You should always have bump stops on your car. I'd be surprised if the ST's didn't come with them, but if they don't you need to use the OEM bump stops.
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-Michael
Active Autowerke Stage II | MMW CSv2 Exhaust | MMW Catless Headers | BC Racing BR Extreme Low Coilovers | custom adjustable rear suspension links | 19" Hyperblack CSL's | M3 style front | trim wrapped in brushed steel vinyl | Slightly smoked tail lights with clear reverse lights | factory xenons
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