*ARP Head Studs 625+ R35 Skyline VR38 **NEW PRODUCT**

NEW PRODUCT!!ARP Nissan R35 Skyline VR38 CA625+ Head Stud KitAll Custom Age 625+ studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rated at 270,000 psi. These fasteners deliver a 55% increase in tensile strength over the OEM Torque To Yield (TTY) head bolts.Custom Age 625+ is a newly formulated super-alloy that demonstrates superior fatigue cycle life,