Racing Tri-metal For Chevrolet 265, 283, 302, 327 V8 - MB 554XP

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King Bearings popular XP Series features the pMaxBlack™ overlay - producing superior load capacity. XP is a tri-metal Lead Bronze layered material, with a nano-scaled hardening process of Babbitt overlay that withstands 10,200 PSI load. Ideal for Circle Track, Drag Racing, off-shore, and other applications that utilize steel crankshafts.
Commonly use for most of the race applications including circle track, drag racing, off-shore, and other applications that utilize steel crankshafts
Crankshaft Dim. Housing Dim. Length Thickness
Positions 1,2,3,4:
58.40 / 58.38 mm
2.2993 / 2.2983 inch

Position 5:
58.39 / 58.36 mm
2.2988 / 2.2978 inch
63.29 / 63.26 mm
2.4916 / 2.4906 inch
Positions 1,2,3,4:
20.5 mm
0.806 inch

Position 5:
43.7 mm
1.722 inch
Positions 1,2,3,4:
2.426 mm
0.0955 inch

Position 5:
2.428 mm
0.0956 inch
Main Bearing Set For CHEVROLET 265, 283, 302, 327 V8 - MB 554XP
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Performance features

Material features

Tech Features

Copper Based
Copper Based
Tri-Metal Copper based material

Leaded or Lead Free tri layers bearings for low to heavy load engines.

Superior load capacity

Overlay features proprietary nano-scaled hardening process producing superior load capacity.

Greater load surface

A 90⁰ oil groove shape, keep oil flow intact, increases bearing load capacity by expanding the surface area.

Optimal crush height and heat transfer

An optimal crush height value obtained from an optimization process of each performance bearing crush height

Superior hydrodynamic lubrication

An optimized eccentricity value reached through elasto-hydrodynamic analysis and dynamic calculations.

Bulls Eye™
Bull's Eye Tolerance

Outperforms the industry’s wall thickness tolerance, ensuring the least thickness variation shell-to-shell.

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