Key performance
Technical specifications
- Compression ratio
- 12.0:1 → 12.5:1
- Valves/cylinder
- — → 4
- Camshafts
- — → 2 ACT
- Fuel system
- Carburettor. Keihin FCR40 → Injection. DFI with 43mm Keihin throttle body
- Ignition
- Multi-map digital CDI with throttle position sensor (K-TRIC) → Digital DC-CDI
- Frame
- — → Aluminum perimeter
- Front suspension
- 48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. → 48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment
- Rear suspension
- UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in. → UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload
- Front wheel travel
- — → 315 mm (12.4 inches)
- Rear wheel travel
- — → 315 mm (12.4 inches)
- Front brakes
- Single disc → Single disc. Petal disc with 2-piston caliper
- Rear brakes
- Single disc → Single disc. Petal disc with single-piston caliper
- Front tyre
- 90/90-21 → 80/100-21
- Seat height
- 965.00 mm → 955.00 mm
- Wheelbase
- 1486.00 mm → 1481.00 mm
- Ground clearance
- 345.00 mm → 330.00 mm
- Length
- 2184.00 mm → 2179.00 mm
- Height
- 1280.00 mm → 1275.00 mm
- Fuel capacity
- 7.19 L → 6.21 L
- Weight
- — → 108.70 kg
- Dry weight
- 99.80 kg → —
- New price
- — → 8 899 €
Engine
- Displacement
- 449 cc
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 12.5:1
- Bore × stroke
- 96.0 x 62.1 mm (3.8 x 2.4 inches)
- Valves/cylinder
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection. DFI with 43mm Keihin throttle body
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Ignition
- Digital DC-CDI
Chassis
- Frame
- Aluminum perimeter
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- Front suspension
- 48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment
- Rear suspension
- UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload
- Front wheel travel
- 315 mm (12.4 inches)
- Rear wheel travel
- 315 mm (12.4 inches)
Brakes
- Front brakes
- Single disc. Petal disc with 2-piston caliper
- Rear brakes
- Single disc. Petal disc with single-piston caliper
- Front tyre
- 80/100-21
- Rear tyre
- 120/80-19
Dimensions
- Seat height
- 955.00 mm
- Wheelbase
- 1481.00 mm
- Ground clearance
- 330.00 mm
- Length
- 2179.00 mm
- Width
- 820.00 mm
- Height
- 1275.00 mm
- Fuel capacity
- 6.21 L
- Weight
- 108.70 kg
- New price
- 8 899 €
Overview
The 2016 Kawasaki KX 450F is a declaration of war in aluminum and carbon. It is not a motorcycle; it is an instrument, a tool forged for a single task: to dominate a motocross circuit. At €8899, you are not buying a vehicle; you are investing in a competition weapon, the lightest in its class at 108.7 kg fully fueled. This figure is not a detail; it is the foundation of its character. A perimeter aluminum frame as thin as it is aggressive, a reworked 449 cc single-cylinder engine for breathing and response – everything has been put on a diet. The result is a machine that moves almost by thought, where every gram removed translates into a fraction of a second gained in direction changes.

Its heart, this four-stroke single-cylinder, is a study in brutal efficiency. With a bore of 96 mm and a compression ratio of 12.5:1, it is designed to deliver its power in a linear and controllable manner, a Kawasaki philosophy that has earned 32 AMA Supercross titles. DFI injection technology and an adjustable ECU, including a launch control, are concessions to modernity that allow you to adapt the engine's character to the conditions and the rider. The optional KX FI calibration kit even takes this personalization to the level of an official team. But the essential remains this feeling of constant propulsion, of available torque, which means that the KX 450F is never behind an intention.
The chassis is a sermon on precision. The 48 mm inverted Kayaba fork, with its DLC-treated tubes to reduce friction, and the Kayaba shock with its 50 mm piston, offer an almost intimidating range of adjustments – 22 positions of compression, 33 of rebound. This sophistication is not a luxury; it is necessary to master the violence of ruts and whoops. Petal disc brakes, with a diameter of 270 mm at the front, offer disproportionate braking power for such a light weight, a feel that allows for trajectory adjustments to the millimeter. The 80/100-21 and 120/80-19 tires are the final point of contact with earth that waits for no mistakes.
This Kawasaki KX 450F is a no-compromise machine for the competition rider. Its ergonomics, with a four-position adjustable handlebar and adjustable footrests, and its seamless seat facilitate body movements in combat. The 6.2-liter fuel tank and 330 mm ground clearance speak of intense but short sessions, of sprints where energy management is crucial. Its minimalist design, with a redesigned radiator and alumite green accents, is not a stylistic exercise but an affirmation of identity. It is compact, aggressive, ready.
Compared to its contemporary rivals, the Honda CRF450R or the Yamaha YZ450F, the Kawasaki stands out with this obsession with weight and this sophistication of settings. It requires a rider who knows not only how to push, but also how to analyze and adjust. It is not the easiest motorcycle; it may be the most precise. For the serious competitor, the one who aims for national championship podiums, it represents a tangible advantage. For the occasional rider, it would be overwhelming, too sharp, too demanding of attention. The 2016 KX 450F does not offer free pleasure; it offers the possibility of victory, and for its audience, that is the only sensation that counts.
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