THIS BRAND NEW AFTERMARKET KIT HAS BEEN PERFECTED & HAS THE SAME HEAT RESISTANT BLACK COATING AS OEM. OTHER SELLERS DO NOT USE THIS & SELL A ” GENERIC FIT “. WE USE A CERAMIC COATED PISTON WHICH IS FAR SUPERIOR THAN OTHER PISTONS – IT’S HEAT RESISTANT WHICH MEANS MORE POWER & DURABILITY. OUR KIT HAS BEEN INSPECTED FOR THE HIGHEST QUALITY & THE HIGHEST GRADE MATERIALS WHICH HAVE BEEN USED IN THE MANUFACTURE OF THIS KIT. NO OTHER KIT CAN COMPETE AGAINST THE RELIABILITY & QUALITY OF OURS. USE OUR KIT WITH THE CORRECT STYLE. CHAIN TENSIONERS CAUSE MORE. DAMAGE TO YOUR CHAIN AND CAN CAUSE. COMPLETE CYLINDER HEAD ASSEMBLY. (HEAD INCLUDES: EXHAUST & INLET VALVES, VALVE SPRINGS, CAMSHAFT, ROCKER ARMS, VALVE RETAINERS). REBUILD GASKET AND O-RING KIT.