The Evolution engine was born from the ironhead and the shovelhead engines. Heritage from legendary engines. The Evolution engine is often also called the Blockhead engine. The engine on the Forty Eight model is rubber mounted.
The 2015 Forty-Eight from Harley Davidsons Sportster series combines fat features with slenderness in this low bruiser, made for riding in the city. The front wheel has the archetypal "fat" look that is both wide and tall, creating a commanding presence on the streets.