Two assemblies in derailleur

The utility model discloses a two assemblies in derailleur, including two, two off-axials incline to overlap in proper order from a left side to the right side and are equipped with fourth speed gear, three fender gears, two fender gears, the fender gear and the gear that reverses gear, the left side of fourth speed gear, three keep off gears and two keep off between the gears and one keep off the gear and reverse gear and all be equipped with the sliding sleeve between the gear, fourth speed gear, three keep off gears, two keep off gears, one keep off the gear and reverse gear in the gear respectively the cover and be equipped with the adjustment of fourth speed gear and fill up, three keep off the gears adjustment and fill up, two keep off the gears adjustment and fill up, one keep off the gear adjustment and fill up and reverse gear the gear adjustment and fill up, wherein, three keep off gear, two fender gears, a fender gear and two diameters that the gear corresponded that reverse gear is greater than two diameters that fourth speed gear corresponds, and three keep off gear, two fender gears, a fender gear and the two epaxial symmetries that the gear corresponded of reversing gear is equipped with two hex keys. The utility model discloses can improve two intensity, prevent that the derailleur from falling to keep off to convenient assembling.