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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Shock Factor Shifter Bushings: 95A durometer polyurethane
Verify Compatibility: Confirm fitment for your specific year and hood type
Supported fitments include only those vehicles running OEM STI and GrimmSpeed Top Mount Intercoolers
TIG-welded in a precision jig
IAG Performance / ARP 14mm Head Stud Set Most Subaru Models YMM_2016_WRX Shock Factor Shifter Bushings: 95AThe IAG ARP 14mm Head Stud Set is engineered specifically for high horsepower Subaru EJ engines where extreme cylinder pressures demand maximum clamping force. By increasing the stud diameter to 14mm, this system significantly improves load capacity, helping prevent cylinder head lift and the head gasket failures commonly associated with high boost applications. Compared to standard size head studs, the oversized 14mm design delivers superior strength
