Your high - performance engine build needs the most advanced internal components that can handle high loads and RPMs. What makes King Engine Bearings great for both the track and the street? All King bearings are designed with extremely tight wall tolerances in the industry, with shells matched to 0.0001'. The increased rod bearing height enhances bearing - to - bore contact and heat transfer, significantly reducing the risk of spinning at high RPMs. With enlarged and chamfered oil holes for even oil distribution under heavy load, King bearings can withstand the highest temperatures at top engine speeds. King offers the industry's widest range of sizes, including special clearance options for custom builds. XP Bearings are made for dedicated track use or street cars in extended circle track races or endurance events. They are constructed from enhanced tri - metal copper lead, with a nickel barrier fused using the SecureBond adhesion process. XP bearings can handle 15% - 30% more load than traditional bearings and have a 0.0005' metallurgically enhanced and hardened performance overlay for better fatigue resistance. XP main bearings are half - grooved for maximum lower shell load capacity. When ordering bearings, remember: Engine bearings need proper tolerance measurement before purchase. If you're unsure about the size, consult a professional engine builder. We can't accept returns or exchanges for incorrectly ordered bearings or engine internal components. Also, Subaru main bearings are specific to the #5 journal bearing position. This position isn't related to VIN or year, so you must know it before buying. Engine internals aren't eligible for exchange or return.
Using these King Engine Main Bearings is straightforward. First, make sure you've correctly measured the tolerance of your engine before purchasing. If you're not sure about the size, it's best to talk to a professional engine builder. When installing, pay attention to the #5 journal bearing position for Subaru engines as this is specific to these bearings. During use, these bearings are built to handle high loads and RPMs, so you can push your engine hard on the track or on the street. For maintenance, keep an eye on the oil levels and quality. The enlarged and chamfered oil holes help with oil distribution, but clean oil is essential for the bearings' long - term performance. Remember, we can't accept returns or exchanges for incorrectly ordered bearings or engine internal components, so double - check what you need before buying.
