Both 27-year-olds were formerly on the books of Bloemfontein Celtic.
"I understand their philosophy, so I believe I will fit in easily," Maasdorp told the club's website.
“I have watched the recent games the team played. Very dangerous on the counter. Against Sundowns, we need to play with commitment the way we played against Pirates. I am convinced that we are not in the relegation zone for long.”
Mogapi, whose move was revealed by KickOff.com last week, said: “The team plays well. I think we tend to relax in the second half and concede unnecessary goal. I just want to assure the fans that we will play every game to win. We will work hard as a team.”
The Team of Choice are propping up the Absa Premiership standings with eight points from 16 games, and next host Q2 winners Mamelodi Sundowns at Harry Gwala Stadium on Saturday.