Pierre Rewi Anglem (42) was found guilty of eight charges by a jury in April, all relating to August 27, 2020.
However, the Dunedin District court heard yesterday he did not accept the verdict and was not remorseful for his crime which left the victim "significantly" impacted.
The victim was told by a female friend that a mutual acquaintance was coming around with his "cuz".
"She did not know you at all, nor was she expecting visitors that night," Judge Michael Turner said.
The victim described him to the jury as a "scary mobster".
She was scared of him from the start, Crown prosecutor Richard Smith noted.
Counsel Anne Stevens QC said there was no sophistication or planning to the offending, as the two men had "simply gone to visit".
The three smoked methamphetamine together until the acquaintance left unexpectedly on a "mission".
"Almost immediately after [the acquaintance] left the address, you produced what was described as a fold-out hammer and . . . passed it from hand to hand." the court heard.
"You said nothing".
He put it away after she made a comment about it looking dangerous, but then said she had to give him something of a sexual nature.
"She was a much smaller female against a much larger male who was armed," Mr Smith said.
Terrified she would be hurt if she did not comply, the woman performed oral sex on him.
The judge said "she hoped in doing so, you would then leave the address".
"She struggled to breathe and told you that repeatedly. Your response was to grab her by the hair".
Anglem subsequently picked her up and walked her towards the bedroom, but she put her hands on the door frame to stop from going in.
It was there the first rape happened.
Physically overpowered and "frozen", the victim was forced into the bedroom and endured what she described to the jury as two hours of "half-torture, half-rape".
She was slapped and spat on, had chunks of her hair pulled out, and was left with a loose incisor.
"You’re going to get pregnant to me, they all get pregnant to me," Anglem told her during the attack.
He only stopped when the acquaintance returned and disturbed them.
On November 25, while on remand at Christchurch Men’s Prison, Anglem wrote a note for his aunt during a visit.
Unaware there was DNA evidence linking him to the scene, the note instructed a cousin to create a false alibi and say he was with her that night. The note was confiscated.
Mrs Stevens said Anglem’s childhood was "ghastly" and he was subject to, and witness of, significant abuse.
Judge Turner acknowledged Anglem’s upbringing, but said while it explained "why your moral compass is so far off course", it did not excuse him completely.
"You treated this victim as an object, not caring about what she thought or wanted," he said.
The judge noted Anglem’s desire to stay in the gang and the denial of his offending lowered his rehabilitative prospects.