Kawasaki Z300
39 hp, 296 cc, 375 lbs2015 - 2016
Kawasaki Z400
45 hp, 399 cc, 368 lbs2019 - 2020
MetricUS
EngineKawasaki Z300Kawasaki Z400
Displacement296 cc399 cc
Max power39 hp (@11 000 RPM)45 hp (@10 000 RPM)
Max torque19 lb ft (@10 000 RPM)28 lb ft (@8 000 RPM)
Redline13 000 RPM12 000 RPM
Idling speed1 300 RPM1 300 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Inline-2
Compression10.60:111.50:1
Oil capacity2.27 quart1.89 quart
Oil type10W40SAE 10W40
Spark plug typeNGK CR8ENGK LMAR9G
CoolingLiquidLiquid
Valves88
Bore62.0 mm70.0 mm
Stroke49.0 mm51.8 mm
Throttle bore32.0 mm32.0 mm
Weight to power9.61 lbs/hp8.18 lbs/hp
Power to weight260 hp/2500lbs305 hp/2500lbs
Battery type12V 8Ah12V 8Ah
GearboxKawasaki Z300Kawasaki Z400
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type520
Gears count66
Primary ratio3.0872.219
Final drive3.02.929
1. gear2.714 (38 mph)2.929 (45 mph)
2. gear1.789 (58 mph)2.056 (65 mph)
3. gear1.409 (73 mph)1.619 (82 mph)
4. gear1.16 (89 mph)1.333 (99 mph)
5. gear1.0 (103 mph)1.154 (115 mph)
6. gear0.857 (120 mph)1.037 (127 mph)
ChasisKawasaki Z300Kawasaki Z400
Frame typeDiamond steel tubeTrellis frame
Front susp.37mm Telescopic fork, 4.72 in travel41mm fork, 4.72 in travel
Rear susp.Monoshock, 5.20 in travelMonoshock, 5.12 in travel
Summary

The 2015-2016 Kawasaki Z300 and the 2019-2020 Kawasaki Z400 are two popular models from the Japanese motorcycle manufacturer. Both these bikes belong to the Kawasaki Ninja family and are designed to cater to the needs of riders who seek a mix of performance, comfort, and affordability.

The 2015-2016 Kawasaki Z300 is powered by a 296cc liquid-cooled parallel-twin engine that generates a peak power of 39 horsepower and 27 lb-ft of torque. It features a six-speed transmission and has a top speed of around 100 mph. This motorcycle is targeted towards entry-level riders who seek an affordable, yet capable machine for their daily commutes or weekend rides.

On the other hand, the 2019-2020 Kawasaki Z400 comes with a larger, 399cc liquid-cooled parallel-twin engine that produces 49 horsepower and 28 lb-ft of torque. It has a six-speed transmission with a slipper clutch and can reach a top speed of around 115 mph. The Z400 is designed for riders who want a slightly more powerful and aggressive machine but still value the practicality and maneuverability of a smaller displacement motorcycle.

In terms of looks, both bikes feature a sporty, aggressive styling with sharp lines and an angular front end. However, the Z400 has a slightly more refined and modern design with a full LED headlight, compared to the halogen headlight on the Z300.

When it comes to handling, both bikes perform admirably, with responsive steering and a nimble feel. However, the Z400 has a slightly better suspension setup with improved damping and spring rates. This translates to better stability and handling on rough roads and corners.

In terms of fuel efficiency, the Z300 has an edge over the Z400, with a claimed 70 mpg compared to the Z400's 48 mpg. However, the Z400 has a larger fuel tank, which means it has a better range and requires fewer stops for refueling.

Overall, both the 2015-2016 Kawasaki Z300 and the 2019-2020 Kawasaki Z400 are great motorcycles that offer excellent value for money. The Z300 shines in terms of its affordability and fuel efficiency, making it an ideal choice for budget-conscious riders. Whereas, the Z400 provides slightly more power and better handling, making it an excellent option for riders who want a sportier riding experience. However