Looking for an upgrade for your 6.4 Powerstroke 2008-2010? Check out the AFE 48-33016 Twisted Steel Up Pipes! These pipes are constructed of durable 304 stainless steel tubing with a thickness of .120" wall. The 2" inner flex pipes have an internal liner for added strength and durability. The flanges are 3/8" thick to provide a complete 360 degree sealing surface. Don't settle for less, get the AFE 48-33016 Twisted Steel Up Pipes and rest assured knowing you're getting the best.