I have a Runva 12000lb winch on the ARB deluxe. I was concern about it fitting in, but no probs at all.
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A slight modification was needed to the opening where the rope comes out of the bar to suit the fairlead they supplied.
It had to be made slightly bigger cos the fairlead was offset.
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This is what I was winching out of, wasn't sure how well it would perform, with BA's help it worked hard without raising a sweat.
RUNVA was suggested by a fair few guys and thats what I went with.