fuel, and airflow for ultra-smooth performance. The system has modest hardware but extensive software. Aside from the engine ECU, the system is based only on front and rear wheel speed sensors, which makes it lightweight.

2023 Kawasaki Z900RS Sports Motorcycle


The trellis frame was developed using Kawasaki’s superior analytical technologies to fit the compact teardrop fuel tank while providing the ideal retro-style handling for pleasurable riding at a slower speed. In contrast to the Z900’s aggressive, forward-leaning posture, the 2023 Kawasaki Z900RS Sports Motorcycle achieves a neutral, or even, stance by lifting the front and lowering the rear. Suspension settings were intended to provide optimal comfort for more relaxed riding.

The upper-triple clamp improves the steering offset by 6 mm (from 28 mm to 34 mm over the Z900), reducing the trail and contributing to light handling. Frame components follow the ideal pipeline, ensuring the frame’s lines are as straight as feasible.

When bends were required, the angles were kept as short as possible, resulting in an awesome design that effectively distributes stress. The five-point, firmly mounted engine is a stressed part that helps to save weight. The twin-tube rear frame section adds to the low seat height and quick reach to the ground while reducing vibration transmission through the seat. The extruded aluminum swingarm is lightweight, which adds to the light handling.


Dual 300mm front discs are gripped by dual opposed piston monobloc calipers, which deliver a solid feel from the first contact and excellent braking performance. The machined Monobloc calipers include an aluminate finish and a laser-etched Kawasaki emblem, adding to their high-quality athletic appeal. The radial-pump master cylinder adds excellent calipers and feel to the calipers. Sintered brake pads add to a great feel.

Inverted Front Fork

The 41mm inverted front suspension provides exceptional ride comfort and sporty riding capabilities. The 10-way compression and 12-way rebound damping adjustability enable fine-tuning according to rider choice and riding style.

2023 Kawasaki Z900RS Sports Motorcycle

Horizontal Back-link Rear Suspension

Fitted with Kawasaki’s latest suspension technology for increased sporty riding capability, it complements the front fork’s degree of ride comfort and athletic performance. The linkage is mounted above the swingarm to improve mass centralization and to position the lay-down shock absorber farther away from the exhaust, ensuring that it is not impacted by exhaust heat. The shock includes adjustable preload and rebound damping.

Anti-Lock Braking System (ABS)

The new 2023 Kawasaki Z900RS Sports Motorcycle comes with standard ABS that helps to deliver a more comforting braking performance.

Wheels & Tires

Cast wheels have flat spokes that appear like antique wire-spoked wheels. Created utilizing Kawasaki’s superior analytical technology, they strike a balance between low weight and attractive appearance, contributing to both handling and the nostalgic Z1 style. Machining on the spokes and rim edge adds to the bike’s high-end appearance in select colors. Dunlop GPR-300 tires add to the retro-style appearance.


The upper-triple clamp is 40mm higher, resulting in the higher handlebar position and outstanding upright riding stance than the Z900. The broad, flat handlebar adds to the classic style while providing a wide grip for improved handling. Compared to the Kawasaki Z900, the new handle grips are 30mm broader (overall), 65mm taller, and 35mm closer to the rider, resulting in a more upright riding stance.

A broad 35-degree steering angle allows for easy maneuvering at low speeds. The handlebar has rubber-mounted bar ends to reduce vibrations. The new clutch and brake levers are 5-way adjustable, accommodating a wide range of hand sizes for added comfort. The slim gasoline tank is small at the back, allowing riders to hold the bike with their knees. The low seat height and small overall design make it easier to reach the ground, allowing a broad spectrum of riders to stop with both feet firmly on the ground.

Stepped seats provide a spacious sitting space for the rider and the passenger. The front seat is thinner, making reaching the ground easier for the rider. The seat may be removed without tools, allowing quick access to the battery, fuse box, and tool kit. Compared to the Z900, the footpegs are 20mm lower and 20mm farther front, resulting in a more comfortable riding posture. Rider footpegs have rubber cushions to decrease vibration transmitted through the feet and rubber-mounted weights on the undersides to dampen vibrations further.

Distinctive Z Styling

With a seamless combination of Z1-inspired stylistic features and contemporary artistry – from the famous teardrop fuel tank to the unique oval LED taillight – the Z900RS provides timeless good looks with great attention to detail and outstanding fit-and-finish. The 2023 Kawasaki Z900RS Sports Motorcycle’s high-quality look is enhanced by attention to the tiniest detail, carefully planned wiring routing, and a flawless fit-and-finish, as well as top-quality paint on the fuel tank and high-grade coating on the bolts.

The centerpiece teardrop fuel tank is evocative of the Z1, and the frame was created to support the tank’s optimal location and compact form. Immersion graphics on the sandstone brown model complement the tank’s rich paint by leaving no raised area, resulting in a high-quality finish.

The 4.5-gallon gasoline tank extends below the side covers, maintaining the tank’s sleek form but increasing tank space for a longer cruising range. The stylish gasoline tank top compliments the tank’s attractive contours. The side covers were intended to allow natural flow from the tank. Emblems on the side cover add to the classic aesthetic. Knee grip covers, situated forward of the new side covers, are pressed aluminum pieces with the unique aluminate coating to provide an appealing, long-lasting finish.

The large-diameter LED headlight combines vintage and contemporary design elements and emits a bright, white light for excellent nighttime vision. Placing bulbs in the high-beam chambers ensures the whole lamp seems light, similar to a retro-style bulb headlight.

The convex lens and chromed headlamp ring add to the retro aesthetic. Round mirrors inspired by the Z1 add to the classic aesthetic while providing an exceptional rearward view. The three-piece front fender features die-cast aluminum fender supports, adding a high-quality touch while enhancing the retro image.

The supports are fragile to reduce weight, measuring only 1.7mm thick. A stylish two-tone seat with different materials on the top and sides creates a high-quality design. Double-stitching enhances the high-quality image.

The Z1’s duck-bill tail cowl inspired the flowing rear cowl design. The oval design of the LED taillight pays homage to the Z1. Unlike standard LED taillights, which appear as a collection of dots, the surface-emitting LED taillight illuminates a solid surface, resulting in a retro and modern look. Convenient luggage hooks on the new tail cowl and rear flap were designed to protrude, preventing tie-down cords from rubbing against the elegant bodywork—dual-dial Instrumentation with Multi-Functional LCD.

The analog-style speedometer and tachometer dials complement a multi-functional LCD screen that balances retro styling and modern functionality. Bullet-shaped dial cases add a retro touch, while a spindle finish on its dial faces adds to the contemporary, high-quality design.

The LCD screen has a negative display (white letters on a black background), contributing to the instrument cluster’s sporty, modern appearance. The gear position indicator improves shifting precision and confidence. In addition to the gear position indication, the display has an odometer, fuel gauge, dual trip meters, remaining range, coolant temperature, current and average fuel consumption, exterior temperature, clock, and the Economical Riding indication. The Economical Riding Indicator on the LCD screen helps riders maximize their fuel economy.

2023 Kawasaki Z900RS Sports Motorcycle

2023 Kawasaki Z900RS Sports Motorcycle – Price

The new 2023 Kawasaki Z900RS Sports Motorcycle is available at $1,194 only.

2023 Kawasaki Z900RS Sports Motorcycle – Technical Specifications


Engine type Liquid-cooled, 4-stroke Inline Four
Displacement 948 cm³
Bore x stroke 73.4 x 56 mm
Compression ratio 10.8:1
Valve system DOHC, 16 valves
Fuel system Fuel injection: 36mm x 4 including sub-throttles
Starting System Electric
Lubrication Forced lubrication, wet sump

Gear Performance & Transmission

Maximum power 82 kW {111 PS} / 8,500 rpm
Fuel consumption 5.2 l/100 km
CO2 emission 124 g/km
Maximum torque 98.5 N•m {10 kgf•m} / 6,500 rpm
Transmission 6-speed
Final drive Sealed chain
Primary Reduction Ratio 1.627 (83/51)
Gear Ratios 1st 2.917 (35/12)
Gear Ratios 2nd 2.059 (35/17)
Gear Ratios 3rd 1.650 (33/20)
Gear Ratios 4th 1.409 (31/22)
Gear Ratios 5th 1.222 (33/27)
Gear Ratios 6th 0.967 (29/30)
Final reduction ratio 2.800 (42/15)
Clutch Wet multi-disc

Suspensions Brakes & Suspension

Brakes, front Dual semi-floating 300 mm discs. Caliper: Dual radial-mount, monobloc, opposed 4-piston
Brakes, rear Single 250 mm disc. Caliper: Single-piston
Suspension, front 41 mm inverted fork including compression & rebound damping and spring preload adjustability
Suspension, rear Horizontal Back-link, gas-charged shock featuring rebound damping & spring preload adjustability

Dimensions Frame & Dimensions

Frame type Trellis, high-tensile steel
Trail 98 mm
Wheel travel front 120 mm
Wheel travel rear 140 mm
Tyre, front 120/70ZR17 M/C (58W)
Tyre, rear 180/55ZR17 M/C (73W)
Steering angle, left/right 33° / 33°
Steering angle, left/right 33° / 33°
L x W x H 2,100 x 865 x 1,150 mm
Wheelbase 1,470 mm
Ground clearance 130 mm
Fuel capacity 17 litres
Seat height 835 mm
Curb mass 215 kg

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