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Premium Race Bearings. The King Engine Bearings Tri-Metal Perf Main Bearing Set is engineered to deliver superior performance for Subaru EJ20, EJ22, and EJ25 engines. Designed specifically for racing and high-stress applications, this bearing set supports reliable operation under extreme loads experienced in circle track, drag racing, and off-shore environments. It plays a critical role in supporting the crankshaft, ensuring smooth rotation and durability in demanding conditions.
Construction and Appearance. These bearings are manufactured using tri-metal lead bronze layered material combined with a proprietary nano-scaled hardening process applied to the Babbitt overlay. This produces the distinctive pMaxBlack finish, providing enhanced load capacity up to 10,200 PSI. The bearings are dimensioned for housing bore oversize by +.005 inches, promoting superior durability and consistent oil flow management.
Installation. Installation follows standard bearing replacement procedures and requires line honing the block to the specified oversize housing bore. The process is straightforward for experienced engine builders, with no special machining or complex modifications needed.
Application. Engineered for Subaru EJ20, EJ22, and EJ25 WRX engines, this bearing set fits housing bores line honed to +.005 inches. It is ideal for race-prepped blocks that demand precision main bearings combining durability and high performance.
King Engine Bearing MB5740XPG
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