Tall billet aluminum intake manifold for Zenoah and Chung Yang RC engines from 22.5 to 30.5cc. 3-axis machined for a perfect match to the cylinder and the carb. The stock manifold does not match the cylinder and is smaller than the carb, restricting flow. This kit includes laser cut PTFE heat spacers that also double as gaskets. This manifold is 1/4" thicker that our other billet RC intake manifold. Clear anodized.