The disgraced ex-head of the NYPD sergeants union has been able to delay his potential prison term for wire fraud by more than two months to complete a pre-sentencing class — while collecting a six-figure city pension, The Post has learned.

Ed Mullins — who faces up to 20 years behind bars for stealing hundreds of thousands of dollars in union dues from the Sergeants Benevolent Association — was scheduled to be sentenced on May 25 in the federal case.

But Mullins, 61, managed to delay the potential prison term to complete a 12-week course run by the Focus Forward Project that helps criminal defendants prepare for life in lockup and re-entry into society, according to court documents.

The class meets once a week for two hours to discuss, among other topics, the 200-page memoir “A Long Way Gone” by Ishmael Beah, about his time as a child soldier during the Sierra Leone civil war.

“Participants also learn how to maintain self-confidence and motivation in the face of adversity and struggle, and how to apply all of the life skills they learn to their daily lives,” according to the nonprofit’s website. 

“By the end of the course, participants walk away with a completed working resume, interview skills, conflict resolution skills, public speaking skills and both long and short-term goals,” it states.

Thomas Kenniff, Mullins’ defense attorney, said in a statement that his client wanted to complete the course to show “his compliance at sentencing” and noted that both sides had asked separately for postponements.

Manhattan federal prosecutors asked for a delay of one week because an agent was on vacation after Mullins requested a sentencing date in the last week of July. Judge John Koeltl ultimately re-scheduled the sentencing for August 3, according to court documents.

But as he awaits his fate, Mullins has been cashing in on a $125,283 pension from the police pension fund, The Post confirmed. 

The former cop got his pension after retiring in November 2021 and will continue to collect despite the federal conviction, according to the NYC Police Pension Fund.

The FBI raided Mullins’ home and union offices in October 2021.

He turned himself in to the feds months later, in February 2022, and was later released on a $250,000 bond.

As part of a plea deal, Mullins in January copped to a single count of wire fraud and agreed not to appeal if the judge handed down a prison sentence of 41 months or less.

He also agreed to pay the SBA back the roughly $600,000 he admitted he embezzled by submitting “false and inflated” expense reports to the union between 2017 and 2021.

Federal prosecutors said he used the member dues to pay for hundreds of personal high-end meals as well as clothing, jewelry and home appliances — and even a relative’s college education.

“Despite the seriousness of his misconduct in this case, it does not erase all the good he has done in his career,” Kenniff said of Mullins’ pension that he had “earned through over four decades of honorable service with the NYPD.”

A police source claimed Mullins was able to walk away with a pension due to a well-known loophole in the force, in which some cops with more than 20 years on the job accused of crimes are allowed to retire.

“He was very lucky he had the years,” the source said of Mullins, adding that despite the continued pay, “he’s not going to have a happy life.”

“He’s gotta live with what he did. He’s going to be very upset and lonely.”