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Old 11-20-2009, 09:35 AM   #49
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Member#: 85813
Join Date: Apr 2005
Chapter/Region: South East
Location: Myrtle Beach, SC
2002 E46 M3
2006 RC51


The 2.5 bore is 99.5mm where the 2.0 bore is 92.? mm. So yes the 'circle' on the 2.0 heads is smaller.
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