This Device Is For Karting Only - Not Auto Racing!!!
Providing unmatched functional neck support, the R4 race collar was designed to help minimize the risk of axial compression, hyperflexion, hyperextension and lateral hyperflexion of the neck. With an easy front entry system and soft rubberized edges for increased comfort, the R4 is a winning product.
The R4's low profile design provides superior range of motion of the head, has adjustable sizing and is very comfortable & lightweight.
Adult size: For drivers over 105 lbs. or over 5'3" tall
Collar Weight: 22 oz.