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What's the % of under-drive on these? As in, I know RE is 12% and AA is 16%.
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A91 Edition Supra | Armytrix | Rays
M3 Saloon | Akrapovic EVO | B&G Sport
M3 Saloon | VF540 | Klässen ID M52-R | Akrapovic | Vorsteiner GTS5 | KarbonWerke CSL [SOLD]
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