ACL High Performance Main Bearing Set
2017–2020 Toyota 86 / 2022–2024 Subaru BRZ / 2022–2024 Toyota GR86 FA20 Engine
5M8312H-.25
Overview:
The ACL High Performance Main Bearing Set is engineered specifically for the FA20 engine found in the Toyota 86 (2017–2020), Subaru BRZ (2022–2024), and Toyota GR86 (2022–2024). Designed with a 0.25mm oversized specification, this bearing set provides enhanced durability and reliability for engines that require precision fitment due to machining or rebuilds. Ideal for enthusiasts and professional builders aiming to maintain or improve engine longevity under high-performance conditions.
These bearings are crafted to withstand the increased stresses of spirited driving, track use, or mild modifications, ensuring smooth crankshaft rotation and reduced wear. ACL’s reputation for quality and performance makes this bearing set a trusted choice for maintaining the integrity of your FA20 engine’s bottom end.
Key Features:
Engineered to meet the demands of high-performance applications, the ACL main bearings offer the following benefits:
- 0.25mm oversized design for precise fitment after crankshaft machining
- High-quality materials for superior wear resistance and durability
- Optimized surface finish to reduce friction and improve oil film stability
- Manufactured to strict tolerances for consistent performance and reliability
- Compatible with factory and aftermarket components for seamless installation
- Designed to handle increased loads from performance upgrades and track use
- Corrosion-resistant coatings to extend bearing life
- Tested to meet or exceed OEM specifications for peace of mind
Construction & Design:
ACL main bearings are constructed using premium bearing alloys that balance strength and fatigue resistance. The 0.25mm oversized dimension accommodates crankshaft undersizing, ensuring a perfect fit and optimal oil clearance. The bearing surfaces feature a finely polished finish to minimize friction and promote consistent oil film formation, which is critical for protecting the crankshaft journals under high load conditions.
Advanced manufacturing processes and rigorous quality control ensure that each bearing set delivers uniform thickness and roundness, reducing the risk of premature wear or failure. The design also incorporates corrosion-resistant coatings to protect against contaminants and extend service life.
Installation & Fitment:
This bearing set is intended for use with the FA20 engine in the specified Toyota 86, Subaru BRZ, and Toyota GR86 model years. Installation requires engine disassembly and precise measurement of crankshaft journals to confirm the need for the 0.25mm oversized bearings. Proper cleaning and lubrication during assembly are essential to ensure optimal bearing performance and longevity.
Professional installation is recommended to guarantee correct bearing clearance and alignment, which are critical for engine reliability. No modifications to the engine block or crankshaft are necessary beyond standard machining procedures.
What's Included:
- Complete set of ACL high performance main bearings, 0.25mm oversized
- Installation instructions and specifications for proper fitment
Ideal For:
This bearing set is ideal for engine builders, tuners, and enthusiasts who are rebuilding or upgrading the FA20 engine in the Toyota 86 (2017–2020), Subaru BRZ (2022–2024), or Toyota GR86 (2022–2024). It is especially suited for those who have had their crankshaft machined and require oversized bearings to maintain proper clearances. Whether for daily driving, track use, or mild performance enhancements, these bearings provide the durability and reliability needed to support your engine’s bottom end.
