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The 2024 Kawasaki Ninja 500 is not a ground-up replacement for the Ninja 400. It is an evolution of the same lightweight sportbike formula, with a longer-stroke engine, revised styling, updated instruments and a modest increase in weight.
For U.S. buyers, the comparison is between the 2024 Ninja 500 and the 2023 Ninja 400, since Kawasaki replaced the 400 with the 500 for the 2024 model year. The biggest functional difference is the engine: the Ninja 500 makes more torque and feels stronger through the middle of the rev range, while the Ninja 400 remains very similar in size, chassis layout and riding position.
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2024 Ninja 500 vs. 2023 Ninja 400: specifications
| Specification | 2024 Ninja 500 | 2023 Ninja 400 |
|---|---|---|
| Engine displacement | 451cc parallel twin | 399cc parallel twin |
| Bore × stroke | 70.0 × 58.6mm | 70.0 × 51.8mm |
| Kawasaki technical-review power | 38.3kW at 10,000 rpm | 35.0kW at 10,000 rpm |
| Kawasaki technical-review torque | 42.6Nm at 7,500 rpm | 37.0Nm at 8,000 rpm |
| U.S.-listed peak power | 51.0 hp at 10,000 rpm | Not listed on the U.S. specification sheet |
| U.S.-listed peak torque | 31.7 lb-ft at 7,500 rpm | Not listed on the U.S. specification sheet |
| Seat height | 30.9 inches | 30.9 inches |
| Wheelbase | 54.1 inches | 53.9 inches |
| Fuel capacity | 3.7 gallons | 3.7 gallons |
| Front suspension travel | 4.7 inches | 4.7 inches |
| Rear suspension travel | 5.1 inches | 5.1 inches |
| Rear tire | 150/60-17 | 150/60-17 |
| Curb weight, ABS | 374.9–377.1 lb | 366.0 lb |
| Ground clearance | 5.7 inches | 5.5 inches |
The figures vary slightly by equipment and 50-state specification, but the pattern is clear: the Ninja 500 adds engine output without substantially changing the motorcycle’s dimensions.
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The Ninja 500 does not have a literal 500cc engine. Its liquid-cooled parallel twin displaces 451cc, compared with 399cc for the Ninja 400.
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Kawasaki kept the 70.0mm bore but increased stroke from 51.8mm to 58.6mm. That 6.8mm increase accounts for most of the displacement gain. Kawasaki also revised the crankshaft, connecting rods, pistons, balancer shaft, flywheel and airbox configuration.
On Kawasaki’s technical-review comparison, the 500 produces 38.3kW and 42.6Nm, versus 35.0kW and 37.0Nm for the 400. That works out to approximately 9.4% more power and 15.1% more torque in the comparison data.
The extra torque is the more important everyday difference. The Ninja 500 should require fewer downshifts when accelerating onto a highway, passing traffic or climbing a hill. It still has the rev-happy character expected from a small parallel twin, but it does not need to be worked quite as hard as the Ninja 400.
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Both motorcycles already have an assist-and-slipper clutch
The Ninja 500 uses an Assist & Slipper clutch, but this is not a new feature compared with the Ninja 400. The 2023 Ninja 400 also had one.
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The system reduces clutch-lever effort during normal riding and helps limit rear-wheel hop during aggressive downshifts. Kawasaki revised clutch-related components for the larger engine, but describing the Ninja 500 as the first of the two to receive a slipper clutch is incorrect.
Chassis and dimensions are almost unchanged
The Ninja 500 retains the Ninja 400’s basic high-tensile-steel trellis-frame concept, conventional 41mm telescopic fork and horizontal back-link rear suspension. Both motorcycles have preload-adjustable rear shocks.
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The Ninja 500 is heavier. Compared with ABS-equipped versions, the difference is roughly 9 to 11 pounds, depending on the exact 50-state configuration. That is noticeable when moving the motorcycle around a garage, but it is not a major change once riding.
Suspension travel and tire sizes are also effectively carried over:
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- 41mm front fork with 4.7 inches of travel
- Horizontal back-link rear suspension with 5.1 inches of travel
- 110/70-17 front tire
- 150/60-17 rear tire
The 150/60-17 rear tire is not exclusive to the Ninja 500; it was also listed for the U.S.-spec 2023 Ninja 400. Claims that the 500 alone gained a wider rear tire are generally based on outdated or market-specific information.
Styling and lighting are obvious visual differences
The Ninja 500 receives new bodywork with a larger-volume fairing and styling closer to Kawasaki’s newer Ninja family. Its compact LED headlights and LED taillight make the front and rear ends look more modern than the Ninja 400’s arrangement.
Kawasaki also revised the seat shape and made small changes to the riding position. These changes do not transform the ergonomics, however. The unchanged seat height and closely related chassis mean that riders familiar with the Ninja 400 should find the Ninja 500 immediately recognizable.
The standard Ninja 500 gets connected LCD instruments
Electronic equipment is another meaningful upgrade. The standard 2024 Ninja 500 uses a high-contrast full LCD instrument panel with Bluetooth connectivity through Kawasaki’s RIDEOLOGY THE APP.
Depending on the function supported, the display can show gear position, fuel level, estimated remaining range, current and average fuel consumption, coolant temperature, clock, service information and notifications.
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The 2023 U.S. Ninja 400 used a conventional LCD cluster and did not list the Ninja 500’s smartphone-connectivity package. This gives the 500 a more current ownership experience even though its underlying chassis remains familiar.
Do all Ninja 500 models have ABS and a TFT display?
No. The U.S. 2024 lineup included both non-ABS and ABS versions. ABS was not standard on every Ninja 500.
The standard Ninja 500 uses LCD instrumentation. The full-color TFT display belongs to the higher-grade Ninja 500 SE ABS, so the statement that “the Ninja 500 has a TFT dash” needs to specify the SE model.
What the Ninja 500 SE ABS adds
- Full-color TFT instrument display
- KIPASS proximity key system
- USB-C outlet
- Larger clear windshield
- LED rear turn signals
- Pillion-seat cover
- Frame sliders
- Tank pad and knee pads
- Radiator screen
The SE is therefore more than a color or graphics package. It adds convenience and protective equipment, but it also costs substantially more than the standard motorcycle.
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| Model | Original U.S. MSRP |
|---|---|
| 2024 Ninja 500 | $5,299 |
| Ninja 500 KRT Edition | $5,499 |
| Ninja 500 ABS | $5,699–$5,899 |
| Ninja 500 SE ABS | $6,399 |
| Ninja 500 SE 40th Anniversary Edition ABS | $6,599 |
| 2023 Ninja 400 non-ABS | $5,299–$5,499 |
| 2023 Ninja 400 ABS | $5,699–$5,899 |
Original pricing shows why the Ninja 500 replaced rather than radically repositioned the Ninja 400. Comparable versions occupied nearly the same price bands, while the 500 added engine capacity and newer electronics.
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- 3.Motorbike jacket,adjustable cuff,collar,hem,provides maximum mobility so you can focus on the road and ride comfortably.Two external pocket guard your valuables with zipper protection,prevent your valuable falling off from pockets.
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- 5.Windproof motorcycle jacket is good for all 4 seasons,for cold weather motorcycle jacket keep the thickened cotton liner attached,in hot summer weather simply remove the liner.
Which one should you buy?
Choose the Ninja 500 if you want the newer model, stronger midrange torque, updated styling, connected instruments or access to the well-equipped SE ABS version. It is also the natural choice for riders buying new from Kawasaki, since the 400 was replaced in the U.S. lineup.
Choose a Ninja 400 if you find a clean used example at a meaningful discount. Its compact dimensions, 30.9-inch seat, capable chassis and assist-and-slipper clutch remain relevant. The 400 is not made obsolete by the 500; it simply gives up some acceleration and modern equipment.
For a used-bike shopper, condition and service history should outweigh the badge. A well-maintained Ninja 400 with good tires and documented maintenance can be a better purchase than a neglected Ninja 500.
Common claims that need qualification
| Claim | More accurate explanation |
|---|---|
| “The Ninja 500 has a 500cc engine.” | It has a 451cc engine. |
| “The Ninja 500 is completely new.” | The engine and bodywork are substantially revised, but the platform evolves from the Ninja 400. |
| “Every Ninja 500 has ABS.” | U.S. non-ABS versions were available. |
| “Every Ninja 500 has a TFT display.” | The standard model uses LCD instruments; TFT is an SE ABS feature. |
| “The 500 is much taller.” | Both motorcycles have a 30.9-inch seat height. |
| “The Ninja 400 lacked a slipper clutch.” | The 2023 Ninja 400 already used an Assist & Slipper clutch. |
FAQ
Is the 2024 Kawasaki Ninja 500 much faster than the Ninja 400?
It is stronger rather than radically faster. Kawasaki’s comparison data shows approximately 9.4% more power and 15.1% more torque, with the largest practical benefit in low- and midrange acceleration.
Is the Ninja 500 actually 500cc?
No. The 2024 Ninja 500 uses a 451cc liquid-cooled parallel-twin engine. Its displacement comes mainly from a longer 58.6mm stroke, while the bore remains 70.0mm.
Is the Ninja 500 taller or heavier than the Ninja 400?
The seat height is unchanged at 30.9 inches. The Ninja 500 is heavier by roughly 9 to 11 pounds when comparable ABS models are compared.
Should you buy a Ninja 500 instead of a used Ninja 400?
Buy the 500 for its stronger engine, newer styling, connected LCD display and available SE equipment. A clean Ninja 400 can be the better value if its price is substantially lower and its maintenance history is strong.
The Bottom Line
The 2024 Kawasaki Ninja 500 is a revised Ninja 400 platform, not a completely new motorcycle. Its 451cc longer-stroke engine delivers more useful torque, while new bodywork and connected instrumentation make it feel newer. The chassis dimensions, seat height, suspension layout and tire sizes remain closely related. For new buyers, the Ninja 500 is the more capable and current choice; for used-bike shoppers, a discounted, well-maintained Ninja 400 still makes a strong case.
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