This is the worlds fastest bike having top speed of more than 600 km/h.dodge’s claims of a hypothetical top speed of 300 to 420 miles per hour (480 to 680 km/h), probably based on horsepower and gearing calculations, were debunked by the motorcycling and automotive media. No road tests of the Tomahawk have ever been published. Hand-built replicas of the Tomahawk were offered for sale through the Neiman Marcus catalog at a price of US$555,000, and up to nine might have sold.