5-Speed Big Twin Transmission Gear Sets - 4Th Gear Mainshaft

4Th Gear Mainshaft

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Stock

4th Main
In addition to close ratio first gears, Andrews also makes stock replacement gears for first, second, third, fourth and fifth gears. Made from high nickel alloy that's heat-treated and shot-peened to give maximum durability and strength. Also, where applicable, lead-in ramps have been machined into most gears to improve shifting and reduce wear on drive dogs and drive slots.. . 2.94 Close Ratio 1st Gear Set: 2.94 first gears-close ratio shifting; first to second; At peak RPM, 2.94 gears will run +5 mph over 3.24 ratio.