The screwable cover is concave and designed with a crown on the outside

· Temperature stable

delivering a superior riding experience for those seeking high performance and optimal control

Thanks to his High -tech construction delivers it up to 30 % more starting power

Practical and easy to carry - Fits perfectly in the bag or depot stand

S&S CYCLE CYL.HD. 66-78BT NAT 90-1496 kymco-heroism-150-150-1998-esi1630955 The screwable cover is concaveHeads come completely assembled with valve seats, valves, guides, seals, . 590" lift valve springs, collars and valve keepers, Kit also includes rocker cover gaskets, head gaskets, exhaust flange gaskets and hardware for rocker housings, top engine mount and carb support bracket with instructions, Features stock appearance, but flow better than stock heads, Use OEM manifolds and exhaust, Made in the USA