The court heard that Safi first encountered the teenager while she was Christmas shopping and groomed her over Snapchat before arranging a taxi to bring her to Bristol. The offences took place at a house in the St Werburghs area of the city last year. Sentencing on Tuesday, Judge Michael Cullum said the attack would have caused "unimaginable" trauma to the victim.
In a victim impact statement read to the court, the girl said she had been left "traumatised" and was now fearful of leaving the house. The defendants were found guilty on 26 June of multiple sexual offences.
All three men who fled were stopped by French police as they attempted to leave the UK concealed in a lorry. The 17-year-old co-defendant, who was also convicted of rape, remained in the country.
The case highlights the use of social media platforms for grooming, with Snapchat identified as the means by which Safi first contacted and manipulated the victim.