Horrifying dashcam video shows a driver ramming a motorcyclist off the side of a highway in a high-speed road-rage attack — then racing off, leaving the biker with severe injuries, according to cops.

The Honda Civic and motorcycle were filmed racing past a commercial vehicle that caught the terrifying attack on its dashcam early Friday on I-75 in Sumter County, according to the Florida Highway Patrol.

The driver of the silver or gray 2020 Civic, which was identified by auto parts found at the scene, then “suddenly steered” to the shoulder and rammed the 52-year-old biker off the road, police said.

“The impact caused the motorcyclist to overturn several times into the wood line parallel to the roadway,” officials said in a press release.

There was no description of the hit-and-run driver who remained at large as of Monday.

It was not immediately clear what sparked the attack, which police only described as road rage.