Ayrton Winitana

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I'm looking to purchase an additional post for current sled As far as I know, its a PRO2 Sled Reason I'm not 100% sure of its generation is because we've be told many different things about it. If someone could specify what generation it is that would be much appreciated Also if anybody knows about where I should be looking, feel free to point me in the right direction. As attached cheers