That looks great emarks, the frame looks very similar to the Ridge Runner frame, right down to the paint scheme. What does the tubing decal say?
I'm pretty sure the Ridge Runner got renamed Mean Streak in 1983 or 84.. The 1984 DB catalog shows three 26" cruiser/ATB type bikes, all branded with Streak in their name... "Sand Streak", "Mean Streak" and "Trail Streak".. the Mean Streak is the best equipped bike, with Champion #5 frame, though the specs suggest the stays are not cromo. The 1984 paint job is silver with a black head tube (opposite of the ridge runner)
I'm not sure what the names were in 1985, but the Apex and Ascent marques were being used in 1986. By 1987 all of the original "Streak" names had been dropped, though the "Fleet Streak" does appear as a low end model in catalogs until at least 1989