Pineiro finished the game 3-for-3 on field goal attempts, including a 52-yard conversion in the second quarter.
The Bears (1-1) went 1-of-2 on 50-yard field goals last season.
The last time the Bears made two 50-yard field goals in the same game was 2011 at the Oakland Raiders, according to ESPN Stats & Information.
Pineiro, 24, is a perfect 4-for-4 on the season after nailing his lone attempt in last week’s season-opening loss to the Green Bay Packers.
The Bears settled on Pineiro to replace Cody Parkey after an exhaustive offseason search that at one point included nine place-kickers at the club’s annual rookie minicamp in May.
The Bears traded for Pineiro in the spring after he spent last year on the Raiders’ injured reserve list.