PCI Race Radios Necksgen Rev2 Carbon Neck Restraint The PCI Race Radios Necksgen Rev2 Carbon Neck Restraint is one of the lightest, most efficient neck restraints on the market. Manufactured from carbon fiber in the Usa, the neck restraint combines comfort and strength while remaining lightweight. Its distinctive low-profile design makes it easier to remove in an emergency. Features: SFI 38.1 Frontal Head Restraint Carbon Fiber construction Adjustable tether makes setting your slack and range of motion quick and simple Quick Release Helmet Hardware Unique single hand quick eject helmet attachment system. Full range of head motion Includes Hardware Made in the USA