Engine 500S B Engine codes EX500A Production years 1993/01 - n/a kW 37 hp 50 ccm 500. Engine 500S B Engine codes EX500A Production years 1991/01 - n/a kW 20 hp 27 ccm 500. Engine 500S E Engine codes EX500DE Production years 2002/01 - n/a kW 44 hp 60 ccm 500.
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