IE Lowering Springs for Audi B9 & B9.5 A4 & S4 4M-RSQ8 5L cylinder head to the

5L cylinder head to the limits with Supertech Performance engine valves

resulting in a massive 28

7T engine the stock crank pulley quickly loses its ability to keep harmful engine vibrations to a minimum

The affordable intake that doesn't skimp on quality or performance

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IE Lowering Springs for Audi B9 & B9.5 A4 & S4 4M-RSQ8 5L cylinder head to theThe perfect stance meets serious engineering. iE B9 lowering springs for Audi B9 A4 & S4 reduce body roll, dial out understeer, and deliver the exact drop your Audi has been waiting for. Tuned specifically for the Audi B9 and B9. 5 chassis across A4 and S4