lil_billy_300ex
04-08-2005, 08:15 AM
hey, im looking into a 416 kit with a 11:1 compression piston for my 2005 400ex. i was looking in a nacs mag and it has a 85mm....std , 86...mm...1.00 87mm....2.00 and 88mm...3.00. what does this mean. i no a 416 piston is .080 over. please help