ACL High Performance Main Bearing Set
2017–2020 Toyota 86 / 2022–2024 Subaru BRZ / 2022–2024 Toyota GR86 FA20 Engine
5M8312H-.025
Overview:
The ACL High Performance Main Bearing Set oversized by 0.025mm is engineered specifically for the FA20 engine found in the Toyota 86 (2017–2020), Subaru BRZ (2022–2024), and Toyota GR86 (2022–2024). Designed for enthusiasts and professional builders seeking enhanced durability and reliability, this bearing set provides a precise fit for engines requiring an oversized main bearing solution. It is ideal for performance rebuilds, engine upgrades, or maintenance where improved bearing clearance and strength are critical.
ACL’s reputation for quality and performance ensures that these bearings deliver consistent oil film retention and superior wear resistance, helping to extend engine life under demanding conditions.
Key Features:
This high performance main bearing set incorporates advanced engineering and materials to meet the rigorous demands of modern sport compact engines. Key features include:
- Oversized by 0.025mm to accommodate engine block machining and ensure optimal bearing clearance
- Manufactured from premium tri-metal materials for enhanced load capacity and durability
- Precision ground for exact fitment to FA20 engine main journals
- Superior oil retention grooves to maintain consistent lubrication under high RPM and load
- Designed to reduce friction and wear, improving engine efficiency and longevity
- Compatible with factory and aftermarket components without modification
- Tested to meet or exceed OEM specifications for performance and reliability
Construction & Design:
ACL main bearings are crafted using a tri-metal construction that combines a steel backing with layers of copper-lead and a thin overlay of babbitt material. This combination provides excellent conformability and embedability, allowing the bearing to adapt to minor imperfections in the crankshaft while resisting fatigue and wear. The oversized 0.025mm dimension ensures a precise fit for blocks that have been machined or require additional clearance, maintaining optimal oil film thickness for reliable operation.
Each bearing shell is precision ground and honed to exact tolerances, ensuring consistent journal contact and smooth crankshaft rotation. The design incorporates strategically placed oil grooves and holes to maximize lubrication flow, reducing the risk of metal-to-metal contact under high-stress conditions.
Installation & Fitment:
This bearing set is a direct replacement for the main bearings in the FA20 engine of the specified Toyota 86, Subaru BRZ, and Toyota GR86 model years. Installation requires standard engine rebuild procedures, including proper measurement of crankshaft journals and bearing clearances to confirm the oversized dimension is appropriate. No modifications to the engine block or crankshaft are necessary beyond standard machining practices.
Professional installation is recommended to ensure correct bearing clearance and alignment, which are critical for engine longevity and performance.
What's Included:
- Complete set of oversized 0.025mm main bearings for FA20 engine
- Installation instructions and specifications
Ideal For:
This ACL High Performance Main Bearing Set is ideal for automotive enthusiasts, tuners, and engine builders working on the Toyota 86 (2017–2020), Subaru BRZ (2022–2024), and Toyota GR86 (2022–2024) equipped with the FA20 engine. It is especially suited for those performing engine rebuilds, upgrades, or repairs where enhanced bearing durability and precise fitment are required. Whether for street performance, track use, or motorsport applications, these bearings provide the reliability and quality demanded by high-performance engines.
