A1 / H-11 7-bolt DSM Headstuds

These A1 Technologies head studs are the absolute strongest studs available for the Mitsubishi 4G63. These are manufactured from H-11 tool steel with a tensile strength of 260,000 PSI.

These studs provide the absolute best claming load without distortion of the cylinder head and without the worry of stretching like commonly available head studs. These head studs along with the proper head gasket will hold all the boost you can throw at them!

We recommend these for anyone making or wanting to make big power.