Gear set, 2-speed standard ratio (2nd speed gear 39T, 13T-17T input gears, hardware)

Standard-ratio transmission gear set includes 39-tooth 1st speed gear with 13-tooth input gear and 17-tooth input gear. The standard ratio set reduces the engine’s RPM change between first and second gear for nearly seamless shifting and speed, even in the corners! Wide-ratio gearing already comes stock on trucks.