Legacy Motor Club Promotes Chais Elaison to Crew Chief for No. 42 Team, Shaping Future Strategy Through 2027

CHARLOTTE, N.C. — In a significant organizational shakeup aimed at building long-term competitive depth, Legacy Motor Club (LMC) has officially announced the promotion of Chais Elaison to crew chief for the team’s No. 42 NASCAR Cup Series entry, driven by John Hunter Nemechek.

The move, which takes effect immediately for the remainder of the 2026 season, is designed not only to inject fresh strategic leadership into the remainder of the current campaign but also to lay a stable foundation for the future. Looking ahead to the 2027 NASCAR Cup Series season—when incoming driver Josh Berry is slated to take over the No. 42 entry—Elaison will remain at the helm, ensuring vital continuity for the team’s engineering and pit box operations.

Elaison steps into the role previously held by veteran crew chief Travis Mack, who is departing the organization. The transition marks a pivotal turning point for a Legacy Motor Club roster that has openly emphasized cultivating talent from within as it seeks to climb the competitive ladder in NASCAR’s premier division.

Main Facts: The Transition at Legacy Motor Club

The leadership change within the No. 42 Legacy Motor Club garage brings several immediate and long-term adjustments to light:

The New Leadership: Chais Elaison, formerly LMC’s strategy manager and senior performance engineer, takes over as crew chief for the No. 42 Toyota Camry XSE driven by John Hunter Nemechek.
The 2027 Blueprint: The promotion is not merely a temporary fix to close out 2026; Elaison is locked in to lead the No. 42 team into the 2027 season, where he will be paired with incoming driver Josh Berry, who was recently announced to join LMC.
The Departure: Elaison replaces Travis Mack, a veteran crew chief with over 200 Cup starts to his name, who has parted ways with the organization.
Internal Growth Focus: Co-owned by NASCAR legend Jimmie Johnson, Legacy Motor Club has heavily prioritized internal promotions, viewing Elaison’s ascension as proof of the team’s commitment to developing its engineering talent pool.

Chronology: Elaison’s Path to the Pit Box

To understand the magnitude of Elaison’s promotion, one must examine a career built on meticulous preparation, high-level engineering, and sporadic but impactful moments on top of the pit box.

Legacy Motor Club makes crew chief change, effective immediately

A graduate of Michigan Technological University—an institution renowned for producing elite engineering talent for the motorsports industry—Elaison spent years sharpening his craft behind the scenes. Before arriving at Legacy Motor Club, he built an impressive resume working with powerhouse organizations like Hendrick Motorsports and Trackhouse Racing.

During his time within the upper echelons of the NASCAR garage, Elaison was an integral part of championship-winning efforts, contributing to title runs in both 2016 and 2021. His comprehensive understanding of vehicle dynamics, tire degradation modeling, and race strategy eventually caught the eye of LMC leadership, leading to his hiring as senior performance engineer and strategy manager.

Elaison’s first taste of top-tier crew chief responsibilities came unexpectedly last year. Serving as an interim crew chief for Trackhouse Racing’s Shane van Gisbergen (SVG) at Kansas Speedway, Elaison guided the international road-course ace through a grueling oval event. Under Elaison’s strategic guidance, SVG secured his first-ever top-ten finish on a NASCAR oval—a career-defining performance that showcased Elaison’s ability to manage race strategy under pressure.

Now, after overseeing LMC’s engineering strategy through the bulk of the 2026 season, he gets his full-time opportunity atop the pit box.

Supporting Data: The Legacy of Travis Mack and Elaison’s Pedigree

Elaison inherits the No. 42 pit box from Travis Mack, a widely respected figure in the NASCAR garage who has left an indelible mark on the teams he has served.

Travis Mack’s Track Record

Over his career, Mack has commanded strategy from atop the pit box for more than 200 NASCAR Cup Series races. His crowning achievement as a crew chief came in 2022 when he guided Trackhouse Racing driver Daniel Suárez to his historic first-ever Cup Series victory at Sonoma Raceway.

Following his success at Trackhouse, Mack lent his expertise to Kaulig Racing before joining Legacy Motor Club for the past two seasons. During his tenure at LMC, Mack played a vital role in establishing operational baselines and assisting the organization through a transitional growth period following its rebrand from Petty GMS Motorsports.

Chais Elaison’s Technical Foundation

Elaison’s background bridges the gap between raw data science and real-time race execution.

Education: B.S. in Mechanical Engineering from Michigan Technological University.
Championship Pedigree: Contributor to championship-winning campaigns in 2016 and 2021.
Previous Organizations: Hendrick Motorsports, Trackhouse Racing, and Legacy Motor Club.
Key Milestone: Guided Shane van Gisbergen to his first career oval top-ten finish during an interim crew chief stint at Kansas Speedway.

Official Responses and Leadership Insight

The leadership at Legacy Motor Club has made it clear that investing in personnel is just as important as investing in machinery. Co-owner Jimmie Johnson emphasized that promoting from within aligns directly with the organization’s long-term vision.

"Promoting from within and giving our people the opportunity to grow is central to how we’re building Legacy," said Jimmie Johnson. "Chais has shown throughout this season that he’s ready for this. We’re looking forward to seeing what he and the No. 42 team can accomplish over these final eight races and into 2027."

Johnson also took time to acknowledge the contributions of the outgoing crew chief, praising Travis Mack for his foundational work with the organization.

"We’re thankful to Travis for his many contributions to Legacy and the No. 42 team," Johnson continued. "He has played a pivotal role in this organization and helping the CLUB during an important period of growth. We appreciate the foundation for excellence that he has helped build at Legacy and wish him continued success in his next endeavor."

For his part, Elaison expressed deep gratitude for the opportunity and a clear focus on the tasks immediately ahead.

"I’m grateful to Legacy for the opportunity to take this next step in my career," Elaison said. "I’ve learned a lot working with this group throughout the season, and I’m looking forward to putting that experience to work as we finish out 2026 with John Hunter and begin preparing for 2027. We have a strong group of people around this team, and I’m excited to lead them through the remainder of the season."

Implications: What This Means for John Hunter Nemechek, Josh Berry, and LMC

The transition in leadership carries several cascading implications for the future of Legacy Motor Club as the organization strives to bridge the gap toward becoming a consistent weekly contender in the Cup Series.

1. Immediate Chemistry with John Hunter Nemechek

With eight races remaining in the 2026 season, Elaison and Nemechek have an immediate window to build a working shorthand. Because Elaison has served as LMC’s strategy manager and senior performance engineer this year, he is already intimately familiar with Nemechek’s driving style, feedback preferences, and the behavioral tendencies of the No. 42 Toyota Camry. This familiarity should minimize the typical adjustment period associated with mid-season crew chief changes.

2. Early Foundation for Josh Berry’s 2027 Arrival

Perhaps the most strategic element of this promotion is the horizon line: 2027. With Josh Berry locked in to take over the No. 42 entry next season, keeping Elaison in place ensures that the engineering philosophy and communication structures established this year will not be discarded. When Berry steps into the car next February, he will inherit a crew chief who has spent months solidifying the team’s operational framework, providing much-needed stability for a driver entering a new chapter of his career.

3. A Cultural Shift Toward Analytical Leadership

Modern NASCAR relies heavily on simulation, data analytics, and real-time strategy models. By elevating an engineer with a deep background in performance metrics—spanning stints at championship-caliber shops like Hendrick Motorsports—Legacy Motor Club is signaling its intent to lean heavily into a data-driven approach. Elaison represents a new generation of crew chiefs who combine hands-on mechanical understanding with advanced computational strategy.

As the Cup Series heads into the final stretch of the 2026 campaign, all eyes will be on the No. 42 pit box. For Chais Elaison, these final eight races serve as both a proving ground for the present and the official launchpad for the future of Legacy Motor Club.