And trouble is what Rangers defenseman Jacob Trouba has been for opponents during the spirited postseason journey the Blueshirts continued to ride with a 3-2 win over the Lightning in Game 2 of the Eastern Conference Final on Friday night at the Garden.

Trouba isn’t usually very present in the postgame summary. He doesn’t light the lamp very often, having scored just 21 goals in his three seasons with the Rangers, including one in 16 games this postseason.

What the 28-year-old Trouba — with his imposing 6-foot-3, 205-pound frame — does on occasion is light up opposing offensive threats with bone-jarring hits.

Ask Penguins star Sidney Crosby, who missed a game-and-a-half after a Trouba hit in Game 5 of the Rangers’ first playoff series. That hit changed the course of that series and had a big impact on the Rangers winning in seven games.

Ask Seth Jarvis of the Hurricanes, who left Game 7 of the Rangers’ second playoff series victory with an “upper-body injury’’ as a result of a mid-ice collision with Trouba.

Trouba didn’t knock any of the Lightning players out Friday night, though he did send center Anthony Cirelli helicoptering to the ice with a body blow in third period.

What Trouba did in his team-high 25 minutes and 14 seconds of ice time was block a game-high six shots, including one on a desperation dive in front of goaltender Igor Shesterkin on a mad scramble in front of the crease with a minute remaining

Fellow defenseman K’Andre Miller, who scored the Rangers’ first goal, summed Trouba up best when he said, “I know if I was on the opposing team, I wouldn’t want to go against him.

Rangers coach Gerard Gallant insisted before Game 2 that Trouba isn’t headhunting, that the Crosby and Jarvis injuries were merely incidental from the hard contact they took from him.