
Part measures 4″ outside diameter. Make sure it will fit as many of the China made tubes are not all sized consistently…

GN6 Square Straight Kingpin Coupler
Part measures 4 1/2″ outside to outside. Make sure it will fit as many of the China made tubes are not all…

GN7 Square Straight Kingpin Coupler
Part measures 4″ outside to outside. Make sure it will fit as many of the China made tubes are not all sized…
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