King's TechLab - Excel and Exceed

TechLab is our starting point for exploring new technologies. It’s where our new products and features are designed, tested and validated.

Our TechLab R&D culture focuses on constant analysis of what can be done to support ever increasing race engine loads, and how to improve bearing durability.

One of those technologies is U-GROOVE™.

In racing main bearings, the groove’s shape and size perform a vital role. The groove should be wide enough to allow sufficient oil flow, but narrow enough to maximize the working surface

In today’s race engines, contrary to popular belief, there is significant load on the upper main bearing shells. The extra load is a product of the inertia forces generated by high RPM.

The extra force demands higher load capacity.

In response, King Racing’s TechLab developed U-Groove™ – a unique 90⁰ oil groove shape.

U-Groove™ increases bearing load capacity by expanding the surface area, while keeping oil flow capacity intact.

Click Here for the Application Guide Find Your Set - King Catalog
U-GROOVE ™ benefits:
  • Better load distribution across the bearing surface
  • A more stable hydrodynamic lubrication regime
  • Greater bearing durability at high RPM’s
U-GROOVE ™ On Youtube