I-knuckle yokuqhuba, ekwabizwa ngokuba "luphondo lwegusha", yenye yezona ndawo zibalulekileyo ze-axle yokuqhuba imoto, enokwenza ukuba inqwelo-mafutha iqhube kakuhle kwaye idlulisele icala lokuqhuba ngovakalelo. Umsebenzi we-knuckle yokulawula ukuhambisa kunye nokuthwala umthwalo wangaphambili wemoto, ukuxhasa kunye nokuqhuba ivili langaphambili ukujikeleza i-kingpin ukuguqula imoto. Xa isithuthi sisebenza, sithwala umthwalo oguqukayo wempembelelo, ngoko ke kufuneka ube namandla aphezulu.
I-knuckle yokulawula idityaniswe nomzimba wesithuthi ngokusebenzisa i-bushings ezintathu kunye neebholiti ezimbini, kwaye idibaniswe nenkqubo ye-brake ngokusebenzisa i-brake mounting hole ye-flange. Xa isithuthi siqhuba ngesantya esiphezulu, i-vibration edluliselwe ukusuka kwindlela yendlela ukuya kwi-knuckle yokulawula ngesondo iyona nto iphambili esiyiqwalasela kuhlalutyo lwethu. Ekubaleni, imodeli ekhoyo yesithuthi isetyenziselwa ukusebenzisa i-4G yokunyuka kwe-gravity kwisithuthi, ukubala i-reaction force yenkxaso yeendawo ezintathu ze-bushing center ye-knuckle yokuqhuba kunye namanqaku aphakathi kwemingxuma emibini yokufaka i-bolt njengomthwalo osetyenzisiweyo, kwaye ukunqanda i-123456 degrees yenkululeko yazo zonke iindawo kwisiphelo sobuso beflange edibanisa inkqubo yokuqhobosha.