Custom 36mm big-bore head kit from legendary 2-stroke tuner Trevor Simpson. Kit includes:
Machined 36mm cylinder (28.5cc when used with stock 28mm crankshaft), billet head with engraved signature and cooling fins, 13:1 compression dome, piston, piston ring, piston pin, pin bearing, pin washers, circlips, cylinder gasket, carb gasket, mounting hardware, and instructions. Increases the power and speed of your engine SUBSTANTIALLY! Requires 91 octane (using the R+M/2 octane rating method) or higher fuel. Fits Zenoah G23LH / G230RC / G260RC engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines.
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