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Two of their terrified victims were kidnapped off the street and driven to a secluded dirt track at Altar Lane, Bingley, where they were used as sex objects by the duo and then cruelly beaten and robbed.
A third prostitute went freely with Ejaz Ahmed, 19, of Ashfield Avenue, Frizinghall, Bradford and Mohammed Liaqat, 20, from Bilton Place, off City Road, Bradford, to a secluded spot near a local golf course, but even after she had consented to sex acts she too was attacked and robbed.
Bradford Crown Court was told that they might even have filmed one of the attacks on a mobile phone.
Ahmed, who was only 18 at the time of the attacks in June, and his accomplice Liaqat, who was then aged 19, were described by Judge Jonathan Durham Hall QC as evil, sadistic and wicked.
The judge said: "The purpose of your offending as far as we have any insight was sexual gratification, amusement and above all the utterly sadistic and violent degradation of those vulnerable women."
Judge Durham Hall said the women had been treated as "objects'' and with total contempt.
He told the pair: "Only those of us who sat through that trial and saw and felt what happened on the two nights in question can possibly assess the extreme gravity of these offences.
"For it is in my judgement, despite many decades of experience, one of those cases where it is impossible to overstate the gravity of your offending.
"It is impossible to overstate the terrific and horrific effect of your offending on the lives of the three vulnerable women whom you so cruelly abused."
Ahmed and Liaqat will both have to register as sex offenders with the police for the rest of their lives following their release from custody.