SPARTA, KENTUCKY - JULY 08: Kyle Busch, driver of the #18 Snickers Toyota, looks on before the Monster Energy NASCAR Cup Series Quaker State 400 presented by Advance Auto Parts at Kentucky Speedway on July 8, 2017 in Sparta, Kentucky. (Photo by Jerry Markland/Getty Images)

Kyle Busch takes to Twitter to deliver a profane message to his nemisis

The track is not the only place NASCAR drivers Brad Keselowski and Kyle Busch get after it. The longtime rivals are known to have an icy relationship, but things are certainly heating up between the two on social media.

During practice for the Chicagoland Cup Series Final where Toyota Racing took the top four spots, Keselowski took to Twitter to complain about what he sees as NASCAR's favoritism of Toyota:

It didn't take long for Busch to post a strong response:

Busch later explained to NBC Sports that he felt Keselowski's tweets were out of line and discounting all the hard work his team has put in.

"I've just got to say of how proud I am of all our Toyota, TRD teammates and guys and teams, Furniture Row, Joe Gibbs Racing, TRD ... the whole package is there. It takes a lot of hard work and dedication from a lot of great people, and I feel like right now all he's doing is slapping these people across the face."

Keselowski wasn't done tweeting:

Needless to say, all this talk is going to play out in a very interesting race on Sunday.