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King XP-Series Main Bearings
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King Engine Bearings

King XP-Series Main Bearings

4.47 out of 5 stars 47 Customer Reviews

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

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 perfor

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.

Showing In Stock Items. Show All 22 Items.

Results 1 - 12 of 12

King XP-Series Main Bearings MB5013XP

King XP-Series Main Bearings MB5013XP

King XP-Series Main Bearings MB5013XP

Main Bearings, XP-Series, Standard, Tri Metal, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Saab, V8, Set

Part Number: KGB-MB5013XP

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5013XP STDX

King XP-Series Main Bearings MB5013XP STDX

King XP-Series Main Bearings MB5013XP STDX

Main Bearings, XP-Series, Copper/Lead/Nickel, Standard Size, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XPSTDX

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5013XP 010

King XP-Series Main Bearings MB5013XP 010

King XP-Series Main Bearings MB5013XP 010

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.010 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP010

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5013XP 010X

King XP-Series Main Bearings MB5013XP 010X

King XP-Series Main Bearings MB5013XP 010X

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.010 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP010X

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5013XP 001

King XP-Series Main Bearings MB5013XP 001

King XP-Series Main Bearings MB5013XP 001

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.001 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP001

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5013XP 020

King XP-Series Main Bearings MB5013XP 020

King XP-Series Main Bearings MB5013XP 020

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.020 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP020

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB1328XP STDX

King XP-Series Main Bearings MB1328XP STDX

King XP-Series Main Bearings MB1328XP STDX

Main Bearings, King XP-Series Coated Main Bearings, Stock Size, Tri-Metal, Chevy, Pair

Part Number: KGB-MB1328XPSTDX

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5777XP

King XP-Series Main Bearings MB5777XP

King XP-Series Main Bearings MB5777XP

Main Bearings, XP-Series, Performance, Tri-Metal, Dart LS Next, Set of 5

Part Number: KGB-MB5777XP

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB5777XP STDX

King XP-Series Main Bearings MB5777XP STDX

King XP-Series Main Bearings MB5777XP STDX

Main Bearings, XP-Series, Performance, .001 Extra Clearance, Tri-Metal, Dart LS Next, Set of 5

Part Number: KGB-MB5777XPSTDX

Not Yet Reviewed

Estimated Ship Date: Monday 11/16/2026 if shipped by air

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Estimated Ship Date: Monday 11/16/2026 if shipped by air

King XP-Series Main Bearings MB4272XP

King XP-Series Main Bearings MB4272XP

King XP-Series Main Bearings MB4272XP

Main Bearings, XP-Series, Standard, Tri Metal Copper-Lead Nickel, Chevrolet, Buick, Cadillac, Pontiac, Saab, Saturn, Suzuki, V6, Set

Part Number: KGB-MB4272XP

Not Yet Reviewed

Estimated Ship Date: Feb 10, 2027 if ordered today

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Estimated Ship Date: Feb 10, 2027 if ordered today

King XP-Series Main Bearings MB5739XPG

King XP-Series Main Bearings MB5739XPG

King XP-Series Main Bearings MB5739XPG

Main Bearings, King XP-Series Main Bearings, Stock Size, Tri-Metal, Subaru, Sold as a Set

Part Number: KGB-MB5739XPG

Not Yet Reviewed

Estimated Ship Date: Feb 10, 2027 if ordered today

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Estimated Ship Date: Feb 10, 2027 if ordered today

King XP-Series Main Bearings MB5739XPG.026

King XP-Series Main Bearings MB5739XPG.026

King XP-Series Main Bearings MB5739XPG.026

Main Bearings, King XP-Series Main Bearings, .001 in., .026 mm Crankshaft Undersize, Tri-Metal, Subaru, Sold as a Set of 5

Part Number: KGB-MB5739XP0026

Not Yet Reviewed

Estimated Ship Date: Feb 11, 2027 if ordered today

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Estimated Ship Date: Feb 11, 2027 if ordered today

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