This purple poppet was removed from a Gen 2 Fusion engine and has seen mild use. Despite that the poppet is in good condition with only mild cosmetic wear on the anodization. The poppet stem is pre-installed on a Rev 1 poppet seat, and requires a retaining o-ring for installation (included in this listing). Rev 1 poppet seats were originally in Gen 1 and 2 Fusion Engines, but are forwards compatible with Gen 3 systems as well. The change was made for ease of installation and manufacturing and has the same performance as the Rev 2 poppet. The poppet was cleaned and the ID o-ring was greased before re-assembly. Only the OD o-rings required greasing before installation.