If you have a Rhino Heavy Duty Crossbar system and want to mount a number of Rhino's kayak and canoe carriers including the S510, S512 or the Kayak Extension Piece S512X you will need the KC-FK8 fitting kit.
If you have a Rhino Heavy Duty Crossbar system and want to mount a number of Rhino's kayak and canoe carriers including the S510, S512 or the Kayak Extension Piece S512X you will need the KC-FK8 fitting kit.