The LS2 FF901 Advant X builds on its popular predecessor FF901 Valiant X with a number of visible and noticeable changes. In particular, this one features a different material, as well as visible exterior tweaks. Like its predecessor, the FF901 offers excellent value for money due to its all-round character. The helmet can be fully opened, giving you the feel of a jet helmet without compromising the safety of the wearer. Rider type and fit Due to d.