DETROIT — The Lions agreed to massive extensions with two of their top offensive stars Wednesday.

Wide receiver Amon-Ra St. Brown agreed to a four-year, $120 million extension, a source confirmed to ESPN, and offensive tackle Penei Sewell is signing a four-year, $112 million deal, a source told ESPN’s Adam Schefter.

St. Brown’s contract includes $77 million guaranteed, the source said. That’s the most guaranteed money for a wide receiver in a single contract in NFL history, according to ESPN Stats & Information research.

Sewell’s contract includes $85 million guaranteed, the source told Schefter, the most for an offensive lineman, according to ESPN Stats & Information. The $28 million annual average salary in his contract is also the largest for an offensive lineman.

In a video posted to his Instagram story from Ford Field, St. Brown said, “I can’t wait. I’m here, four more years.”

The Lions can now turn their attention to getting an extension done with quarterback Jared Goff. Both parties have entered discussions about an extension, but nothing has been reached yet. Goff is entering the final year of his contract and has expressed interest to remain with the Lions after being traded from the Los Angeles Rams in 2021.

A deal with Goff is not imminent, a source told Schefter.

St. Brown, 24, was selected as a first-team All-Pro last season when he set career bests with 119 catches, 1,515 yards and 10 touchdown receptions.

Sewell, 23, also was selected as a first-team All-Pro for the first time last season. He and St. Brown became the Lions’ first two offensive players to make first team All-Pro since 1997. Both he and St. Brown have been selected to the past two Pro Bowls. Sewell joined Lomas Brown as the only Lions offensive tackles to have been named to the Pro Bowl in consecutive seasons.