Muscle bike or Musclebike are kids 20" bicycles or 16" front wheel styled after Dragster's & Muscle Car's from the mid 60's to early 70's. Bananna seat & sissy bar for bucket seat & roll bar, rear slick,, sginal light's, console shifter, even some with wheelie bar.

Sport bike's looks with cruiser's drivetrain. usually a v-twin engine. Does not rev to high RPM like kawasaki bikes. Strong, fast bikes with good performance.