If you are looking for a quality forged piston to suit your BA BF FG turbo ( barra ) then this is the piston for you. This Mahle power pack piston is made from 2618 alloy and is suitable for boost levels above 25 psi. I have seen guys running 1000 hp with no problems. This piston is known for low noise or engine rattle. The piston is std compression ratio. Each kit comes with 6 x pistons, 6 x pins, 12 x c clips with a full set of piston rings included. The pistons are available in three sizes, STD , .003 th and .020 th. select size when ordering. 000126214