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    Pair Valve GTS Exhaust with QP S 4,7

    Hi Guys, Managed to find myself a pair of used QP Sport GT S mufflers for upgrading my QP V 4,7S. Now here is the big question. Since my QP S 4,7 didnt have the valved mufflers its a bit tricky to make them work as it was delivered from Maserati... So my question is how can the valve mufflers...
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    M139 QP - Sport GT S Exhaust 4,7L

    Hi Guys, I am looking for a QP M139 Sport GT S Exhaust (Muffler with Valve) - looking to upgrade mine on my 4,7S 2011 QP. Thanks Fred