Small businesses in Brooklyn are busy selling Knicks championship gear, as merchandise is flying off the shelves.

Angela Colavito, a Brooklyn native, came from the Catskills to Legend’s Sporting Goods in Bay Ridge.

“I picked up shirts for the nephews, and I was told to come back and get these [Knicks chains],” Colavito laughed.

Peter Lanza owns the store, which has been family-owned and operated for 40 years.

He said this is a business boom that he has not seen since 2000.

“Our busiest time ever was the Subway Series, Yankees versus Mets,” said Lanza. “This is topping it.”

Lanza said that in an era of online shopping, Knicks fans can come in for the hometown feel and old-school fun.

“It’s Brooklyn,” said Lanza. “You have to have thick skin when you come in because we’re going to bust your chops, and they bust back, and it’s a lot of fun.”

There was also a sea of orange and blue on Flatbush Avenue. Folks were stepping into Ragga Muffin to get their Knicks merch ahead of Thursday’s championship parade.

“Last three days, we were so busy,” said Bouba Diallo, a store employee.

Diallo said residents rely on Ragga Muffin for more affordable options.

“Everybody comes to Ragga Muffin because, Ragga Muffin, I can tell you, we are the best,” said Diallo.

Regardless of where you buy your gear, Knicks fans agreed — the way this championship is uniting the city is priceless.

“The energy is just great,” said Colavito. “It’s nice to see the city, everybody coming together, kind of hanging out and just having a good time.”