Racing Tri-metal For Honda 4, B18A1/B18B1 - CR 439XPD

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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
45.00 / 44.98 mm
1.7716 / 1.7707 inch
48.02 / 48.00 mm
1.8907 / 1.8898 inch
19.4 mm
0.764 inch
1.504 mm
0.0592 inch
Bearings contain holes for dowel pins
Connecting Rod Bearing Set For HONDA 4, B18A1/B18B1 - CR 439XPD
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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.

Dowel Hole
Additional Stability for the Shell

Enables adding a locating pin, thus improving bearing stability particularly in aluminum housing, that may be compromised by excessive housing expansion and loosing bearing press fit, that occurs in extreme heat conditions.

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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