The NiteRider® Helmet mount for all systems that use the slider mounting clip SYSTEM COMPATIBILITYPro SeriesHID SeriesClassic Plus & SelectEvolution & Digital EvolutionHeadTrip & Digital HeadTripTrailRat & TrailRat SelectRoadRatDigital Patrol LEDDigital PatrolPre-2001 systems WARRANTYThis NiteRider® accessory is backed by NiteRider's lifetime warranty that covers any defects in material and workmanship.