The 340 Forged Piston Is So Heavy....

changing pins, doesn't remove enough weight. also, light pins with heavy pistons leads to broken pins. they will flex, and cause piston to give and ring seal problems. eventually then break. the head of the piston is very thick. you can mill out .250 easily. will not affect piston strength. leaves plenty of meat in top of piston. then can use a lighter pin to help weight loss. BTW, we've removed .350 from the underside.