Lo mshini wokumpompa uwoyela oqhutshwa nge-sprocket wenziwe ngengxube ye-aluminium enamandla amakhulu, futhi unesprocket yensimbi yokushayela kanye nesihlungi sokumunca uwoyela. I-sprocket iqinisekisa ukudluliswa kwamandla okuzinzile, kuyilapho isihlungi sihlunga ukungcola emafutheni enjini ngempumelelo. Inikeza umfutho kawoyela ozinzile ukuze ugcwalise izingxenye zenjini, inokumelana nokuguga okuphezulu nokuthembeka kwesikhathi eside. Ikhiqizwe ngokuqinile ngokwezindinganiso ze-OEM, iyingxenye yokushintsha yochwepheshe yokulungisa injini eqhutshwa ngeketango.