The top of the line, and possibly the most technologically advanced minibike head in the world. The Takegawa 4 valve Desmo double overhead camshaft Superhead is the first pit bike head in the world to offer desmodromic valve operation. Described simply, the Desmo system uses the rocker arms to open and close the valves precisely, completely removing sloppy valve springs that tend to float at high rpm causing rapid power loss and premature engine wear. Short of pneumatic valve operation, you will not find a cylinder head that can reach full power sooner in the rpm range and keep it there longer. Takegawa Desmo 4V Superhead kits are the absolute top level in performance and design, available in 100cc, 106cc, 124cc, and 138cc displacements.