2024 KX450 – Powerful, Agile, and Race-Ready Motocross Bike
The 2024 KX450 is a flagship motocross machine engineered for riders who demand top-tier performance, precision handling, and advanced technology. Featuring a 449cc liquid-cooled, DOHC 4-valve single-cylinder engine with a new downdraft intake and center exhaust layout, the KX450 delivers improved power across all RPM ranges and throttle positions. Its redesigned intake ports and symmetrical valve alignment optimize airflow for enhanced efficiency and throttle response.
Built on an all-new lightweight aluminum perimeter frame with optimized stiffness and geometry, the 2024 KX450 offers superior front-end feel, traction, and mass centralization. The bike’s Showa suspension includes a 49mm inverted coil-spring fork with 12 inches of travel and a linkage-assisted piggyback reservoir rear shock with 12.1 inches of travel, both fully adjustable for compression and rebound damping to suit any track condition.
Advanced electronics elevate the riding experience with selectable Power Modes, Kawasaki Traction Control (KTRC) with two levels plus off mode, and Launch Control Mode for improved holeshots. Riders can easily switch modes via handlebar controls and fine-tune settings using Kawasaki’s Rideology app via Bluetooth connectivity. The new mix-and-match braking system features a 270mm front Braking disc with Brembo caliper and a 240mm rear Sunstar disc with Nissin caliper, ensuring confident stopping power.
Key Features
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Redesigned 449cc DOHC 4-valve engine with center exhaust and downdraft intake for improved power and throttle response
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Lightweight aluminum perimeter frame optimized for stiffness and mass centralization
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Showa 49mm inverted coil-spring front fork and linkage-assisted piggyback reservoir rear shock with full adjustability
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Advanced electronics package including Power Modes, Kawasaki Traction Control (KTRC), and Launch Control Mode
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Bluetooth connectivity with Kawasaki Rideology app for on-the-fly engine tuning
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Mix-and-match braking system: 270mm front Braking disc with Brembo caliper, 240mm rear Sunstar disc with Nissin caliper
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ODI Lock-On medium-compound grips and Dunlop Geomax MX34 tires for enhanced control and traction
Specification
| Specification | Detail |
|---|---|
| Engine Type | 449cc liquid-cooled DOHC 4-valve single |
| Bore x Stroke | 96.0 x 62.1 mm |
| Compression Ratio | 12.5:1 |
| Fuel System | EFI with 44mm Keihin throttle body |
| Starting System | Electric |
| Transmission | 5-speed, return shift |
| Clutch | Hydraulically actuated wet multi-disc |
| Frame | Aluminum perimeter |
| Front Suspension | Showa 49mm inverted coil-spring fork, 12.0 in travel, adjustable compression/rebound |
| Rear Suspension | Linkage-assisted Showa piggyback reservoir shock, 12.1 in travel, fully adjustable |
| Front Brake | 270mm Braking disc with Brembo caliper |
| Rear Brake | 240mm Sunstar disc with Nissin caliper |
| Front Tire | 80/100 x 21 Dunlop Geomax MX34 |
| Rear Tire | 120/90 x 19 Dunlop Geomax MX34 |
| Seat Height | 960 mm (37.8 in) |
| Ground Clearance | 345 mm (13.6 in) |
| Weight (wet) | 112.6 kg (248.2 lbs) |
| Fuel Capacity | 6.2 liters (1.64 gallons) |
| MSRP | $10,399 |
The 2024 Kawasaki KX450 combines race-proven power, cutting-edge electronics, and refined chassis design to deliver a motocross bike capable of winning championships. Its blend of performance, technology, and rider-focused features make it a top choice for serious riders looking to elevate their track performance.
Kawasaki KX450 Stop-Sale Recall 2025
In 2025, Kawasaki issued a stop-sale recall on the Kawasaki KX450 due to a potential defect in the crankshaft primary gear’s surface durability. This issue could cause gear failure, increasing the risk of a crash. Dealers were instructed to halt sales immediately, and affected owners are advised to contact authorized Kawasaki dealerships for a free repair. The recall impacts models sold in late 2024 and early 2025.
2025 KX450
The 2025 Kawasaki KX450 is a high-performance motocross bike designed for riders seeking power, agility, and advanced technology. It features a 449cc liquid-cooled DOHC engine with a new downdraft intake system that enhances airflow and throttle response. The lightweight aluminum perimeter frame improves handling and mass centralization, while the Showa suspension system offers fully adjustable front and rear shocks for superior control on any terrain.
Equipped with advanced electronics like selectable power modes, traction control, and launch control, the 2025 KX450 delivers race-ready performance for riders of all skill levels.
2023 KX450 – High-Performance Motocross Bike
The 2023 Kawasaki KX450 is a powerful and agile motocross bike featuring a 449cc liquid-cooled DOHC engine with electric start. Its lightweight aluminum frame and Showa long-travel suspension deliver sharp handling and excellent traction. Equipped with a hydraulic clutch, advanced brakes, and customizable ergonomics, the KX450 offers race-ready performance for riders looking to dominate the track.
2015 KX450 – Powerful and Agile Motocross Bike
The 2015 Kawasaki KX450 is a high-performance motocross bike featuring a 449cc liquid-cooled four-stroke DOHC engine with fuel injection for smooth and powerful acceleration. It comes equipped with a lightweight aluminum perimeter frame and advanced Showa suspension, including an inverted SFF-Air TAC front fork and a UNI-TRAK rear shock, both offering extensive adjustability for precise handling.
With a curb weight of 247 lbs and a seat height of 37.8 inches, the 2015 KX450 balances agility and stability on the track. Its powerful braking system includes a 270mm front and 240mm rear petal disc brake for confident stopping power. Designed for riders who demand speed and control, the 2015 KX450 remains a top choice in the motocross world.
Kawasaki 2024 KX450 for Sale
Looking for a powerful and race-ready motocross bike? The Kawasaki KX450 is a top choice for riders seeking high performance, agility, and advanced technology. Available in new and used models, the KX450 features a 449cc liquid-cooled DOHC engine, lightweight aluminum frame, and premium Showa suspension for superior handling on the track.
You can find 2023 and 2024 Kawasaki KX450 models for sale across various platforms, with prices typically ranging from around $4,000 to $10,500 depending on year, condition, and location.
Whether you want a brand-new bike or a well-maintained used model, there are plenty of options available from private sellers and dealerships worldwide.
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