3.8 Genesis Coupe 2010-2012 Drivetrain 3.91 Final Drive $550.00 4.18 Final Drive $540.00 Sale! Genesis Coupe Differential Bolt Upgrade Kit $35.00 $30.00 Coolerworx Short Throw Shifter (Hyundai Genesis) $550.00 ATQ STS Shifter $235.00 Home