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A battle of the ages, two wheels versus four – what will take the chequered flag first? In this showdown, we have some of the fastest fuel-powered derivatives representing each. In the corner of two-wheel drive is the Yamaha R1 while Porsche’s ludicrous 991.2 generation 911 GT2 RS represents the latter – watch to find out which of these purpose-built sports machines can cross the finish line at Killarney Raceway first!
