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King XP-Series Main Bearings MB 557XPSTDX Bearing, XP-Series, Copper/Lead/Nickel, Standard Size, Chevy, Small Block, Set of 5

SKU: KINGMB_557XPSTDX

Main Bearings

King XP-Series Main Bearings MB 557XPSTDX Bearing, XP-Series, Copper/Lead/Nickel, Standard Size, Chevy, Small Block, Set of 5

SKU: KINGMB_557XPSTDX

Main Bearings
A$195.49
IN STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

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Description

Main Bearing - XP - Standard - Extra Oil Clearance - Small Block Chevy - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 04:40:36

Data: v4.2 - Upd: 2026-11-09 11:14:40

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s King Engine Bearings, KING BEARINGS, King Racing
StreetFX SKU kingMB_557XPSTDX
SFX Item ID 4859706
Accounting SKU king-MB_557XPSTDX
Manufacturer SKU MB 557XPSTDX
Manufacturer UPC 611500565380
Alternative References KEBMB557XPSTDX, KGB-MB557XPSTDX, MB 557XPSTDX

Main Bearing, XP-Series, Copper/Lead/Nickel, Standard Size, Chevy, Small Block, Set of 5

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.

Product Attributes
BrandKing Engine Bearings
Manufacturer's Part NumberMB 557XPSTDX
Part TypeMain Bearings
Product LineKing XP-Series Main Bearings
UPC611500530180
Bearing UsagePerformance
Engine Crankshaft Undersize (in.)Stock
Engine Crankshaft Undersize (mm)Stock
Grooved BearingYes
Groove LocationUpper
Groove Style1/2
Thrust Bearing OversizeStock
Bearing MaterialTri-metal copper-lead nickel
QuantitySold as a set of 5.
NotesBearings have 0.001 in. more clearance than stock

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