SLP Power Dome Billet Head Set - All Elevations - 12-900

9R rock solid performance gains! With +3 horsepower on the peak and an astonishing 4-8 additional horsepower in the midrange, the new SLP PowerDome head set utilizes the latest combustion chamber design to make this engine consistent, extremely responsive and very rideable. Made from billet aluminum for a durable and dependable design with interchangeable combustion chambers for ease of service. Compatible with 91 octane fuel.