Kawasaki Z400
45 hp, 399 cc, 368 lbs2019 - 2020
Kawasaki Z650
65 hp, 649 cc, 412 lbs2016 - 2019
EngineKawasaki Z400Kawasaki Z650
Displacement399 cc649 cc
Max power45 hp (@10 000 RPM)65 hp (@6 500 RPM)
Max torque28 lb ft (@8 000 RPM)50 lb ft (@8 000 RPM)
Redline12 000 RPM9 500 RPM
Idling speed1 300 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Inline-2
Compression11.50:110.80:1
Oil capacity1.89 quart1.99 quart
Oil typeSAE 10W4010W40
Spark plug typeNGK LMAR9GNGK CR9EIA-9
CoolingLiquidLiquid
Valves88
Bore70.0 mm83.0 mm
Stroke51.8 mm60.0 mm
Throttle bore32.0 mm36.0 mm
Weight to power8.18 lbs/hp6.34 lbs/hp
Power to weight305 hp/2500lbs394 hp/2500lbs
Battery type12V 8Ah12V 8.6Ah
GearboxKawasaki Z400Kawasaki Z650
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type520RK 520
Gears count66
Primary ratio2.2192.095
Final drive2.9293.067
1. gear2.929 (45 mph)2.438 (44 mph)
2. gear2.056 (65 mph)1.714 (63 mph)
3. gear1.619 (82 mph)1.333 (81 mph)
4. gear1.333 (99 mph)1.111 (97 mph)
5. gear1.154 (115 mph)0.966 (112 mph)
6. gear1.037 (127 mph)0.852 (127 mph)
ChasisKawasaki Z400Kawasaki Z650
Frame typeTrellis frameTrellis, high tensile steel
Front susp.41mm fork, 4.72 in travel41mm Telescopic fork, 4.88 in travel
Rear susp.Monoshock, 5.12 in travelMonoshock
Summary

The 2019-2020 Kawasaki Z400 and 2016-2019 Kawasaki Z650 are two popular sport motorcycles that have been manufactured by the Japanese company. While they have many similarities, there are also notable differences between them.

Basic characteristics: The Kawasaki Z400 is a lightweight and agile bike with a liquid-cooled, DOHC 399cc engine that produces 49 horsepower and 28 lb-ft of torque. It has a six-speed transmission and a slipper clutch for smoother shifting. The Z400 is equipped with a responsive assist and slipper clutch technology, Anti-lock Braking System (ABS), and Electronic Fuel Injection (EFI). The bike weighs around 363 pounds and can reach a top speed of 115 mph.

The Kawasaki Z650, on the other hand, is a heavier (around 410 pounds) and more powerful motorcycle with a 649cc parallel-twin engine that produces 68 horsepower and 47 lb-ft of torque. It has a six-speed transmission and a slipper clutch for smoother shifting. The Z650 comes with a similar assist/slipper clutch technology, ABS, and EFI. It also has a top speed of 125 mph.

Targeted audiences: The Kawasaki Z400 is targeted towards beginner and intermediate riders looking for a budget-friendly entry-level bike. The Z400 is a great bike for commuters, city riders, and those who need a bike for weekend cruises, and occasional track days. The Kawasaki Z650 is built for those with some riding experience, looking for a more powerful bike that is equally comfortable for long rides and for twisty roads. It is a great option for touring, racing as well as commuting.

Best points compared to each other: The Kawasaki Z400 is best known for its lightness and lively handling, making it perfect for beginners, city riders, and track enthusiasts. It is also budget-friendly, with a price tag that puts it within reach for most riders, making it one of the best value-for-money bikes in the market.

The Kawasaki Z650 is known for its well-balanced handling and comfortable riding position. It is more powerful, smoother and quicker in acceleration, making it a great option for intermediate and advanced riders.

Areas where they shine: Both the Kawasaki Z400 and Z650 are popular bikes with a range of great features. The Z400 is perfect for commuting, with its lightweight nature, fuel-efficient engine and high maneuverability. On the other hand, Z650 shines in its comfort

Dyno chart of 2017 Kawasaki Z650