This is a complete pair (four pieces total) of replacement baseplates for Biltwell Gringo S and Lane Splitter face shields. Using the Gen 2 kit on a Gen 1 Helmet will also allow you to fit a Gen 2 shield on any earlier Biltwell Gringo S or Lane Splitter helmets as well as being a direct replacement on Gen 2 helmets. If you don't know which generation you have, take a look at the instructions in the slideshow for details.