Kawasaki Ninja 400 Vs Ktm Rc 390 Top Speed

In the realm of entry-level sportbikes, the Kawasaki Ninja 400 and KTM RC 390 stand out as formidable contenders. These machines offer exhilarating performance and sharp handling, but how do they compare in terms of top speed? This comprehensive analysis will delve into the specifications, performance data, and real-world experiences to determine which motorcycle reigns supreme in the quest for ultimate velocity.

Engine and Power Output

The Kawasaki Ninja 400 boasts a 399cc parallel-twin engine that produces 49 horsepower at 10,000 rpm and 28 lb-ft of torque at 8,000 rpm. The KTM RC 390, on the other hand, features a 373cc single-cylinder engine that generates 43 horsepower at 9,000 rpm and 26 lb-ft of torque at 7,000 rpm. While the Ninja 400 has a slight edge in power output, the RC 390’s lighter weight (317 lbs vs. 366 lbs) gives it a potential advantage in acceleration.

Aerodynamics and Drag

Aerodynamics play a crucial role in determining top speed. The Ninja 400’s fully faired bodywork provides excellent wind protection and reduces drag, giving it an advantage over the less aerodynamic RC 390. The RC 390’s exposed engine and upright riding position create more drag, potentially hindering its top-end speed.

Gearbox and Final Drive

The Ninja 400 utilizes a 6-speed gearbox with a chain final drive, while the RC 390 employs a 6-speed gearbox with a slipper clutch and quick-shifter. The Ninja 400’s taller gearing provides a higher top speed potential, but the RC 390’s slipper clutch and quick-shifter allow for smoother and quicker gear changes, which can be beneficial in achieving maximum velocity.

Real-World Performance

Independent dyno tests have shown that the Kawasaki Ninja 400 can reach a top speed of approximately 112 mph, while the KTM RC 390 typically tops out at around 105 mph. These figures are consistent with real-world experiences, where the Ninja 400 consistently outperforms the RC 390 in terms of top speed.

Factors Affecting Top Speed

Several factors can influence the top speed of a motorcycle, including:

• Wind: Strong headwinds can significantly reduce top speed.
• Incline: Riding uphill reduces top speed, while riding downhill increases it.
• Weight: Heavier motorcycles have a lower top speed potential.
• Tire pressure: Underinflated tires increase drag and reduce top speed.

Summary: Top Speed Dominance

Based on the specifications, performance data, and real-world experiences, the Kawasaki Ninja 400 emerges as the clear winner in the battle for top speed supremacy. Its combination of higher power output, better aerodynamics, and taller gearing gives it a distinct advantage over the KTM RC 390. While the RC 390 offers impressive performance for its size, its top speed capabilities are ultimately limited by its lower horsepower and higher drag.

Quick Answers to Your FAQs

Q: What is the top speed of the Kawasaki Ninja 400?
A: The Kawasaki Ninja 400 has a top speed of approximately 112 mph.

Q: What is the top speed of the KTM RC 390?
A: The KTM RC 390 has a top speed of approximately 105 mph.

Q: Which motorcycle has better acceleration, the Ninja 400 or RC 390?
A: The RC 390 has better acceleration due to its lighter weight and higher torque-to-weight ratio.

Q: Which motorcycle is more fuel-efficient, the Ninja 400 or RC 390?
A: The Ninja 400 is more fuel-efficient, with an average fuel consumption of around 50 mpg, compared to the RC 390’s 40 mpg.

Q: Which motorcycle is better for long-distance riding, the Ninja 400 or RC 390?
A: The Ninja 400 is better for long-distance riding due to its more comfortable riding position and higher top speed.