Fire Ring Service – One or Both Sides

Service charge to cut radius bottom fire ring grooves into your cylinder head, engine block, or a half groove on both surfaces.

We recommend the full groove in either the block or the head-on applications up to 1,500 hp. For engine builds shooting for more than 1,500 hp, we strongly recommend that the head and the block both receive half grooves and 14-mm head stud hardware.