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This head comes as pictured, stock assembly with the stock stainless 24/28.5 valves, steel retainers/locks, 22 pound springs, and extra heavy heat treated stamped (1.2 ratio) rocker arms.
The chamber size is 18cc and the exhaust bolt pattern is just slightly wider than a standard clone/predator head but you can still use a standard pipe if you oblong the bolt holes.