Racing Tri-metal For Chevrolet SBC 307CI 350CI & GEN III/IV - CR 807XPN

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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
53.34 / 53.31 mm
2.1000 / 2.0990 inch
56.52 / 56.51 mm
2.2252 / 2.2247 inch
20.1 mm
0.791 inch
1.573 mm
0.0619 inch
Bearings are narrower than typical OE/Stock version, for fillet crankshat
Connecting Rod Bearing Set For CHEVROLET SBC 307CI 350CI & GEN III/IV - CR 807XPN
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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.

pMaxBlack™
pMaxBlack
Superior load capacity

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

Narrowed
Narrowed
Narrowed Bearing Length

Enabeling to clear large filet cranks.

Radialock™
Radialock
Optimal crush height and heat transfer

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

Eccentrix™
Eccentrix
Superior hydrodynamic lubrication

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

Bulls Eye™
Bull's Eye Tolerance
PERFECT CLEARANCE IN EVERY SET

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

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