I-bumper inokuvikela ukuphepha, ukuhlobisa futhi ithuthukisa izici ze-aerodynamic zemoto nezinye izinjongo, ngokombono wokuphepha, imoto ingadlala indima ye-buffer ezingozini zokushayisana ngesivinini esiphansi, ivikele umzimba wemoto yangaphambili neyangemuva, futhi engozini yabahamba ngezinyawo nayo ingadlala indima ethile ekuvikeleni kwabahamba ngezinyawo.
Susa i-bumper bese uthola ukuthi uhlangothi lwesobunxele lwe-bumper lushaywe umsele, okungukuthi, indawo lapho i-bumper yaphuka khona idinga ukushintshwa nge-bumper entsha ye-bumper bumper bumper bumper bumper bumper bumper bumper bumper bumper bumper bumper bumper bumper, uma kwenzeka ingozi ukunciphisa umonakalo we-trunk, umnyango wangemuva, isethi yokukhanya komsila kanye nezinye izingxenye zomucu we-chrome ngaphansi kwe-bumper inomonakalo. Ngemva kokususwa ukuze kufakwe okunye, isibhamu se-plastic welding sisetshenziselwa ukushisa nokushisela imifantu ngemuva, kanti induku ye-plastic welding iyashiswa ngenkathi ihamba ngemifantu. I-sander kagesi isetshenziselwa ukupholisha i-solder joint ephakeme futhi ibushelelezi ubuso bopende obonakele ngesondo lokugaya likagesi. Ngemuva kwesikhathi sokuqala, i-putty yomiswa ngokuphelele emoyeni, bese kusetshenziswa isihlabathi sobukhulu obuhlukene ukupholisha nokusomisa, bese kufakwa umucu we-chrome plating ku-bumper.
