Chrome. Billet aluminum. Rocker covers can be used with all S&S Evo type; stock H-D Evo B.T. and 86-03 XL engines. S&S rocker cover kits come complete with gasket set and OEM style umbrella valves to accomodate most aftermarket & stock Evo engines; both bottom (84-92) as head vent (93-99) models. Note: Billet rocker covers are approximately 1/2″ (12mm) lower than die-cast rocker covers. All earlier S&S 79″ and 100″ S&S Retro-Fit Evo engines; made to fit Shovelhead frames; are equipped with billet covers for this reason.

