Original Randy Smith designTop covers onlyFeatures a guaranteed fit and are compatible with the very latest breather system (early breathers too)Include adequate clearance for all factory framesDomestic aircraft-grade billet aluminum alloy, fully machined and polishedAre not subject to the warpage and oil seepage that die-cast imported copies areThe undersides of the covers have been machined for additional clearance which will accommodate virtually any high-lift camPolished stainless button-head Allen screws and washers are also includedMade in the USA