BlackBoost by ARP

Mercedes AMG M157 Head Studs Kit - Custom Age 625 Plus®

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  • Regular price $1,499.00

BlackBoost Custom Age 625 Plus® Head Studs Kit for the MB AMG M157 5.5l V8 BiTurbo platform in cooperation with ARP.

Custom Age 625 Plus®: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi.