ACL Race Main Bearings Oversized +.001in Subaru Models (inc. 2002-2014 WRX / 2004+ STI)

The ACL Race Main Bearings blend design, metallurgy, and engineering to offer what high - performance drivers demand. Built to handle high RPM, these bearings are suitable for popular 4, 6, and 8 - cylinder Subaru models. Key features include a high - strength overlay plate with reduced thickness for better fatigue resistance, hardened steel backs on rod bearings for improved support and retention, increased crush for better holding, no flash plating on the back for enhanced heat transfer and grip, increased eccentricity to counter bore distortion at high RPM and aid in oil film formation, 3/4 grooved main bearings for optimized load - carrying and oil flow, tight wall tolerances for consistent clearances, and enlarged ID chamfers on bearing edges when needed for performance crankshafts.

Using these ACL Race Main Bearings is straightforward. First, make sure your engine is clean and free of debris before installation. Carefully place the bearings in their proper positions, following the engine's manual for correct alignment. When it comes to maintenance, check the bearings regularly for signs of wear, such as scratches or abnormal wear patterns. Also, keep an eye on the oil quality and change it at the recommended intervals to ensure proper lubrication. Remember, high - RPM conditions can put extra stress on the bearings, so don't push your engine too hard without proper warm - up. If you notice any strange noises or performance issues, stop using the engine and inspect the bearings right away.