ACL Bearings 4B1972HXD-STD Performance Rod Bearing Set

The ACL Bearings 4B1972HXD-STD is a high-performance connecting rod bearing set engineered for demanding automotive applications. These bearings feature ACL's advanced Race Series construction with extra high-density polymer coating for superior durability and friction reduction.

Key Features:

• Race Series construction with HXD (High Extra Density) tri-metal design
• Advanced polymer coating reduces friction and provides excellent wear resistance
• Standard size (STD) for precise OEM fitment
• Increased fatigue strength for high-performance and racing applications
• Improved oil retention characteristics for enhanced lubrication
• Precision manufactured to strict tolerances for optimal clearances

ACL Race Series bearings are designed to withstand the extreme loads and temperatures found in high-performance and racing engines. The tri-metal construction combines a steel backing, copper-lead intermediate layer, and polymer overlay to deliver exceptional strength, embeddability, and conformability.