Join Date: Dec 2013
Vehicle: SLK 350 R171 2004
Other Toys: Mercedes W204 C280 Elegance
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The wheel hub is the same on 280-350 sport/standard so 300 or 330mm disc will screw in the hub ( one small screw).
You might try just buying the bigger disk or:
You will need calipers and pads for sport package.
Depending on the size of the caliper you might need new wheels ( i really don't think so ).
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