Photos: Cup Series testing at Richmond Raceway

Six teams participated in a two-day test session scheduled Monday and Tuesday at Richmond Raceway, trying out a new splitter for potential use on short tracks and road courses in the 2024 NASCAR Cup Series. The angled "lift splitter" was intended to reduce the negative effects of turbulent, "dirty" air for trailing cars and has been tested with computer modeling and in the wind tunnel. Monday and Tuesday marked the next phase of testing for the new part, moving to the 0.75-mile Virginia track. Here, Christopher Bell's No. 20 Joe Gibbs Racing Toyota leads the pack during Tuesday's runs.

Officials introduced a pair of aero changes to the rear of the test cars in Tuesday's sessions, removing the diffuser and increasing the spoiler size to 4 inches (up from 2 inches) to adjust the cars' balance. Teams also cycled through different Goodyear tire compounds over the course of Tuesday's schedule.

Ryan Preece's No. 41 Ford follows Christopher Bell's No. 20 Toyota on the frontstretch at Richmond Raceway.

The six cars at the two-day test align two-by-two on the backstretch during Tuesday runs at Richmond Raceway.

Christopher Bell's No. 20 Toyota leads Justin Haley's No. 31 Chevrolet through the turns at Richmond Raceway in Tuesday test sessions.

Ryan Preece's No. 41 Stewart-Haas Racing Ford works through the banking at Richmond Raceway on Day 2 of testing.

Christopher Bell's No. 20 Toyota test car heads back to the Cup Series garage after a Monday morning run.

Noah Gragson (42), Christopher Bell (20) and Harrison Burton run together on the backstretch in a Monday afternoon group session. Multiple 30-lap runs were scheduled in the afternoon to see how the new aerodynamics perform in traffic.

Another view of the front splitter on the No. 21 Wood Brothers Racing Ford of Harrison Burton. Teams made adjustments with ride heights in one Monday afternoon session, providing a closer look at the splitter's contours.

William Byron guides the No. 24 Hendrick Motorsports Chevrolet through Turn 1 at Richmond Raceway.

Detailed front view of the front splitter on the No. 21 Wood Brothers Racing Ford as Harrison Burton brings it back to the Richmond Raceway garage.

Harrison Burton's No. 21 Ford races to the low side of of Justin Haley's No. 31 Kaulig Racing Chevrolet at Richmond Raceway.

The No. 41 Stewart-Haas Racing Ford driven by Ryan Preece finds its way back to the Cup Series garage at Richmond.

Noah Gragson's No. 42 Legacy Motor Club Chevrolet races ahead of Christopher Bell (20) and Harrison Burton during Monday afternoon testing at Richmond Raceway.

Justin Haley's No. 31 Chevrolet takes an angle in for corner entry at Richmond Raceway.

William Byron's No. 24 Chevy makes the rounds during Monday's testing at Richmond Raceway.

Another angle of the front splitter on the No. 21 Wood Brothers Racing Ford.

Ryan Preece's No. 41 SHR Ford leads the way on Richmond Raceway's back straightaway as the six teams participate in Monday afternoon testing.

Another view of the front of Ryan Preece's No. 41 Ford during Monday test sessions at Richmond Raceway.