ACL Performance Rod Bearing Set

2020 Toyota GR Supra - BMW B58B30, S58B30 3.0L Inline 6 Engine

6B1510H-.25

Overview:

The ACL Performance Rod Bearing Set is engineered specifically for the Toyota GR Supra 2020 model equipped with the BMW B58B30 and S58B30 3.0L inline 6-cylinder engines. Designed to replace the factory connecting rod bearings, this set is manufactured to a precise 0.010" (.25mm) undersize specification, ensuring optimal fitment and durability for engines requiring this bearing size. Ideal for enthusiasts and professional builders looking to maintain or enhance engine reliability under demanding conditions, these bearings provide a critical component for high-performance and daily-driven applications alike.

ACL’s rod bearings are trusted worldwide for their quality and performance, offering superior protection against wear and fatigue. Whether you are performing an engine rebuild, upgrade, or routine maintenance, this bearing set delivers consistent performance and peace of mind.

Key Features:

ACL Performance Rod Bearings combine advanced materials and precision engineering to meet the rigorous demands of modern high-performance engines. Key features include:

• Precision undersize dimension of 0.010" (.25mm) for exact fitment in engines requiring this specification
• Manufactured for BMW B58B30 and S58B30 3.0L inline 6 engines found in the 2020 Toyota GR Supra
• High-quality tri-metal construction for excellent wear resistance and load capacity
• Optimized surface finish to reduce friction and improve oil film retention
• Designed to withstand high RPM and increased power outputs typical of performance tuning
• Engineered to provide consistent oil clearance for reliable lubrication and reduced risk of bearing failure
• Durable coating to protect against corrosion and extend service life
• Manufactured under strict quality control standards to ensure dimensional accuracy and reliability

Construction & Design:

ACL rod bearings are constructed using a tri-metal layering process that includes a steel backing, a copper-lead intermediate layer, and a soft overlay designed to provide excellent conformability and embedability. This combination allows the bearings to accommodate minor imperfections in the crankshaft journal while maintaining a robust oil film to prevent metal-to-metal contact.

The 0.010" undersize dimension ensures that the bearings fit perfectly in engines where the crankshaft journals have been machined or ground to this size, maintaining proper oil clearance and preventing premature wear. The surface finish is carefully controlled to optimize oil retention and reduce friction, contributing to smoother engine operation and longevity.

Installation & Fitment:

This rod bearing set is designed for direct fitment in the 2020 Toyota GR Supra equipped with the BMW B58B30 and S58B30 3.0L inline 6 engines. Installation should be performed by a qualified technician or experienced engine builder to ensure proper bearing clearance and torque specifications are met. It is essential to verify the crankshaft journal size before installation to confirm compatibility with the 0.010" undersize bearings.

No modifications to the engine block or connecting rods are necessary when using this bearing set, provided the engine has been machined to the specified undersize dimension. Proper lubrication during installation and break-in procedures will help maximize bearing life and engine performance.

What's Included:

• Complete set of connecting rod bearings sized at 0.010" (.25mm) undersize
• Packaging and installation instructions

Ideal For:

This ACL Performance Rod Bearing Set is ideal for:

• Engine rebuilders and mechanics servicing the 2020 Toyota GR Supra with BMW B58B30 or S58B30 engines
• Performance enthusiasts upgrading or maintaining their inline 6 engines
• Motorsport applications requiring reliable and durable rod bearings
• Anyone needing precise undersize bearings for crankshaft journal repairs or machining

ACL Race Series is known for performance engine bearings used across motorsports, with rod and main bearing options engineered for durability under high load and heat. Their positioning centers on racing-focused design, metallurgy, and engineering intended to stand up to demanding competition engines.