Genuine upgrade  MJX Hyper Go H16H H16E H16P 16207 16208 16209 16210 14301 14302 14209 14210 MEW4 M162 M163 solid steel reduction gear assembly. Sick of chewing through reduction and rear bevel gears on 3S? Then, these more durable steel items will definitely help.  PLEASE check part numbers before ordering. Also, rear mesh and diff ring gear need to be in good order. Otherwise, even these steel gears will wear prematurely. Seller so fast delivery. May be sent as an assembly. Condition is Brand New. Dispatched with Royal Mail 2nd Class.