If more is what you want, more is what you'll get.

Since the beginning, Harley-Davidson® motorcycle riders have felt the pull to amp up their powertrain performance. Greater acceleration, increased passing power, or just more of that rip roaring, raw Harley-Davidson exhaust sound.

Building a performance engine can be intimidating, but you don't have to start from scratch. A factory-engineered Screamin' Eagle® Stage upgrade is the place to start with complete, street compliant performance configurations for the increased torque and horsepower you are looking for.