King Engine Bearings MB1337XP0.25-3 XP-Series Tri-Metal Main Bearing Set Oversize - 0.25mm

The King Engine Bearings MB1337XP0.25-3 is a high-performance main bearing set from King's XP-Series racing line, engineered for extreme performance applications. This bearing set features a 0.25mm oversize specification designed for precision engine rebuilds and performance applications requiring non-standard clearances.

Advanced Tri-Metal Construction:

• pMax Black tri-metal structure with layered copper lead construction for superior load capacity
• Nickel plate barrier with lead/tin/copper Babbitt overlay on steel backing for enhanced durability
• 24% harder than conventional tri-metal race bearings with fatigue resistance up to 10,200 psi
• Intermediate layer load capacity of 17,000 psi for extreme racing conditions

Precision Engineering Features:

• Industry-leading wall thickness tolerance of ±0.0001 inch for consistent performance
• Narrowed design optimized for large radius crankshafts
• Enlarged, chamfered oil holes for improved lubrication flow
• SecureBond etching process ensures superior multi-layer adhesion and structural integrity

King XP-Series bearings are specifically developed for race engines using forged steel aftermarket crankshafts that generate high loads for extended periods. These race-only Xtreme Performance bearings deliver consistent, reliable performance with exceptional load capacity to handle the extreme demands of high-performance racing engines.