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12x Exhaust valves
85mm Exhaust Turbo Conversion
They are a popular choice for a range of motorsport disciplines such as road racing
providing exceptional durability and performance
ARP Head Stud Kit, BMW S55 S50 US 12x Exhaust valvesUpgrade the performance of your BMW S55 engine with our custom designed Head Stud Kit, brought to you by ARP the world leader in fastener technology. This kit is engineered to replace BMW part #11127853937 and is compatible with the BMW S55B30 engine found in F80 M3 F82 M4 and F82 M2 Competition models. This kit comes with 14x 11mm Studs, 14x Washers, and 14x Nuts offering increased clamping force and enhanced head gasket sealing, which can prevent
