This song features vocals by Conor Maynard. The English singer-songwriter is best known for his UK Top 5 singles "Can't Say No" and "Vegas Girl" and "R U Crazy."
Cash Cash said that working with Maynard was a "very natural collaboration:"
"He's one of those singers that can just throw it down the first time and make it sound finished," they explained. "We attached the production with a hyped energetic feel to give some contrast to the lyrics, and we're very pleased with the way they complimented each other. The emotion in his voice really brought out the concept of the song, and gave us chills when we first listened back."
"Kickstart My Heart" is about all the ways Motley Crue gets their blood flowing without drugs. It was inspired by their bass player Nikki Sixx, who claimed he had to be revived with a shot of adrenaline to the heart after an overdose.