I think most came with the steel setup from standard but they did start changing over to ally sometime after '02 I think as my S4 had a steel basket. You should notice that the bike revs up a little quicker as you've removed a large amount of rotating mass from the engine.
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Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage
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