I-fender, ekwabizwa ngokuba yi-fender, yipleyiti yomzimba engaphandle egubungela amavili. Ngokwendawo yokufakela, yahlulwe yaba ziipleyiti zamagqabi angaphambili kunye neepleyiti zamagqabi angasemva. Indima yayo kukusebenzisa i-fluid mechanics ukunciphisa i-coefficient yokumelana nomoya nokwenza imoto isebenze kakuhle.
Ibekwe ngaphezulu kwamavili esithuthi njengepleyiti engaphandle yecala elisecaleni lesithuthi kwaye yenziwe yi-resin, kwaye i-fender yenziwe yinxalenye yepleyiti engaphandle kwaye inxalenye yokuqinisa yenziwe yi-resin.
Inxalenye yepleyiti engaphandle ivezwe ecaleni kwesithuthi, kwaye inxalenye yokuqinisa inwebeka ecaleni kwenxalenye yomphetho wenxalenye yepleyiti engaphandle ehlelwe ngaphakathi kwenxalenye ekufutshane yenxalenye ekufutshane yenxalenye yepleyiti engaphandle. Kwangaxeshanye, phakathi kwenxalenye yomphetho wenxalenye yepleyiti engaphandle kunye nenxalenye yokuqinisa, kwenziwa inxalenye ehambelanayo yokulinganisa inxalenye ekufutshane.