ACL Race Main Bearings

2005–2010 Scion tC / 2008–2015 Scion xB2 2AZ-FE Engine

MB5646SI

Overview:

The ACL King Race Main Bearings are precision-engineered components designed specifically for the 2AZ-FE engine found in the 2005–2010 Scion tC and 2008–2015 Scion xB2 models. Built to meet the demanding requirements of high-performance and racing applications, these bearings deliver exceptional durability, endurance, and reliability at elevated RPMs. Whether you are upgrading your engine for track use or seeking enhanced longevity under strenuous conditions, King Race Bearings provide the critical support your engine needs to perform at its best.

Developed with advanced manufacturing techniques and materials, these race main bearings offer superior load capacity and consistent sizing, ensuring optimal crankshaft support and reduced wear. They are an ideal choice for enthusiasts and professional racers who demand precision and toughness from their engine internals.

Key Features:

ACL King Race Main Bearings incorporate cutting-edge technology and design to maximize engine performance and durability. Key features include:

• Engineered specifically for the 2AZ-FE engine in Scion tC (2005–2010) and xB2 (2008–2015)
• King Bull’s Eye Tolerance™ technology for unmatched bearing thickness consistency
• Advanced material composition for higher load capacity and enhanced wear resistance
• Track-proven performance for endurance and durability at high RPMs
• Available in standard size and oversize options (.25 and .75 mm) to accommodate engine rebuilds
• Manufactured with precise machining, overplating, and computerized wall thickness monitoring
• Designed for aftermarket performance applications with a focus on racing and high-stress environments
• Does not include thrust washers; sold separately and highly recommended for complete rebuilds

Construction & Design:

ACL King Race Main Bearings are crafted using premium materials and state-of-the-art production processes. The Bull’s Eye Tolerance™ technology ensures each bearing shell maintains consistent wall thickness, reducing variation and improving reliability across all sets. This precision manufacturing process combines advanced machining techniques with overplating and real-time computerized monitoring to deliver superior dimensional accuracy.

The bearing shells are engineered to withstand the increased loads and thermal stresses typical of high-performance engines. Their robust construction helps maintain optimal oil clearance and reduces the risk of premature failure, making them a trusted choice for racing and performance builds.

Installation & Fitment:

These race main bearings are designed as direct replacements for the factory bearings in the 2AZ-FE engine of the specified Scion models. Installation requires standard engine rebuild procedures, including proper cleaning, measuring, and fitting to ensure correct clearances. It is highly recommended to replace thrust washers separately to maintain proper crankshaft endplay and overall engine reliability.

Professional installation is advised to guarantee optimal performance and longevity, especially in high-performance or racing applications.

What's Included:

• Set of King Race Main Bearings (standard or oversize options)
• Packaging and installation instructions

Ideal For:

These ACL King Race Main Bearings are ideal for automotive enthusiasts, racers, and engine builders who require high-quality, durable engine bearings for the Scion tC and xB2 equipped with the 2AZ-FE engine. Perfect for track use, high-RPM applications, and performance engine rebuilds where reliability and precision are paramount.