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Main Bearing, XP-Series, Copper/Lead/Nickel, Standard Size, Chevy, Small Block, Set of 5
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Overview
Brand:
Manufacturer's Part Number:
MB 557XPSTDX
Part Type:
Product Line:
Summit Racing Part Number:
KGB-MB557XPSTDX
UPC:
611500530180
Bearing Usage:
Performance
Engine Crankshaft Undersize (in.):
Stock
Engine Crankshaft Undersize (mm):
Stock
Grooved Bearing:
Yes
Groove Location:
Upper
Groove Style:
1/2
Thrust Bearing Oversize:
Stock
Bearing Material:
Tri-metal copper-lead nickel
Quantity:
Sold as a set of 5.
Notes:
Bearings have 0.001 in. more clearance than stock
King XP-Series Main Bearings
Built with enhanced tri-metal, King XP-Series main bearings have a layered copper lead construction, with a nickel plate barrier and lead/tin/copper Babbitt overlay over a steel backing--in an adhesion process that provides superior stability and durability. King's advanced control measures hit a bull's-eye, maintaining wall thickness tolerances far tighter than their competitors: an amazing +/- .0001 in. The XP-Series main bearings are narrowed for large radii crankshafts and feature enlarged, chamfered oil holes with full, 3/4 in., or 1/2 in. grooving for improved oiling. They deliver consistent and reliable performance with a high-load capacity. These race-only Xtreme Performance (XP-Series) Tri-Lecular main bearings are proven track-tough to handle the ground-shaking power of your race engine. Hundreds of sets are available; order the bearings recommended for your vehicle.
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