This BZ1 Engine Modification includes the Zenoah G300PUM. – includes Walbro WT-1048 carburetor. Adds an approximate 3-5MPH increase over the stock Zenoah G260PUM. Includes: Advanced exhaust timing, flow port exhaust, flow port intake, piston clearance mod & 2 oil groves cut into piston. Contact us with any questions.
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