"NEW DESIGN of TAIL DRIVE PULLEY" Raptor E700

If PV1657 tail drive pulley with distortion problem or too soft. The tail drive pulley will be shake during it work with PV1653 tail drive gear and make gear broken.
The new PV1657 Tail drive pulley has modification the mold with ribs. The ribs can make gear more stiffen and solve the shake problem.