TOP FEATURES

2019 KX450

Unrivaled

Absolutely nobody can exceed the championship legacy of Kawasaki and the KX™ motorcycle. KX owns more combined professional 250cc and 450cc AMA National Motocross and Supercross titles than any other manufacturer.

Dominate the

Holeshot

The first few seconds of the race are critical for getting ahead of the pack. With a more powerful engine and updated technology, the time from the starting gate to the first turn just got a lot quicker.

MASTER THE

PASS

The KX™450 combines unmatched engine power, suspension technology, and braking ability to overtake the competition on any part of the track.

SHAVE

LAP TIMES

Improvements in engine, chassis and traction performance result in faster lap times for the
2019 KX™450.

SCIENCE OF SUPERCROSS

KX
HISTORY

BE A PART OF

TEAM GREEN

Kawasaki’s Team Green™ provides unparalleled factory and trackside support to aspiring champions. Find all your answers about the Team Green program right here.

Kawasaki’s Team Green™ provides unparalleled factory and trackside support to aspiring champions. Find all your answers about the Team Green program right here.

LEVELS OF SUPPORT

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WHAT IS TEAM GREEN™?

Team Green™ is a revolutionary program that began in 1981 to provide trackside support to all amateur Kawasaki motocross racers at local, regional and national events across the country.

HOW DOES TEAM GREEN DIFFER FROM OTHER SUPPORT?

No other program has supported as many professional racers as Team Green™. From 1993 to 2018, Team Green graduates have won 20 AMA Supercross Championships. From Hall-of-Fame-caliber graduates like Jeremy McGrath, Ricky Carmichael and Ryan Villopoto to legends in the making, Team Green is committed to keeping our record of dominating the track intact.

WHAT KIND OF TRACKSIDE SUPPORT IS OFFERED?

The Team Green™ crew covers the entire country, attending nearly 50 events each year. Whether you’re on the factory team or you’re a weekend warrior, every Kawasaki racer receives the same level of support with technical assistance and emergency parts sales to keep you on the track.

HOW DO I FIND OUT IF THE TEAM GREEN™ TRUCK WILL BE AT MY RACE?

Please click here to see a full schedule of supported events

WHAT IS THE KAWASAKI CONTINGENCY PROGRAM?

To give riders the opportunity to earn money and pursue their racing goals, contingency dollars are up for grabs at over 400 events across the country. Kawasaki contingency dollars are applied to a MasterCard® that allows you to spend your earnings wherever MasterCard is accepted. Simply put, it pays to race a KX™. "Race Green, Earn Green."

WHAT ARE THE ELIGIBLE RACES AND HOW MUCH CAN I EARN?

Click here to find out which races are eligible for the Kawasaki Contingency Program and how much you can earn. Please note that the Kawasaki Contingency Program is updated periodically.

New Electric Start

Being able to restart your engine quickly after a stall can make or break a race. Powered by a compact and lightweight Li-ion battery and supported by an automatic centrifugal decompression system, now all it takes is the push of a button to start the KX™450.

More Powerful Engine

Increased peak power and a flatter torque curve come thanks in part to:

  • A new finger-follower valve train designed by Kawasaki’s World Superbike engineers
  • More aggressive cam profiles
  • Larger intake and exhaust valves
  • New lightweight bridged-box piston
  • Downdraft-style intake routing
  • A larger 44mm throttle body
  • Longer exhaust header pipe

New Hydraulic Clutch

Reduce lap times with Kawasaki’s first hydraulic clutch on the KX™450. The new clutch offers a more direct feel and an easier pull for lighter lever action, helping to reduce riding fatigue. As the clutch heats up during heavy use, minimal change in clutch play provides a more consistent and direct feel.

Launch Control

Factory-style launch control system helps to put the bike’s power to the ground for maximum acceleration at the start of the race, making the holeshot yours for the taking.

Improved Torque

A flatter torque curve makes it easier to get on the gas sooner, delivering smooth and powerful acceleration to pass the competition and keep you ahead of the pack.

More Powerful Brakes

The KX™450 delivers major stopping power when you need it most thanks to the new larger-diameter 250mm petal-shaped BRAKING® rear brake rotor that complements the oversized 270mm petal-shaped BRAKING® front brake rotor. A new front brake master cylinder offers better initial control and braking performance, while the new rear brake master cylinder and hose have been revised to reduce weight.

New Front Suspension

Updates to the KX™450 contribute to smooth suspension action and a better ride feel.

  • New SHOWA 49mm coil spring front fork with A-KIT Technology
  • Titanium oxide coated inner tubes and large 39mm damping pistons
  • New Showa Dimplush™ finish and Kashima Coat protect outer fork tubes against corrosion and prevent wear abrasion on the inner walls for a smoother ride
  • New larger-diameter 22mm front axle helps improve front traction

NEW UNI-TRAK® REAR SUSPENSION

Improved damping, increased traction and more precise rear suspension tuning come as a result of:

  • New SHOWA Compact Design rear shock: A-KIT technology with large 30mm compression adjuster
  • New slim aluminum perimeter frame and new hydroformed swingarm revise rigidity to increase rear traction
  • New 5mm offset shock layout to optimize downdraft-style intake

Improved Ergonomics

Redesigned bodywork better facilitates rider movement.

  • New lower fuel tank and flatter seat give the rider greater freedom of movement when changing riding position
  • New radiator shrouds are slimmer at the rider’s legs for improved grip
  • In-mold graphics for an ultra-smooth surface
  • New smooth surface engine covers
  • Nearly flush seams between the shrouds, seat and side covers for seamless contact points

ERGO-FIT® TECH

ERGO-FIT® adjustable handlebar mounting system and footpegs enable the perfect fit to help you comfortably ride with confidence.

Power Delivery

Choose engine settings to suit your riding style or track conditions with KX™450 DFI® couplers. This plug-and-play style system allows riders to quickly and easily select from three different pre-programmed fuel injection and ignition mapping settings. Fine tune your ECU setting with factory precision with the KX FI Calibration Kit*, featuring a handheld controller that enables riders to adjust fuel mapping and store presets for various track conditions without a PC.

*Sold seperately as Kawasaki Genuine Accessory

Redesigned Chassis

The updated lightweight aluminum perimeter frame and swingarm increase overall rigidity balance and contribute to precise cornering through excellent front-end feel and increased traction at the rear wheel.

Redesigned Footpegs

The new lighter footpegs are 5mm wider and positioned 3mm farther rearward, offering excellent grip and making it easier to weight the pegs.