This is a brand new, genuine factory OEM Harley-Davidson Screamin' Eagle Milwaukee-Eight (M8) Stage II Torque Camshaft Installation Kit.
The centerpiece of this performance upgrade package is the high-performance Screamin' Eagle SE8-447 torque camshaft (stamped with model code SE8-447 on the shaft face and labeled with internal part number 25400199-SUR on the inner storage box). Designed to deliver a massive increase in low-to-mid range torque, this kit lets you wake up your engine exactly where you ride the most.
Condition & Product Completeness (Please Read):

3. COMPATIBILITY / FITMENT
Engineered specifically as a direct bolt-on performance upgrade for Milwaukee-Eight (M8) air/oil-cooled and Twin-Cooled V-Twin engines:
Note: Requires proper ECM calibration tuning with an interface tool upon installation to ensure correct fuel mapping and maximum output parameters.