Showcase of Underbone Racing Prowess at the IRGPXVIII Castrol POWER1 Ultimate Underbone Limited Grand Prix

Date posted on November 16, 2025
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Intermediate and Expert riders will go all out and all heart for supremacy at the Underbone Limited Grand Prix of the 18th Alpinestars IRGP. The race category is sponsored by Castrol POWER1 Ultimate.

07 Castrol Underbone Limited Gp

This marks the return of Castrol to the prestigious event. The brand is a pioneer supporter of the IRGP and has many years of participation at the celebrated race event. Castrol Limited is a British oil company that markets industrial and automotive lubricants, offering a wide range of oil, greases and similar products for most lubrication applications. Castrol, one of the world’s leading lubricant brands, has a proud heritage of innovation and fueling the dreams of pioneers.

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Castrol Philippines has appointed North Trend Marketing Corporation as its new master distributor in the Philippines effective August 3, 2022.

Castrol POWER1 Ultimate supports effective engine operation in five key areas: acceleration, wear protection, smooth riding, cooling, and durability. Castrol has launched its POWER1 ULTIMATE premium engine lubricant range for motorcycles and scooters with an advanced 5-in-1 FORMULA, new labels, and updated packaging. The product supports effective engine operation in five key areas: acceleration, wear protection, smooth riding, cooling, and durability. The refreshed Castrol POWER1 ULTIMATE lubricant range, which consists of a wide range of viscosities, helps to maximize performance and protection.

Castrol Power1 Ultimate

In efficiency tests, the new Castrol POWER1 ULTIMATE lubricant enabled the test motorcycle to travel eight meters further than its 10W-50 counterpart. Castrol POWER1 ULTIMATE is also proven to provide bikes and scooters with 50% better wear protection2. In addition, tests were conducted using a chassis dyno to assess smooth, judder-free clutch engagement3. Finally, testing demonstrated that Castrol POWER1 ULTIMATE lubricant helps engines to remain cool4 and maintain power5, even during extreme long-distance tests.

IRGPXVIII will be held at the Tarlac Circuit Hill from November 21-23. The race event is organized by InsideRACING and sanctioned by FIM NAMSSA and its affiliate USRA. It is fully supported by the provincial government of Tarlac.