Brand: Bell Racing
These genuine Bell vents are the familiar "sliding door" design, normally positioned just above the eyebrows. This new v.10 design is the same as supplied on SA2010 Bell full-face helmets (except BR.1 and forced air helmets). The sides are sloped for improved aerodynamics over the older version. The hole size is unchanged, but the overall footprint is 5/64" (2mm) larger in both length and width. Set of 2 vents is enough for one helmet.