ARP Custom Age 625+ Head-Studs Platform:207-4207 - EVO X The 4 Piston Racing USAC

The 4 Piston Racing USAC D2 Midget Race Engine was specifically developed for D2 competition

yielding both torque and power gains well over many of the competitors

OEM Guides left in for porting

These studs are made exclusively for 4 Piston by ARP to be the absolute best for your racing engine

ARP Custom Age 625+ Head-Studs Platform:207-4207 - EVO X The 4 Piston Racing USACARP's Custom Age 625 Plus material is 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