I-621F kanye ne-721F zinezindlela ezine zamandla ezingahlelwa ezivumela abasebenzisi ukuthi bafanise umkhiqizo womshini namandla enjini atholakalayo. Ama-loaders afaka ama-axle asindayo ane-auto-locking front kanye ne-open reverse differentials ukuze kubambeke kahle ezimweni ezahlukene. I-axle yakhelwe ukusiza ukunciphisa ukuguguleka kwamathayi, ikakhulukazi ezindaweni eziqinile, ngokusho kwe-OEM. I-621F kanye ne-721F zinikeza i-Efficiency Package yokuzikhethela efaka i-gearbox yesivinini esinhlanu ene-lock-up torque converter yesivinini sokuhamba emgwaqweni esisheshayo, ukusheshisa kanye nezikhathi zomjikelezo ezimfushane, kanye nama-axle ane-auto locking differential kanye ne-advanced system programming. I-gearbox yesivinini esinhlanu yokuzikhethela ifaka isici se-Case Powerinch esivumela opharetha ukuthi basondele ezinhlosweni ngokushesha nangokunembile kungakhathaliseki isivinini senjini. I-Case ithi lesi sici siqinisekisa ukuthi akukho ukubuyela emuva ngisho nasezintabeni ezinde, okwenza kube lula futhi kusheshe ukulahla elolini.