Upon order we take the S&S 5-in-4 transmission cases and assemble them with your choice of Andrews, Jims or Zodiac gears and ship them with a bottle of Spectro transmission oil. First gear has 3.24:1, second gear 2.21:1, third gear 1.60:1, fourth gear 1.23:1 and fifth gear 1.00:1 ratio. The 5-in-4-speed case is designed for 4-speed Big Twin style frames with 1970 thru 1984 Shovelhead style drivelines and chain final drive. The transmission case is only compatible with chain final drive, not with the factory H-D primary belt drive as used on 1980 thru 1983 FXSB Sturgis models. Also does not fit Softail models.