Jeremy Bullins exits RFK Racing as Keselowski changes crew chiefs

NXTbets Pro | Published On: September 21, 2026

Bullins exits RFK

Bullins has left RFK Racing, ending his run as crew chief for Keselowski’s No. 6 team and closing out a two-year partnership with the driver and the No. 6 Ford. Bullins joined RFK Racing before the 2025 season, and the team moved on from a pairing that had given Keselowski a familiar voice atop the pit box. The departure changed the No. 6 program. Bullins had also previously worked alongside Keselowski at Team Penske.

The move matters because the Bullins-Keselowski relationship had already produced real results at the Cup level. Their first run together at Team Penske lasted from 2020 through 2021, and it delivered five NASCAR Cup Series wins. It also carried them into the Championship 4, a marker that showed how well the combination could perform when the stakes were highest. That history made his exit more than a routine personnel shift, because it broke up a proven combination that had already worked in two different settings.

Bullins’ departure left Keselowski facing another adjustment in the No. 6 camp. Crew chief changes can reshape communication, strategy and race-day rhythm, and this one came with the added weight of Bullins’ past success with the driver. RFK Racing treated Bullins as an important part of the organization and closed the book on his stint with a note of respect. That tone underlined how central he had been to the team’s competition group and how much the organization valued the work he put in during a short but meaningful stay.

Keselowski changes crew chiefs

RFK Racing described Bullins as a key leader and strategic voice in the organization, a sign that his role went beyond the standard crew chief label. The team also said he had been a “terrific teammate” and a “vital member” of its competition group. That language pointed to the broader impact he made inside the garage. Bullins was not just responsible for calls on the No. 6 pit box. He also carried influence across the competition side of the operation, where teams depend on clear feedback, sharp planning and steady communication to keep pace in a demanding Cup Series environment.

The team’s message also made clear that it viewed Bullins’ exit as a transition rather than a setback. RFK Racing said it was excited for Bullins and his family as he moved on to a new opportunity. That phrasing gave the departure a forward-looking tone and acknowledged that Bullins’ next step lay outside the organization. It also reflected the kind of personnel move that often happens in NASCAR when teams reset for the next stretch of the schedule. The driver and crew chief relationship can define an operation, so when that link changes, the entire team feels the shift.

For Keselowski, the change meant another new working arrangement on the No. 6 Ford after a partnership that had already seen success with Bullins and before that at Team Penske. Bullins had given the team a direct line to a crew chief with championship-stage experience and a track record of winning with the same driver. That background made the split more meaningful, because it removed a trusted voice from a pairing that had already proven it could contend. RFK Racing had to carry that knowledge forward without Bullins in the room, and Keselowski once again adapted to a new race-day structure as the team moved on.

Skarbowski was slated to step in at Kansas

Mike Skarbowski was slated to serve as Keselowski’s crew chief starting that weekend at Kansas Speedway, giving RFK Racing an immediate replacement on the No. 6 pit box. The handoff marked the next phase for the team after Bullins’ departure and kept the focus on continuity as the schedule moved ahead. Kansas Speedway was set to become the first test for the new setup, with Skarbowski slated to step into a role that carried direct responsibility for the car, the calls and the communication that drove race-day execution.

That kind of transition can have a fast effect because a crew chief changes the entire tone of a team. He sets the strategy, works with the driver and helps manage adjustments through the race. Skarbowski was set to take over after a successful run by a crew chief whose work with Keselowski already included five Cup wins and a Championship 4 appearance at Team Penske. The comparison was unavoidable because Bullins helped shape the No. 6 operation, and the new arrangement had to establish its own rhythm quickly.

RFK Racing thanked Bullins and recognized his leadership. Skarbowski was slated to take on immediate responsibility at Kansas Speedway. Keselowski, meanwhile, faced a crew chief change.