Thread: ST Coilovers - Review?
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      06-20-2013, 04:54 PM   #15
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Drives: 2007 335i
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Originally Posted by Gavin@MMW
The STv1 is a good coilover for the entry level, not to be confused with the Sonik Tuning system, which is a totally different system.
What is the difference between ST & Sonic in durability and quality?
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