ZENOAH 4 BOLT CONVERSION TO 29cc SUITS ZENOAH ONLY SHORT STROKEThis is the long-anticipated 4-Bolt Zenoah 36mm 29cc bigbore kit! This kit will fit on the Zenoah G240 270 290RC engines. This includes the parts shown (piston, cylinder, ring, spark plug, pin bearing, pin washers, piston pin, base gasket, c-clips). This 36mm cylinder is for use with the standard 28mm crankshaft. The modified 36mm kits are parts CC280-CC289.