The line up did not change for Harley in 1927. The same four J and JD models for the street but several new ones on the specialty side. They included the Harley JK Special Sport and the Harley JDL both with generator ignition. in 1927 Harley sold 3,561 J models for $310, and 9,691 JD motorcycles for $320. Harley introduced the “wasted spark” ignition this year with the distributorless ignition using a circuit breaker and single coil to fire both spark plugs at the same time.