King Engine Bearings MB5777XPSTDX Main Bearing Set GM Dart LS Next pMax Black

The King Engine Bearings MB5777XPSTDX is a high-performance main bearing set engineered specifically for GM Dart LS Next engine blocks. These race-grade bearings feature King's advanced pMax Black coating, a proprietary polymer treatment that provides exceptional wear resistance and reduced friction during engine break-in and high-stress operating conditions.

Key Features:

• Tri-metal construction for superior strength and durability under extreme loads
• pMax Black polymer coating reduces friction and accelerates break-in
• Standard (STD) size for precise OEM fitment in Dart LS Next blocks
• Race-quality engineering for high-performance and competition applications
• Designed to handle increased cylinder pressures and RPM ranges
• Enhanced oil retention grooves for improved lubrication

King Racing performance bearings are manufactured to exacting tolerances and are the choice of professional engine builders worldwide. The tri-metal construction combines a steel backing, copper-lead intermediate layer, and specialized overlay for optimal load distribution and fatigue resistance. The pMax Black coating provides critical protection during initial startup and helps prevent galling and scuffing in demanding racing environments.