ACL Standard Size Main Bearing Set

2017–2020 Toyota 86 / 2022–2024 Subaru BRZ / 2022–2024 Toyota GR86 FA20 Engine

5M8312HO/S2-STD

Overview:

The ACL Standard Size Main Bearing Set with +.002in outer diameter is engineered specifically for the FA20 engine found in the Toyota 86 (2017–2020), Subaru BRZ (2022–2024), and Toyota GR86 (2022–2024). Designed to meet or exceed OEM specifications, this bearing set provides reliable, durable performance for both street and track applications. Whether you are rebuilding your engine or upgrading for enhanced durability, ACL bearings offer precision fitment and robust construction to ensure smooth crankshaft rotation and long-lasting engine health.

Ideal for enthusiasts and professional rebuilders alike, this bearing set addresses the critical need for maintaining proper clearances and reducing friction in the engine’s main journals. The +.002in outer diameter sizing ensures a precise fit in engines requiring slight oversize bearings, helping to restore optimal oil clearance and improve overall engine reliability.

Key Features:

ACL main bearings are crafted with advanced materials and manufacturing techniques to deliver superior performance and durability. Key features include:

• Standard size bearing set with +.002in outer diameter for precise fitment
• Engineered specifically for the FA20 engine in Toyota 86, Subaru BRZ, and Toyota GR86
• High-quality tri-metal construction for excellent wear resistance and load capacity
• Optimized oil clearance to maintain proper lubrication and reduce friction
• Manufactured to strict OEM tolerances for reliable, consistent performance
• Ideal for engine rebuilds, repairs, and performance upgrades
• Durable design to withstand high RPM and demanding driving conditions
• Corrosion-resistant coating to protect against engine contaminants

Construction & Design:

ACL main bearings utilize a tri-metal design, combining a steel backing with layers of copper-lead and a soft overlay to provide excellent conformability and embedability. This construction allows the bearings to accommodate minor imperfections on the crankshaft journal surface while maintaining a strong load-bearing capacity. The +.002in outer diameter sizing is precision-machined to ensure a perfect fit within the engine block, restoring proper oil clearance and preventing premature wear.

Each bearing shell undergoes rigorous quality control and surface finishing processes to deliver a smooth, durable surface that promotes efficient lubrication and reduces friction. The corrosion-resistant coating further enhances longevity by protecting against oxidation and engine contaminants.

Installation & Fitment:

Installation of the ACL Standard Size Main Bearing Set is straightforward for experienced engine builders and mechanics. These bearings are designed as direct replacements for the specified FA20 engines and require no modifications to the engine block or crankshaft. Proper measurement of crankshaft journal diameters and oil clearances is recommended to confirm suitability before installation.

Ensure that all bearing surfaces and crankshaft journals are clean and free of debris prior to assembly. Follow manufacturer torque specifications and assembly procedures to achieve optimal bearing performance and engine reliability.

What's Included:

• Complete set of standard size main bearings with +.002in outer diameter
• Installation instructions and specifications (where applicable)

Ideal For:

This bearing set is ideal for:

• Engine rebuilders restoring FA20 engines in Toyota 86 (2017–2020), Subaru BRZ (2022–2024), and Toyota GR86 (2022–2024)
• Performance enthusiasts seeking durable, OEM-quality bearings for street or track use
• Mechanics performing routine engine maintenance or repairs requiring main bearing replacement
• Anyone needing precise +.002in oversize bearings to correct crankshaft journal wear or machining