Igqabi lisigqubuthelo (i-proting encinci, isiqwenga esijikeleziweyo esingaphezulu kwevili) kwizithuthi ezingezozithuthi kunye neemoto, njengoko igama lithetha, ligubungela iqokobhe langaphandle lezithuthi kunye nezingezo zemoto. Ngokuhambelana ne-fynamics ye-fluid, nciphisa ukungavisisani komoya, vumela imoto ikhwela ngakumbi.
I-leafboard nayo ibizwa ngokuba yi-fender (egama liyimilo kunye nesikhundla seli nxalenye yomzimba wemoto endala efana nephiko lentaka). Iipleyiti zamagqabi zifumaneka ngaphandle komzimba wesondo. Umsebenzi kukunciphisa ukumelana nomoya ngokuchasene ne-widd ye-fluid wid, ukuze imoto ibaleke kakuhle. Ngokwesikhundla sokufakelwa, oko kungahlulelwa kwiplate yegqabi eliphambi kwephepha kunye neplate yangasemva. Iplate yeGqana yangaphambili ifakwe ngaphezulu kwevili langaphambili. Kuba ivili elingaphambili linomsebenzi oqhubayo, kufuneka iqinisekise ukuba eyona ndawo iphezulu yomda xa ivili yangaphambili ijikeleza. Igqabi elingasemva likhululekile ukusuka kwi-filding yevini, kodwa ngenxa yezizathu ze-aerodynamic, igqabi elingasemva line-arc evuthiweyo ngaphandle.
Okwesibini, iBhodi yeMgqabi yangaphambili inokwenza inkqubo yokuqhuba yemoto, thintele ivili enyuka i-sand, udaka phunga ukuya ezantsi kwinqwelomoya, nciphisa umonakalo kwi-chassis kunye nokususwa. Ke ngoko, izixhobo ezisetyenzisiweyo ziyafuneka ukuba nemozulu yokunganyangeki kunye nokufikelelwa okuhle. I-thender yangaphambili yeemoto ezininzi zenziwe ngezinto zeplastiki ezinamaxesha athile okuphikisana, ukuze iqulethe i-sushinion ethile kwaye ikhuseleke ngakumbi.
