MSA VK56 625+ CUSTOM ARP HEAD STUDS

This is what we run in Sally our 2200+ VK56 powered Drag car and they hold the heads down without issue at over 50PSI Boost.

ARP Custom Age 625+ head studs are the absolute premier choice for high-performance and heavy-duty competition engines. Engineered from a proprietary super-alloy, they deliver a massive 260,000--280,000 psi tensile strength. They securely prevent cylinder heads from lifting and blowing head gaskets under massive boost and cylinder pressures.

• Extreme Tensile Strength: Consistently rated at 260,000--280,000 psi, providing about a 55% increase in clamping load over standard OEM torque-to-yield bolts. 

• No Corrosion Issues: Unlike L19 studs, which are prone to oxidation and corrosion if touched with bare hands, CA625+ is completely resistant to atmospheric corrosion and oxidation. 

• Advanced Metallurgy: Heat-treated prior to thread rolling to ensure excellent fatigue cycle life and exceptional overall toughness.