RevTech 4-Speed 2.60:1 Close-Ratio Set For Harley Big Twin 70-E77 loose rollers 1955-1978 2 Require re drill the

2 Require re drill the holes for install backrest (no pre)

GL5 multi-viscosity gear oil that was specially formulated to provide improved fluid flow to bearings

17inches(36cm)

fit all Big Twin and Sportster models from 73-81

RevTech 4-Speed 2.60:1 Close-Ratio Set For Harley Big Twin 70-E77 loose rollers 1955-1978 2 Require re drill theFitment: Matched close ratio transmission gear sets for Harley Big Twin models from 1970 E77. (loose rollers) Note: Late 80 early 84 models require Original Equipment countershaft (OEM 35614 80) More Information: RevTech 4 Speed 2. 60: 1 Close Ratio Set All of the gears are made from 8620H highstrength chromemoly steel, with gears finish ground for maximum strength and precise engagement. Each set is complete with the proper gears, shifter