ARP Head Studs - 4G63 (7-Bolt DSM & Evo 4-9)
Fits these Applications:
(7-Bolt 4G63) 1996-2006 Mitsubishi Evolution IV V VI VII VIII IX
(7-Bolt 4G63) 1992-1999 DSM (Eclipse GST/GSX, Talon TSi & Laser)
ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort.
(1) Assembly Lube