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Main Bearing Set For General Motors 262, 267, 302, 307, 327, 350 - MB 557XPC

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MB 557XPC
Racing Main Bearings For General Motors 262, 267, 302, 307, 327, 350 - MB 557GPC
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(Only %1 left)
As low as $176.72
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XPC Series is King Bearings‘ premium race bearings, featuring the pMaxBlack™ overlay that increases hardness and topped by the innovative pMaxKote™ ceramic nano-composite polymer coating, that enhances wear & seizure resistance without altering the bearing's original wall thickness dimensions.
Commonly use for circle track, drag racing, off-shore, and other applications that utilize steel crankshafts. Features ceramic nano-composite polymer coating, that enhances wear & seizure resistance without altering the bearing's original wall thickness
Crankshaft Dim. Housing Dim. Length Thickness
Positions 1,2,3,4:
62.21 / 62.19 mm
2.4493 / 2.4483 inch

Position 5:
62.20 / 62.17 mm
2.4488 / 2.4478 inch		 67.10 / 67.07 mm
2.6416 / 2.6406 inch		 Positions 1,2,3,4:
20.4 mm
0.805 inch

Position 5:
43.7 mm
1.722 inch		 2.426 mm
0.0955 inch
Main Bearing Set For GM 262, 267, 302, 307, 327, 350 - MB 557XPC
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Suitable for engines
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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.

pMaxKote™
pMaxKote
Factory applied polymer coating

Inhouse developed Polymer coating for race applications, enhances seizure & wear resistance, with no added thickness.

U-Groove™
u-groove
Greater load surface

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

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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