what year did harley sportsters first come with belt drive?
For 1986 the Harley-Davidson Sportster received Harleyâs new Evolution engine in both 883cc and 1100cc sizes, with the 1100 being bumped to 1200cc in â88. In 1991 the four-speed transmission gave way to a five-speed gearbox, and by â92 all Harley-Davidson Sportsters were using a belt final-drive instead of chain.