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What is the fastest 4 stroke dirt bike?

Kawasaki KX450X

The Kawasaki KX450X is a motocross bike produced by Kawasaki since 2019. It is powered by a 449 cc (27.4 cu in) single-cylinder four-stroke engine. The KX450X is designed for closed-course off-road racing, and is not street legal.

The KX450X is the fastest 4-stroke dirt bike on the market, with a top speed of 86 mph (139 km/h). It is also one of the lightest, weighing only 227 lbs (103 kg). The KX450X is a well-rounded bike that offers excellent performance, handling, and reliability.

Additional features of the Kawasaki KX450X include:

* Electric start

* Hydraulic clutch

* Air-adjustable Showa BFF front forks

* Showa BFRC rear shock

* Three-way handlebar adjustable positions

* Renthal Fatbar handlebars

* Renthal grips

* Pro Taper chain guide

* Dunlop MX33 tires

* Green finish with black and white graphics

The Kawasaki KX450X is an outstanding dirt bike that is ideal for experienced riders who are looking for the best possible performance.