If you have a Rhino-Rack Vortex or Heavy Duty Crossbar system and want to mount a number of Rhino's kayak and canoe vehicleriers Includesding the S510, S512 or the Kayak Extension Piece S512X you will need the KC-FK8 fitting kit. This fitting kit will also suit the Thule Aero and Thule Aeroblade cross bars.

• Use The Long Channel Nuts To Fit The Vortexes C-Channel
• Also Suitable To Fit Thule Aero And Aeroblade Bars
• Attach The S510/S512/S511X/S512X To Rhino HD Bars
• Comes With All The Necessary Items Required
• 1 Year Warranty