Audi RS3/TT-RS (DAZA/DWNA) ARP CA625+ Head Stud Kit

The CA625+® Head studs for Audi RS3/TT-RS are suitable for DAZA & DWNA engines and have a bottoming nose to allow all of the thread in the block to be utilized.

This kit is recommended for High HP-Setup and is at least 20% stronger, providing a greater clamping force than ARP 2000 studs! The dimensions of the CA625+ studs are M10 and are superior to other M11 or M12 due to the high tensile strength material.

This super-alloy demonstrates superior fatigue 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+. The typical tensile strength of the CA625+ stud is  260,000-280,000 psi.