The 24-year-old Bowman, a third-round draft pick out of Penn State in 2010, had 149 tackles, two sacks, an interception and a forced fumble this season as a second-year starter. As a rookie, his 20 special-teams tackles ranked third in the NFL.
Willis, 28, is wrapping up his sixth NFL season after making 120 tackles with two interceptions and a pair of forced fumbles.
"That's a young lion, man, that I talk to a lot," said retiring Ravens star Ray Lewis, whose No. 52 is worn by Willis. "Since he has come into this league, I've always been (talking to him) — since we met each other at the Pro Bowl and I knew his story and why he wears 52 and all that. It's a special story to become close with him like that. I always try to throw the smallest tidbits out to help his career out, to help him (know) how to get better, 'You should do this, you should do that.'"
Bowman and Willis were All-Pro picks together in each of the past two seasons. Aldon Smith joined them on this year's team.
And they have plans to do a lot more for the two-time reigning NFC West champion Niners (13-4-1).
Brooks is signed through 2017 and Smith through '15.
"Not just football, they're all great guys. I enjoy being around all of them," Bowman said. "We all can run. We all can do a lot of great things. Some teams only have one guy that can do certain things. I think that's what makes us unique. We have a chance to do something special, and we're going to prepare as if our lives depend on it for this game."
Last February, Brooks signed a six-year, $44.5 million contract extension with $17.5 million guaranteed. He has more than delivered on the new deal this season, his second as a full-time starter. Brooks had 46 tackles, 6½ sacks, two forced fumbles and an interception he returned 50 yards for a touchdown in a Nov. 25 win at New Orleans — so he should be plenty comfortable in the Superdome.