Two High-Revving Inline-Four Machines Promise Thrilling Performance, Premium Technology, and Track-Inspired Riding, but Which One Is the Better Choice?
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The return of compact inline-four sportbikes has reignited excitement among motorcycle enthusiasts. Riders who miss the screaming soundtrack and exhilarating top-end performance of four-cylinder engines now have more choices than ever before. Two motorcycles leading this revival are the ZXMoto 500RR and the Kawasaki Ninja ZX-4RR.
Although both motorcycles feature high-revving inline-four engines and supersport-inspired styling, they target riders in slightly different ways. The ZXMoto 500RR enters the market with a larger engine, impressive power figures, and premium equipment at an attractive price point.
Meanwhile, the Kawasaki Ninja ZX-4RR builds on Kawasaki’s long-standing racing heritage with proven engineering, refined electronics, and exceptional track capability. If you’re deciding between these two exciting middleweight sportbikes, here’s how they compare.
Engine and Performance
ZXMoto 500RR
The 500RR is powered by a 470cc liquid-cooled DOHC inline-four engine that produces 84 hp at 13,500 rpm and 46 Nm of torque at 11,500 rpm. Paired with a six-speed gearbox, assist & slipper clutch, and bidirectional quickshifter, the engine delivers strong acceleration while maintaining the high-revving character enthusiasts love. On paper, the ZXMoto holds the advantage in both horsepower and torque thanks to its larger displacement. The extra power translates into stronger acceleration and more effortless overtaking on highways.
Kawasaki Ninja ZX-4RR
The ZX-4RR uses a 399cc liquid-cooled DOHC inline-four engine producing up to 75 hp (79 hp with Ram Air) and 39 Nm of torque. Like the ZXMoto, it features a six-speed transmission, assist and slipper clutch, and Kawasaki Quick Shifter (KQS), allowing seamless upshifts and downshifts during spirited riding. It is famous for its incredibly high-revving nature and razor-sharp throttle response. Riders who enjoy chasing the redline and extracting every bit of performance from a motorcycle will appreciate Kawasaki’s race-inspired engine character.
Features and Technology
ZXMoto 500RR
The 500RR comes equipped with a full-colour TFT display, multiple riding modes, cornering ABS supported by a six-axis IMU, quickshifter, fully adjustable USD front suspension, and a striking single-sided aluminium swingarm that gives it a premium appearance.
Kawasaki Ninja ZX-4RR
The ZX-4RR counters with Kawasaki’s proven electronics package. Riders get Kawasaki Traction Control (KTRC), Power Modes, integrated riding modes, Kawasaki Quick Shifter (KQS), assist and slipper clutch, 4.3-inch full-color TFT display with smartphone connectivity, and a high-end fully adjustable Showa BFRC lite rear shock as found on the ZX-10R.
Both motorcycles are exceptionally well equipped for the segment. The ZXMoto focuses on delivering premium hardware and value, while Kawasaki emphasises refinement and race-developed electronics.
Ergonomics and Comfort
ZXMoto 500RR
The 500RR has an 800 mm seat height and weighs approximately 168 kg, making it noticeably lighter than the Kawasaki. Its lightweight chassis and aggressive ergonomics contribute to quick direction changes and agile handling, particularly on twisty roads and race circuits.
Kawasaki Ninja ZX-4RR
The ZX-4RR also features an 800 mm seat height, but its weight of approximately 188 kg gives it a more planted and stable feel, particularly at higher speeds. Kawasaki has carefully balanced the riding position to remain sporty without becoming overly demanding during daily use.
If nimble handling is your priority, the ZXMoto has an advantage due to its lighter weight. Riders who prefer a more refined and stable chassis may find the ZX-4RR more confidence-inspiring.
Specifications Comparison Table
| Specification | ZXMoto 500RR | Kawasaki Ninja ZX-4RR |
|---|---|---|
| Engine | 470cc, liquid-cooled, Inline-Four | 399cc, liquid-cooled, Inline-Four |
| Maximum Power | 84 hp | 75 hp (79 hp with Ram Air) |
| Maximum Torque | 46 Nm | 39 Nm |
| Transmission | 6-speed | 6-speed |
| Front Suspension | 41mm inverted (upside-down) fully adjustable front forks | 37mm inverted Showa SFF-BP fork with adjustable spring preload |
| Rear Suspension | Fully adjustable rear monoshock | Showa BFRC lite gas-charged shock with piggyback reservoir, fully adjustable |
| Front Brake | Twin 300mm floating discs, radially mounted calipers with ABS | 290mm discs, dual radial-mount 4-piston monobloc calipers with ABS |
| Rear Brake | Single 220mm disc, 2-piston opposed caliper with ABS | Single 220mm disc, 1-piston caliper with ABS |
| Seat Height | 800 mm | 800 mm |
| Weight | 168 kg | 188 kg |
| Fuel Tank Capacity | 15 liters | 15 liters |
| Top Speed | 235 km/h | 230+ km/h |
Who Is Each Bike For?
The ZXMoto 500RR is ideal for riders looking for maximum performance and outstanding value. Its larger inline-four engine, lightweight chassis, premium components, and aggressive styling make it an appealing option for riders who want a supersport motorcycle with serious performance without stepping into the 600cc category.
The Kawasaki Ninja ZX-4RR is aimed at riders who value Kawasaki’s racing heritage and proven engineering. Its sophisticated electronics package, refined chassis, and high-revving engine make it a fantastic choice for enthusiasts who enjoy track days, canyon roads, and a motorcycle developed with decades of supersport experience behind it.
Final Verdict
The ZXMoto 500RR and Kawasaki Ninja ZX-4RR represent two exciting interpretations of the modern inline-four sportbike.
If you prioritise higher horsepower, stronger torque, lighter weight, and exceptional value, the ZXMoto 500RR is difficult to ignore. Its larger 470cc engine and premium specification make it one of the most exciting newcomers in the segment.
On the other hand, if you want proven reliability, refined electronics, race-developed handling, and the confidence that comes with Kawasaki’s supersport pedigree, the Ninja ZX-4RR remains one of the best motorcycles in its class.
Ultimately, both motorcycles deliver an exhilarating inline-four experience. The better choice depends on whether you value raw performance and value for money, or brand heritage and engineering refinement.
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