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      09-15-2019, 12:45 AM   #73
1azycat
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Drives: 2017 F80 M3 CP
Join Date: Apr 2009
Location: sg

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https://www.alpina-automobiles.com/e...echnical-data/

Looks like S58 with more torque than in the X3m competition. Same compression ratio as the S58. Same bore and stroke as S58 too. 84x90mm vs 82x94.6mm of the b58.
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