When pushing the limits of the Toyota 2JZ-GTE engine beyond the 1000+ horsepower mark, only the best will suffice. Straight Six Imports proudly offers the ARP Custom Age 625+ Pro Series Head Stud Kit, the ultimate head-sealing solution for your Toyota Supra (MKIV) 2JZ-GTE engine.

The Custom Age 625+ material is ARP's proprietary super-alloy, boasting a nominal tensile strength of 260,000 psi—significantly higher than the standard ARP2000 material. This extreme strength is essential for handling astronomical cylinder pressures generated by large turbochargers and high-boost levels. This kit guarantees the highest achievable clamping force, eliminating any possibility of cylinder head lift and subsequent head gasket failure.

Key Features of the ARP Custom Age 625+ Studs:

• Ultimate Tensile Strength: Forged from Custom Age 625+ Super-Alloy (260,000 psi nominal) for use in 1000+ HP builds.

• Non-Negotiable Upgrade: Mandatory for extreme boost, nitrous, and methanol applications where cylinder pressures exceed the limits of other fasteners.

• Consistent Clamping: Provides the most reliable and even distribution of clamping force to ensure a perfect, durable head gasket seal.

• Superior Material: Highly resistant to fatigue, heat, and corrosion, ensuring extreme reliability in racing environments.

• Complete Kit: Includes fourteen 625+ head studs, fourteen parallel-ground washers, and fourteen 8740 chromoly steel 12-point nuts, along with ARP Ultra-Torque Fastener Assembly Lubricant.

If your goal is maximum horsepower and absolute reliability from your 2JZ-GTE, the ARP Custom Age 625+ Head Stud Kit is the final word in engine fastening technology. Shop this elite upgrade at Straight Six Imports.