 By 1979 the company reached an annual production of 40,000 motorbikes, with eight models powered by two-stroke engines ranging from 125 cc to 350 cc.Many of the Harley-Davidson models were continued in production as Cagivas, and the off-road motorcycle division was improved and expanded, eventually producing its own race-winning WMX series of moto-cross motorcycles.In 1983 Cagiva also sourced Ducati four stroke v-twin engines from 350 cc to 1000 cc and entered the big displacement market.