Kawasaki Ninja 400: Detailed Technical and Practical Analysis

The Kawasaki Ninja 400 has carved a niche as a versatile and approachable sportbike, bridging the gap between entry-level and middleweight machines.

Engine & Performance:

  • Type: Liquid-cooled, 4-stroke, parallel twin.
  • Displacement: 399cc.
  • Bore x Stroke: 70.0 x 51.8 mm.
  • Compression Ratio: 11.5:1.
  • Fuel System: DFI with 32mm Keihin throttle bodies.
  • Ignition: TCBI with electronic advance.
  • Transmission: 6-speed with positive neutral finder.
  • Clutch: Assist & Slipper clutch.
  • Maximum Power: Approximately 44.8 hp (33.4 kW) @ 10,000 rpm.
  • Maximum Torque: Approximately 28 lb-ft (38 Nm) @ 8,000 rpm.
  • Performance Notes: The parallel-twin engine delivers a smooth and tractable powerband, ideal for both city commuting and spirited riding. The Assist & Slipper clutch significantly reduces lever effort and minimizes rear-wheel hop during aggressive downshifts.

Chassis & Handling:

  • Frame: Trellis, high-tensile steel.
  • Front Suspension: 41mm telescopic fork.
  • Rear Suspension: Bottom-link Uni-Trak with gas-charged shock, adjustable preload.
  • Front Brakes: Single 310mm petal disc with dual-piston caliper (ABS optional).
  • Rear Brakes: Single 220mm petal disc with dual-piston caliper (ABS optional).
  • Front Tire: 110/70-17.
  • Rear Tire: 150/60-17.
  • Handling Notes: The lightweight trellis frame and well-tuned suspension contribute to agile and predictable handling. The Ninja 400 excels in cornering, offering a confidence-inspiring ride. The relatively upright riding position enhances rider control and reduces fatigue.

Dimensions & Ergonomics:

  • Overall Length: 78.3 in (1,990 mm).
  • Overall Width: 28.0 in (710 mm).
  • Overall Height: 44.9 in (1,140 mm).
  • Wheelbase: 53.9 in (1,370 mm).
  • Seat Height: 30.9 in (785 mm).
  • Fuel Capacity: 3.7 gal (14 L).
  • Curb Weight: Approximately 364 lb (165 kg) (ABS model).
  • Ergonomic Notes: The Ninja 400 strikes a balance between sporty and comfortable ergonomics. The seat is relatively comfortable for longer rides, and the handlebar positioning provides good leverage.

Performance & Practical Considerations:

  • Top Speed: Approximately 115-120 mph (185-193 km/h), depending on rider weight and conditions.
  • Acceleration: 0-60 mph (0-97 km/h) in approximately 4.5-5 seconds.
  • Fuel Economy: Approximately 50-60 mpg (4.7-3.9 L/100 km), depending on riding style.
  • Comfort: Generally comfortable for riders of various sizes. The seat is well-padded, and the riding position is relatively upright. However, extended highway rides may induce some fatigue.
  • Pricing: Variable depending on region and model year. Generally considered a competitive price point for its segment.
  • Handling: Agile and responsive. The Ninja 400 is easy to maneuver in tight spaces and excels in cornering.
  • Technology: Optional ABS, digital instrumentation, and LED lighting.
  • Real World notes: This bike is a fantastic all arounder. It is fun in the twisties, but can also be used for every day commuting. Because of its light weight it is very easy to move around in parking lots, and garages. The slipper clutch is a very nice feature.

Techy Rider Insights:

  • The Ninja 400’s parallel-twin engine is a testament to efficient power delivery. Its smooth torque curve makes it forgiving for newer riders while still offering enough punch for experienced enthusiasts.
  • The chassis design prioritizes balance and agility. The trellis frame provides a rigid platform, enhancing feedback and control.
  • The Assist & Slipper clutch is a valuable feature, especially for riders who enjoy aggressive downshifting. It minimizes rear-wheel chatter and improves stability.
  • The bikes electronics are simple. The bike is not loaded with rider aids, which many riders enjoy. This allows the rider to feel more connected to the machine.

In Conclusion:

The Kawasaki Ninja 400 is a well-rounded sportbike that offers a compelling combination of performance, handling, and practicality. It’s an excellent choice for riders seeking a versatile and enjoyable motorcycle. +++ title = “Kawasaki Ninja H2R: Detailed Specifications” date = “2025-02-17” description = “Kawasaki Ninja H2R: Detailed Specifications” tags = [ “Kawasaki”, “specs”, ] +++