BBC with background by Skylar Curtis
The men, from Rochdale and Oldham, "groomed" girls, one as young as 13.
Liverpool Crown Court heard the men plied their victims with drink and drugs so they could "pass them around" and use them for sex.
The case, involving Asian defendants and white victims, sparked protests by far-right groups but police insist the grooming was not "racially motivated".
The offences which centred on Heywood included rape, trafficking girls for sex and conspiracy to engage in sexual activity with a child.
A failed police investigation in 2008 allowed the abuse to go undetected for another two years.
Mohammed Shafiq, chief executive of of the Ramadhan Foundation, accused Pakistani community elders of "burying their heads in the sand" on the issue of on-street grooming.
"There is a significant problem for the British Pakistani community," he said.
"There should be no silence in addressing the issue of race as this is central to the actions of these criminals.
"They think that white teenage girls are worthless and can be abused without a second thought; it is this sort of behaviour that is bringing shame on our community."