ACL Conrod Bearings – Subaru BRZ (ZC6) / Toyota 86 (ZN6) / Subaru WRX (VA) – FA20

ACL Conrod Bearings – FA20 Applications

ACL Conrod Bearings are engineered for high-performance and motorsport use, delivering exceptional durability, load capacity, and oil control in demanding engines. Manufactured using ACL’s proven F781 bearing material, these bearings are designed to maintain stable oil films and consistent clearances under high RPM and high cylinder pressure conditions.

Key Features

• High-strength overlay plate with reduced thickness for improved fatigue resistance
• Hardened steel backing for enhanced bearing support and retention
• Increased crush for improved housing retention
• No flash plating on bearing backs for improved heat transfer
• Increased eccentricity to assist oil film formation at high RPM
• Tight, consistent wall tolerances for precise oil clearances
• Enlarged ID chamfers to suit performance crankshafts with large fillet radii

Technical Specifications

• Available Sizes: STD, 0.025, 0.25
• Half Type: Identical halves
• Material: F781
• Minimum Standard Shaft Size: 49.976 mm (1.9676 in)
• Maximum Standard Shaft Size: 50.000 mm (1.9685 in)
• Minimum Standard Tunnel Size: 53.000 mm (2.0866 in)
• Maximum Standard Tunnel Size: 53.024 mm (2.0876 in)
• Maximum Wall Thickness at Crown: 1.504 mm (0.0592 in)
• Maximum Overall Length: 15.6 mm (0.6142 in)

Application Notes

Designed for high-performance FA20-based engines, these ACL conrod bearings are ideal for street performance, track, and motorsport builds where reliability, oil control, and consistent bearing clearances are critical.