Kawasaki Z 900 RS Buyer's Guide

The Machine's Character

The Z900RS answers a simple question: can a modern motorcycle carry the look of Kawasaki's 1970s Z1 without faking anything underneath? This generation says yes. The teardrop tank, the ducktail tail section and the period-correct detailing make it a real homage, not a costume. Underneath sits a liquid-cooled 948 cc inline-four making 113 hp and 73 lb-ft, in a steel trellis frame. It comes with ABS and traction control as electronic aids. The mechanical kit includes a slipper clutch, adjustable suspension at both ends and an LED headlight. Few bikes in the retro class get purist style this right while keeping the modern technology in the background.

On the road the four is smooth and quick but never threatening. The chassis stays approachable, so newer riders and old hands both settle in fast. Reliability is a real strength, and the aftermarket support is deep if you want to make the bike your own. Who is it for? The rider who buys with their heart but still expects the bike to work every single day. The caveats are honest ones. It weighs 476 lb (216 kg) wet and the seat sits 33.3 in (845 mm) up. A small number of owners have also reported cam chain tensioner noise, which seems to be sporadic rather than widespread.

Hard Numbers

Spec sheets don't ride bikes, but they set the baseline.

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Key specifications
Power	113 hp (83 kW) @ 8,500 rpm
Torque	73 lb-ft (98 Nm) @ 6,500 rpm
Displacement	948 cc
Engine	Inline-four
Cooling	Liquid-cooled
Gearbox	6-speed
Final drive	Chain
Fork	Upside-down (USD)
Front brake	300 mm
Front tire	120/70-17
Rear tire	180/55-17
Wheelbase	57.9 in (1470 mm)
Seat height	33.3 in (845 mm)
Wet weight	476 lb (216 kg)
Fuel capacity	4.5 gal (17 L)

Equipment check

Chassis

Front Suspension Adjustable Standard
Rear Suspension Adjustable Standard

Comfort

Heated Grips Optional

Connectivity

Smartphone Connectivity Standard
USB Charging Port Optional

Drivetrain

Slipper Clutch Standard

Lighting

LED Headlight Standard

Safety

ABS Standard
Traction Control Standard

Known issues

Cam chain adjuster noise

engine rare

A small number of owners have reported issues with the cam chain tensioner, resulting in irregular noise or, in rare cases, failure. The problem appears to be sporadic and not widespread.

The Numbers Compared

Compare the technical specifications of the Kawasaki Z 900 RS with other bikes in its class.

Head-to-head: Kawasaki Z 900 RS vs. its rivals

Power

113 hp This bike 119 hp Yamaha XSR900 110 hp BMW R nineT Racer 104 hp Triumph Speed Twin 1200 105 hp Husqvarna Vitpilen 801

Torque

73 lb-ft This bike 69 lb-ft Yamaha XSR900 86 lb-ft BMW R nineT Racer 83 lb-ft Triumph Speed Twin 1200 64 lb-ft Husqvarna Vitpilen 801

Displacement

948 cc This bike 890 cc Yamaha XSR900 1170 cc BMW R nineT Racer 1200 cc Triumph Speed Twin 1200 799 cc Husqvarna Vitpilen 801

Wet weight

476 lb This bike 425 lb Yamaha XSR900 483 lb BMW R nineT Racer 476 lb Triumph Speed Twin 1200 418 lb Husqvarna Vitpilen 801

Seat height

33.3 in This bike 31.9 in Yamaha XSR900 31.7 in BMW R nineT Racer 31.9 in Triumph Speed Twin 1200 32.3 in Husqvarna Vitpilen 801

What's new versus the previous generation

If you're cross-shopping the older generation, here's what changed.

Previous generation · 2018–2024

Kawasaki Z 900 RS (MY2018)

Z1 Soul, Modern Muscle

Compare to the previous model →

Alternatives to the Kawasaki Z 900 RS

If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.

Any price note compares both bikes at the same age — the youngest age both have on the used market — against this Kawasaki Z 900 RS. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.