K-tunes Racing stands as one of the most distinctive professional motorsport organizations in Japan, operating as a high-performance racing division under the umbrella of Okayama Toyopet. Based in Kurashiki, Okayama Prefecture, the team has transitioned from a local dealership-backed initiative into a powerhouse within the Super GT series, specifically competing in the highly contested GT300 class. As of the current competitive landscape, the team is entering a significant era of transformation, characterized by a renewed technical partnership with Bridgestone for the 2026 season and a shift toward independent, specialized management under K-tunes Co., Ltd.

The Genesis of K-tunes Racing and the Kurashiki Spirit

Founded in 2013, K-tunes Racing was established not merely as a marketing tool, but as a strategic platform for technical excellence by Okayama Toyopet. The nomenclature of the team carries deep regional significance: the "K" is derived from Kurashiki, the city hosting the team's original GR Garage, while "tunes" reflects the fundamental mechanical philosophy of automotive tuning and performance optimization.

The team’s core identity is encapsulated in its eagle logo, a symbol chosen to represent strength, precision, and the ultimate pursuit of championship victory. The mission statement, "From Kurashiki to the World," underscores an ambition that extends beyond domestic success, aiming to cultivate a world-class automotive culture and technical proficiency among its staff. This initiative serves a dual purpose: providing entertainment for motorsport enthusiasts and acting as a rigorous training ground for dealership mechanics, who apply racing-derived precision to consumer vehicle maintenance.

Technical Analysis of the K-tunes RC F GT3 Platform

The cornerstone of K-tunes Racing’s competitive efforts in the Super GT series is the Lexus RC F GT3. This machine, designated as car number 96, represents the pinnacle of Lexus’s customer racing program.

Engine and Power Delivery

The Lexus RC F GT3 is powered by a naturally aspirated 5.0-liter V8 engine, known for its high-revving nature and linear power delivery. In the context of the GT300 class, this engine's performance is carefully regulated by the Balance of Performance (BoP) set by the GTA (Grand Touring Association). The V8 configuration provides a significant torque advantage in low-to-mid range acceleration, which is crucial for navigating technical sections of Japanese circuits like Okayama International Circuit and Sportsland SUGO.

Chassis and Aerodynamics

The chassis of the #96 machine is designed for endurance and high-speed stability. With a wheelbase typically measuring around 2,730 mm, the RC F GT3 offers a stable platform for high-speed cornering. The aerodynamic package includes a prominent front splitter, dive planes, and a massive rear wing, all of which are adjustable to suit the varying downforce requirements of the Super GT calendar.

Maintenance and Engineering Shift

A pivotal moment in the team's history was the decision to move from a collaborative maintenance model to an "in-house" system. Initially, K-tunes Racing operated in partnership with established teams like LM Corsa and utilized Inging Motorsport for vehicle maintenance. However, in recent years, the team has internalized these operations. This shift allows for greater control over setup data and fosters a closer relationship between the engineers and the mechanical staff recruited from the Okayama Toyopet service departments.

Competitive Record in the Super GT300 Class

K-tunes Racing has maintained a consistent presence on the podium since its entry into the Super GT series. The team’s historical data shows a win rate of approximately 9.6% across over 80 professional races, with a podium rate exceeding 22%.

The 2018 and 2019 Breakthroughs

The 2018 season marked a high point for the team as they secured two race wins. This momentum carried into 2019, where the team achieved a second-place finish in both the driver and team rankings. This period established the #96 Lexus as a perpetual threat to the podium, particularly at tracks that favor high-downforce GT3 machinery.

Recent Performance and Strategic Adjustments

Following a transition to Dunlop tires in 2020, the team experienced a period of technical recalibration. While maintaining a high finish rate—consistently above 89%—the pursuit of the top step of the podium became increasingly challenging due to the evolving tire wars in Super GT. By 2024 and 2025, the team focused on refining its aerodynamic efficiency and improving tire longevity, which resulted in several top-10 finishes and consistent qualifying performances in the low 1:18 to 1:20 range at Sportsland SUGO.

Veteran Leadership and the Driver Lineup

The competitive identity of K-tunes Racing is inseparable from its veteran driver pairing, which brings a level of experience nearly unmatched in the GT300 paddock.

The Role of Morio Nitta

Morio Nitta, often referred to within the industry as "Mr. GT300," holds the record for the most victories in the history of the GT300 class. His career, spanning decades of Japanese motorsport, provides the team with invaluable data interpretation skills. His ability to manage tire degradation over long stints is a critical factor in the team’s race strategy.

The Synergy with Shinichi Takagi

Partnering with Nitta is Shinichi Takagi, another titan of the category. The reunion of Nitta and Takagi in the K-tunes cockpit brought together two of the most successful drivers in the history of the series. Their combined experience allows the team to optimize the BoP-restricted Lexus RC F GT3, extracting maximum performance during qualifying sessions and maintaining steady pace during complex race conditions involving multi-class traffic.

Team Management

Under the supervision of Team Principal Masahiko Kageyama, himself an accomplished figure in Japanese racing history, K-tunes Racing has emphasized technical discipline and strategic flexibility. Kageyama’s leadership has been central to the team’s move toward independent management and its expansion into international categories.

Expansion into GT World Challenge Asia and the Japan Cup

K-tunes Racing has expanded its footprint beyond the Super GT series, participating in the GT World Challenge Asia and the Japan Cup. This expansion serves to diversify the team's technical experience and test their capabilities against a broader range of manufacturers and regulations.

The Ferrari 296 GT3 Initiative

In 2024, the team introduced a Ferrari 296 GT3 into their competitive rotation for specific series. This marked a departure from their traditional Lexus/Toyota-exclusive lineup and provided the engineering staff with exposure to the latest generation of mid-engine GT3 technology. The Ferrari's turbocharged V6 architecture offers a different performance profile compared to the naturally aspirated Lexus, requiring the team to adapt their fuel mapping and aerodynamic strategies.

Success in the GT4 Category

The team has also found success in the GT4 category, utilizing the Toyota GR Supra GT4 and its subsequent EVO iterations. In the 2025 Japan Cup Series, the team secured multiple podiums in the GT4 AM class, demonstrating their ability to manage multiple vehicle platforms across different racing tiers simultaneously.

Strategic Roadmap for 2026: The Bridgestone Return and New Identity

Looking toward the 2026 season, K-tunes Racing has announced several major strategic shifts aimed at reclaiming the GT300 title.

Tire Supplier Transition

Perhaps the most significant technical change is the decision to return to Bridgestone as the primary tire supplier. In the high-stakes environment of Super GT, where tire development is unrestricted for many top teams, the partnership with Bridgestone is seen as a move toward a more competitive tire package that offers superior peak grip and more predictable thermal degradation.

Visual Rebranding: Racing Red

To symbolize this new era of "passion" and "aggression," the team is updating its traditional black, white, and gray livery to include a dominant "Racing Red." This visual change coincides with the formal transfer of team operations to K-tunes Co., Ltd., a specialized entity designed to streamline motorsport management and separate professional racing functions from the core dealership business of Okayama Toyopet.

Community Engagement and Car Culture Promotion

K-tunes Racing views motorsport as an essential component of broader car culture. The team actively engages in community-building activities designed to bridge the gap between professional racing and the general public.

Driving Lessons and Safety Training

Leveraging the expertise of its professional drivers and mechanics, K-tunes Racing organizes driving lessons. These programs focus on advanced vehicle control and safety, promoting the idea that the skills developed on the track can lead to safer and more enjoyable driving on public roads.

Mechanic Development Program

The team serves as a high-pressure training environment for mechanics from Okayama Toyopet. By rotating dealership staff through the racing team, Okayama Toyopet ensures that their technicians are exposed to the highest levels of mechanical scrutiny and problem-solving, which ultimately benefits the dealership's customer base.

Media and Fan Content

Through unique initiatives such as documentary-style comics and behind-the-scenes digital content, K-tunes Racing maintains a strong connection with its fan base. This transparency helps humanize the technical world of professional racing and builds long-term loyalty toward the team and the Toyota/Lexus brands.

The 2025 Racing Schedule

For the 2025 season, K-tunes Racing is committed to a rigorous schedule across multiple circuits in Japan and Southeast Asia.

  • April: Super GT Round 1 at Okayama International Circuit.
  • May: Super GT Round 2 at Fuji Speedway and Inter Proto Series Round 1.
  • June: GT World Challenge Asia at Sportsland SUGO and Super GT Round 3 at Sepang International Circuit (Malaysia).
  • August: Super GT Round 4 (Fuji) and Round 5 (Suzuka).
  • September: Intercontinental GT Challenge (Suzuka 1,000 km) and Super GT Round 6 (SUGO).
  • October: Super GT Round 7 at Autopolis.
  • November: Super GT Round 8 at Mobility Resort Motegi.

This schedule highlights the team’s endurance and the logistical complexity of managing a multi-series campaign that includes both domestic and international rounds.

Summary of Team Outlook

K-tunes Racing represents a unique intersection of corporate vision and pure sporting ambition. From its origins as a dealership project in Kurashiki to its current status as a sophisticated independent racing entity, the team has consistently prioritized technical evolution and regional pride. With the upcoming transition to Bridgestone tires and the introduction of a more aggressive strategic identity in 2026, K-tunes Racing is positioning itself to be a primary contender for the Super GT300 championship. Their continued investment in both veteran talent and internal engineering capabilities ensures that the #96 Lexus RC F GT3 remains one of the most respected entries on the Japanese grid.

Frequently Asked Questions (FAQ)

What is the primary car used by K-tunes Racing?

The team primarily competes with the Lexus RC F GT3 in the Super GT series. They also utilize the Ferrari 296 GT3 and the Toyota GR Supra GT4 in other competitions like the Japan Cup.

Who owns K-tunes Racing?

The team is operated by Okayama Toyopet, a prominent Toyota dealership group in Japan, and managed under the specialized entity K-tunes Co., Ltd.

What is the significance of the number 96?

Number 96 is the traditional racing number for the team's primary entry in the Super GT300 class, often associated with their Lexus RC F GT3.

Why did the team switch to Bridgestone tires?

The switch, planned for the 2026 season, is a strategic move to improve overall performance and grip levels, as Bridgestone is widely considered one of the most competitive tire manufacturers in the Super GT series.

Where is K-tunes Racing based?

The team is headquartered in Kurashiki, Okayama Prefecture, Japan.