ACL Bearings 4B1171HX-STD Race Connecting Rod Bearing Set for Nissan L-Series Z-Series

The ACL Bearings 4B1171HX-STD is a high-performance Race Series connecting rod bearing set designed for Nissan L-Series and Z-Series engines. This tri-metal bearing set is engineered for enthusiasts and racers who demand superior durability and performance in high-RPM applications.

Key Features:

• HX-STD designation provides an extra 0.001" (0.025mm) oil clearance compared to standard H-STD bearings
• Wall thickness is 0.0005" (0.013mm) thinner than standard H bearings for optimized clearance
• Tri-metal construction with high-strength overlay plate featuring reduced thickness for improved fatigue properties
• Hardened steel backing on all rod bearings for enhanced support and durability
• Precision-manufactured to exacting tolerances for reliable fit and consistent clearances
• Improved heat conduction, oil grooves, and oil distribution for superior lubrication
• Standard size bearing set with identical halves using F781 bearing material

Technical Specifications:

• Bearing Size: STD (Standard)
• Max Overall Length: 22.1mm (0.87")
• Max Shaft Size: 49.975mm (1.9675")
• Max Tunnel Size: 53.013mm (2.0871")
• Bearing Material: F781

This bearing set is compatible with multiple Nissan engine families including L13, L14, L16, L18, L20B, LD20, LD20-T, LD23, Z16, Z18, Z20, Z22, Z24, and FJ20 series engines. ACL Race Series bearings are specifically designed for engine tuning and performance upgrades where superior bearing capacity and reliability are essential.