Your high - performance engine build demands the most advanced internal components capable of withstanding high loads and RPMs. King Engine Bearings are both track - tough and street - smart. These bearings are designed with the tightest wall tolerances in the industry, with all shells matched to 0.0001'. A greater rod bearing height enhances bearing - to - bore contact and heat transfer, significantly reducing the risk of spinning at high RPMs. The enlarged and chamfered oil holes ensure equal oil distribution under heavy loads, making King bearings durable enough to handle high temperatures at top engine speeds. King offers the industry's widest range of sizing, including special clearance options for custom builds. XP Bearings are ideal for dedicated track use or street cars in extended circle track racing or endurance events. Made from enhanced tri - metal copper lead construction with a nickel barrier fused via a SecureBond adhesion process, XP bearings have a 15% - 30% higher load capacity than traditional bearings and a 0.0005' metallurgical enhanced and hardened performance overlay for better fatigue resistance. XP main bearings are 1/2 grooved for maximum lower shell load capacity. When ordering bearings, remember that 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 engine internal components. Size: (Suites 52mm Journal Size)
Using these King Engine Rod Bearings is straightforward. First, make sure to measure the proper tolerance of your engine before purchasing. If you're not confident in doing this, it's best to consult a professional engine builder. Once you've installed the bearings, your engine will be better equipped to handle high loads and RPMs. During use, pay attention to the engine's performance. If you notice any unusual noises or changes, it might be a sign of an issue. For maintenance, keep an eye on the oil levels and quality, as the enlarged and chamfered oil holes rely on good oil distribution. Remember, these bearings are built tough, but proper care will ensure their long - lasting performance. And don't forget, we can't accept returns or exchanges if the bearings are ordered incorrectly, so double - check the size requirements for your specific Subaru WRX or STI model from 2002 to 2021.
