Alpinestars SuperTech S-M8 Solid Gloss White Helmet Size:XL Usually the required modification is

Usually the required modification is 1 rear sprocket tooth less than stock

where the boot is in contact with the bike and improves grip and feel

and a detachable waterproof liner

Can be used with stock head pipe

Soft 3D textured fabric comfort collar construction

Alpinestars SuperTech S-M8 Solid Gloss White Helmet Size:XL Usually the required modification isAlpinestars SuperTech S M8 Solid Gloss White Helmet A smooth, attractive, profile which is streamlined and free of any external channels and features that might act as a load point in an impact, or compromise the overall integrity of the construction The surface curvature promotes reduced friction on impact, allowing deflection and the most efficient transfer of energy to protect the rider's head from direct force to the skull and referred to the neck