AO Racing chooses Halo By Orthene for 2025 IMSA campaign

AO Racing chooses Halo By Orthene for 2025 IMSA campaign

Press Release –

Partnership starts with the team’s first victory at the Twelve Hours of Sebring

AO Racing, the sports car team founded in 2022 to compete in the IMSA WeatherTech SportsCar Championship and endurance racing, has chosen to adopt Halo By Orthene’s world-leading Halo P1 brake fluid, and the partnership is immediately delivering results.

At the second race in the IMSA calendar, AO Racing’s Porsche 911 GT3 Rawr took a resounding victory in the GTD PRO category at the Twelve Hours of Sebring, using Halo P1. Leading 82 of the 329 laps, it marked the team’s first ever victory at Sebring.

Halo P1 is also used in the team’s LMP2 effort alongside the Porsche 911 GT3 Rawr, bearing the fan-favourite monikers of Spike the Dragon and Rexy, respectively.

Lloyd Ker, CEO, Halo By Orthene said: “We are extremely excited to partner with AO Racing for the 2025 season. Their recent emphatic victory at the 12 Hours of Sebring in the GTD Pro Class showcases their exceptional talent and commitment to excellence. AO Racing brings a perfect mix of performance, innovation, and fan engagement that we at Halo truly admire. Their vibrant presence in motorsport, highlighted by their iconic liveries and unique approach, aligns perfectly with Halo By Orthene’s distinctive and innovative approach to the market and are thrilled to support their journey, we look forward to an exciting and successful season, pushing the boundaries of performance.”Since Alan Ker founded the business in the mid-1970s, Orthene has built a legacy of cutting-edge science and relentless innovation in the brake fluid market. For example:

- Formulating the first low-hygroscopicity brake fluid – the forerunner of today’s DOT 4

- Developing the world’s first brake fluid to exceed a 300°C (572°F) boiling point

- Creating a DOT 5.1 low-viscosity fluid, another world first

“With the current regulations in modern sports car racing, the areas that we can gain a competitive advantage can be quite small,” said AO Racing Team Principal Gunnar Jeannette. “Brake fluid is one of the things that is open to a team to use to improve overall performance. We are very happy to partner with Halo By Orthene, as it gives our drivers the most consistent braking performance we’ve found.”

Developed in-house by Halo By Orthene, a specialist division of Orthene, the UK-based world-leading brake fluid manufacturer formed in 1976, Halo P1 is a dedicated motorsport brake fluid and the most advanced on the market. Halo P1 offers the highest typical dry boiling point of 341°C (646F) and unmatched incompressibility in the most extreme circumstances for unrivalled consistency of pedal feel and performance.

About Halo By Orthene

Halo By Orthene is redefining brake fluid as a critical performance component in motorsport. Backed by 50 years of chemical engineering expertise, Orthene Chemicals Ltd. has continuously pushed the limits of racing brake fluid, setting records for the highest boiling point - first at 320°C, then 330°C, and now over 340°C. Launched in 2024, its flagship product, Halo P1, delivers unmatched pedal consistency with a 341°C (646°F) dry boiling point. Used across top international racing series, Halo continues to advance brake fluid technology for elite motorsports. For more information, visit halobyorthene.com.

About AO Racing

With an unwavering commitment to on-track excellence and fan engagement, AO Racing commands attention with its fun liveries and fan-friendly presence, becoming a dynamic force in the sport. Central to AO Racing’s success is its unique blend of performance and personality. The iconic liveries of “Rexy” and “Roxy,” the T-Rex Porsche 911 GT3 Rawrs and “Spike” the LMP2 Dragon have captivated fans worldwide, earning AO Racing a dedicated following. With a focus on making racing accessible and enjoyable for enthusiasts of all ages, the team has a global footprint, with strong efforts in the IMSA WeatherTech SportsCar Championship and European Le Mans Series. With passion, precision, and a touch of flair, AO Racing is writing the next chapter in the annals of motorsport history.