Chung Yang CY29RC headkit engine (35mm bore, 30mm stroke - 28.9cc) with Walbro WT-668 carburetor. The 2006 model features a red spark plug cap, a rubber kill switch cover, improved cylinder plating, and a high-polish finish on the billet head! Includes 54mm inner clutch assembly pre-installed. Includes choice of spiral billet head shell with 14:1 compression dome. Ready to bolt-on. 3.75 horsepower. Similar design to the Zenoah G230RC/G260RC - 4 transfer port hp cylinder, single ring piston[ame=
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