Nolan N43 Trilogy Helmet Lava Grey L/Large With 6 different ways you can wear it, the Nolan N-43 Helmet is in a category of its own. It may well be the most versatile street motorcycle helmet on the market today. It also has some of the staple features like VPS and N-Com readiness that have made other helmets with the Nolan name on it so great. Pick one up today!Features. 6-in-1 design.