Built around Kawasaki's naked motorcycle platform, the 2025 Kawasaki Z900 relies on a 948 cc engine powerplant. Internal engine geometry specifies a bore and stroke of 73.4 x 56.0 mm with a 11.8:1 compression ratio.
On the scales, the Z900 measures 212 kg (467 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1 mm (0 in) wheelbase engineered for quick, flickable steering geometry. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 6 indexed model years from 2017 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
810 mm (31.9 in)
Engine
Displacement948 cc
Engine Details948cc, liquid-cooled, 4-stroke, DOHC 16-valve in-line four
Compression11.8:1
Bore x Stroke73.4 x 56.0 mm
Fuel SystemFuel injection: ø36 mm x 4
IgnitionDigital
LubricationForced lubrication, wet sump
Transmission
Gearbox6-speed, return
Final DriveChain
ClutchWet multi-disc, manual
Chassis
Frame TypeTrellis, high-tensile steel
Front Suspensionø41 mm inverted fork with rebound damping and spring preload adjustability / 120 mm (4.7 in)
Rear SuspensionHorizontal Back-link, gas-charged shock with rebound damping and spring preload adjustability / 140 mm (5.5 in)
Wheelbase1,450 mm (57.1 in)
Wheels & Brakes
Front Tyre120/70ZR17M/C (58W)
Rear Tyre180/55ZR17M/C (73W)
Front BrakesDual semi-floating ø300 mm discs with radial-mount opposed 4-piston calipers
Rear Brakesø250 mm disc with single-piston caliper
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
