HP Rod Bearing Set

The HP Rod Bearing Set from King Bearings is engineered for high-performance applications in classic Mopar B and RB-series engines, including the legendary 426 Hemi. These precision connecting rod bearings are designed for builders and mechanics who demand reliability under elevated boost, nitrous, or naturally aspirated horsepower levels. The 0.001-inch undersize specification allows for tighter clearances and improved oil film stability, critical when engine output exceeds stock parameters.

King Bearings' HP-grade bearing set features narrowed design and dowelled construction to enhance load distribution and prevent bearing spin under extreme rotational stress. The narrowed profile reduces parasitic drag while the dowel pins lock the bearing in place during high-rpm operation, preventing catastrophic failure that would otherwise result in spun bearings or rod knock. The 0.001-inch undersize finish allows precise fitting to freshly honed or reground crankshafts, ensuring proper operating clearance and maximum bearing longevity across the full RPM band.

This bearing set is ideal for restomod projects, race-prepped muscle cars, and street performance builds where stock connecting rod bearings cannot handle modified displacement or forced-induction duty. Proper installation requires accurate crankshaft sizing, meticulous journal cleaning, and correct bearing clearance verification with Plastigage before full assembly. These bearings are best paired with quality engine oil, aggressive oil cooling, and a robust rotating assembly to achieve their full performance potential.