ARP is well know for their bolts, its considered a staple if you intend on bulletproofing your motor. The majority of race teams use their product due to their level of effectiveness beyond the factory limits. They have released their main stud kit for Mitsubishi’s Evolution X.

“Part No. 207-5403 – includes a set of ten, M10 ARP2000 main studs, a set of ten, M8 ARP2000 main studs, twenty 8740 chromemoly steel 12 pt nuts and a 1/2 oz. pack of ARP Ultra-Torque fastener assembly lubricant.

All Pro Series ARP2000 studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rated at 220,000 psi. These fasteners deliver a 50% increase in tensile strength over the OEM main bolts.”

[source: titan motorsports]