A super PAC supporting former President Donald Trump unleashed a mobile billboard Friday attacking 2024 rival Robert F. Kennedy Jr. with the independent slated to make a speech at the Libertarian Convention in DC.

The billboard from Make America Great Again Inc. will be set up outside the Washington Hilton convention site from 10 a.m. to 2 p.m., and pans Kennedy as a “radical” — not a libertarian.

The ads on the billboard will feature the 70-year-old’s support for reparations, call to ban “assault rifles,” promotion of a 70% income tax rate, his endorsement of banning fracking and his support for the Green New Deal.

“RFK Jr. must be confused. He’s at the Libertarian Convention this weekend, not the Socialist Convention where his agenda of gun control, high taxes, and attacking fossil fuels would be welcome. President Trump is the only candidate that will keep taxes low, protect gun rights, and embrace American energy,” MAGA Inc. spokesman Alex Pfeiffer told The Post.

Kennedy’s appeal to libertarian voters will take place one day before Trump, 77, is scheduled to speak to the same group.

The attacks from Trump allies come as RFK Jr. continues to poll best among third-party candidate in the 2024 race, averaging around 10%, according to RealClearPolitics data.

One recent Marquette University Law School poll has Kennedy as high as 17%, giving him enough support to join Trump and President Biden on the debate stage — if both major candidates agree.

The Kennedy campaign did not immediately respond to an inquiry from The Post.

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