SKU: 23608935011

King Engine Bearings Main Bearing Set (MB7039XPCSTDX)

Sale price$141.62 Regular price$157.35
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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

King Engine Bearings Main Bearing Set (MB7039XPCSTDX)Todays sport compact race engines make more power than ever before. Yesterdays engine bearings load capacity no longer works for todays sport compact race engines. Tomorrows engines will be even more powerful. King bearings meet these demands with higher performance benchmarks, advanced materials and unique geometrical features. King Racings SV, GPC, XP, and XPC series of rod and main bearings were developed to meet these challenges through

Today’s sport compact race engines make more power than ever before. Yesterday’s engine bearings’ load capacity no longer works for today’s sport compact race engines. Tomorrow’s engines will be even more powerful.

King bearings meet these demands with higher performance benchmarks, advanced materials and unique geometrical features.
King Racing’s SV, GPC, XP, and XPC series of rod and main bearings were developed to meet these challenges through technologically advanced geometrical features and a unique metal structures. Together, they drive the industry to a higher level of durability, performance and expectation.

pMax Black is a unique tri-metal structure the has been developed to meet the ongoing demand for bearings with increased load capacity. As engines evolve and gain more power, engine bearings have to be able to handle the extra loading.

pMax Black consists of three layers that come together to form the strongest tri-metal bearing in the industry with load capacity exceeding the competition by as much as 24%. King Racing’s new hardening technology modifies the overlay molecular structure and creates a fatigue resisting shield.

The intermediate layer of a typical race bearing contains 2-3% tin, with hardness values of 90-95 HV. For a superior pMax Black intermediate layer, we increased the tin content to 4.5%, making it 22% harder (115 HV), with a load carrying capacity of 17,000 psi.

The overlay of a typical high performance bearing consists of a leaded alloy that contains 2-3% copper. It achieves a hardness level of 11 – 14 HV, and a maximum load capacity of 8,000-8,500 psi. King’s pMaxBlack overlay is significantly stronger than conventional overlays due to its 5% copper content and an innovative nano-scaled hardening process.

The pMaxBlack overlay contains 5% copper. It is further strengthened by a proprietary nano-scaled hardening process that modifies the molecular structure and creates a black fatigue-resistant shield. The outcome is a significant 29% increase in overlay hardness (18.1HV) and overall 24% increase in load capacity (10,200 psi).

SecureBond – Maximum tri-metal structural integrity

High loads and high RPM’s create critical stresses that travel through the multi-layer construction of a tri-metal race bearing. SecureBond is a micro-etch surface preparation process that strengthens the tri-metal structural integrity. SecureBond reduces the likelihood of catastrophic failure due to delamination of one layer from the other under extreme load conditions or metal–to-metal contact.

 



Check your bearing size using our fitment calculator here
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 23608935011

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G
Lexington, US
★★★★★ 5
very nice
Color: Light Champagne, Size: 6
The white I ordered is ivory not white but perfect , true to size . Very Beautiful . Not really Lenin it’s polyester but very pretty.
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Reviewed in the United States on April 18, 2026
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Tuna
Birmingham, US
★★★★★ 4
Nice summer suit
Color: Light Green, Size: 10, Color: Light Green, Size: 10
The overall quality is better than I expected. It is polyester and linen blend, seems easy to care. Like the light green color, muted. Sizing is good, size 10 fits well to my more than average weight 9,5 yo. My only complaint is the tie is not matching the suit as it is shown in the picture. Instead they put an ugly/shiny green tie, which we definitely wont use and need to find something else. Also doesnt have the tissel on the jacket. I kinda liked it🙂
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Reviewed in the United States on April 24, 2026
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Terri
San Leandro, US
★★★★★ 2
Linens boys suit
Color: White, Size: 8
Runs big looked nice
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Reviewed in the United States on June 4, 2026
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Amazon Customer
Lexington, US
★★★★★ 5
Perfect
Color: Light Champagne, Size: 7
Fits a little loose; but it will bring a tear to your eye to see your son dressed in this
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Reviewed in the United States on April 15, 2026
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Marlyn Hidalgo
Charlottesville, US
★★★★★ 5
Excelente calidad con el traje
Color: White, Size: 7
Es excelente, a mi hijo le quedó muy bien, la tela de una buena calidad. Lo recomiendo
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Reviewed in the United States on March 22, 2026

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