Waɗannan na'urorin birgima sun dace da babbar motar jifa ta MST300. Suna taka muhimmiyar rawa a cikin chassis kuma suna da alaƙa kai tsaye da aikin tafiya na chassis.
Suna da inganci mai kyau kuma masu ɗorewa, an ƙera su da kyau, suna mai da hankali ga cikakkun bayanai, kuma suna iya jure wa gwajin amfani mai tsanani a cikin mawuyacin yanayi na aiki, wanda zai iya inganta aiki da rayuwar sabis na kayan aiki.
Yijiang yana bayar da nau'ikan na'urori masu juyawa da kuma hanyoyin roba daban-daban don motar rarrafe da ke ƙarƙashin motar juji ta Morooka, lambar samfurin MST300 MST600 MST800 MST1500 MST2200, da sauransu.