- High-quality steel construction
- 14-tooth design
Harley-Davidson -- Duo Glide FL -- (1961, 1962, 1959, 1963, 1964, 1960); Harley-Davidson -- Duo Glide FLH -- (1962, 1960, 1964, 1961, 1959, 1963); Harley-Davidson -- Electra Glide FL -- (1966, 1965); Harley-Davidson -- 1200 Electra Glide FLH -- (1966, 1965)