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King XP-Series Main Bearings

4.42 out of 5 stars 43 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.

Results 1 - 9 of 9

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

Part Number: KGB-MB5442XP

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Main Bearings, XP-Series, Copper/Lead/Nickel, Standard Size, Ford, Kia, Mazda, Mercury, Set of 5

Part Number: KGB-MB5304XPSTDX

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

Part Number: KGB-MB5304XP026

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Main Bearings, King XP-Series Main Bearings, .010 in., .25 mm Crankshaft Undersize, Tri-Metal, Ford, Mazda, Sold as a Set of 5

Part Number: KGB-MB5442XP025

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.25mm. Crankshaft Undersize, Ford, Kia, Mazda, Mercury, Set of 5

Part Number: KGB-MB5304XP025

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Main Bearings, XP-Series, Copper/Lead/Nickel, Standard Size, Ford, Kia, Mazda, Mercury, Set of 5

Part Number: KGB-MB5304XP

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

Part Number: KGB-MB5442XP026

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Main Bearings, AM-Series, Alecular Silicon, Standard Size, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278XP

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Main Bearings, XP-Series, Copper/Lead/Nickel, Standard Size, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278XPSTDX

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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