---3" - 2x 2.25" bore with twin 2.5" tailpipes ---Free flowing system to get the most from the 6 cylinder N52 Engine ---Twin 2.5" Polished tailpipes to fit the OEM rear valance ---Manufactured from Mandrel bent T304 grade stainless steel ---Engineered to improve throttle response and increased power and torque across the entire RPM range Fitment: ---BMW Z4 E85 E86 2.5 / 3.0 N52 engine 2004-2008 facelift models.
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