The KC Masterpiece 400 was a Monster Energy NASCAR Cup Series race held on May 12, 2018, at Kansas Speedway in Kansas City, Kansas. Contested over 267 laps on the 1.5 mile (2.4 km) asphalt speedway, it was the 12th race of the 2018 Monster Energy NASCAR Cup Series season.
Kansas Speedway is a tri-oval race track in Kansas City, Kansas. It was built in 2001 and hosts two annual NASCAR race weekends. The Verizon IndyCar Series also raced at here until 2011. The speedway is owned and operated by the International Speedway Corporation.
Matt Kenseth, who last raced in the 2017 Ford EcoBoost 400, made his first Cup series return, in the No. 6 for Roush Fenway Racing, doing so part-time. This was also the first Cup race since the 2014 Quicken Loans Race for Heroes 500 where Trevor Bayne did not participate.
Kevin Harvick was the fastest in the final practice session with a time of 29.009 seconds and a speed of .
Kevin Harvick scored the pole for the race with a time of 28.600 and a speed of .
Stage 1 Laps: 80
Stage 2 Laps: 80
Stage 3 Laps: 107
Fox Sports covered their eighth race at the Kansas Speedway. Mike Joy, three-time Kansas winner Jeff Gordon and Darrell Waltrip called in the booth for the race. Jamie Little, Vince Welch and Matt Yocum handled the action on pit road for the television side.
MRN had the radio call for the race which was also simulcasted on Sirius XM NASCAR Radio. Alex Hayden, Jeff Striegle and Rusty Wallace called the race in the booth when the field raced through the tri-oval. Dave Moody covered the race from the Sunoco spotters stand outside turn 2 when the field is racing through turns 1 and 2. Mike Bagley called the race from a platform outside turn 4. Pete Pistone, Kim Coon, and Steve Post worked pit road for the radio side.