Qalabka bamka dabka ee la qaadi karo ee BORRA waxaa ku qalabaysan matoor 4-stroke ah oo hawo qaboojiye sare leh (matoorka shidaalka ama naaftada) iyo bamka dhexe, oo leh miisaan fudud, qaab-dhismeed is haysta, bilow fudud, biyo degdeg ah, isticmaalka shidaalka oo hooseeya, cadaadis sare, socod weyn, kor u qaadis sare, astaamo deggan oo lagu kalsoonaan karo.