WSRD Evo 8/9 & 7-bolt DSM Head Stud Large Washer
This 22% increased surface area will help prevent crushing your washer pockets. This can be used in junction with TMZ shouldered inserts. These are designed for the 11mm 7 bolt/ Evo stud size. We recommend 95-100 ft/tq with CA625+ or other exotic materials on the head studs.