King Engine Bearings Main Bearing Set (MB7039XPC.026)
SKU: 31965247088

King Engine Bearings Main Bearing Set (MB7039XPC.026)

Sale price$141.62 Regular price$157.35
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Description

King Engine Bearings Main Bearing Set (MB7039XPC.026)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
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 31965247088

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Asiyah
Draper, US
★★★★★ 5
Perfect
Color: Black
The Lamicall Car Headrest Tablet Holder (3-in-1 Extendable) is exactly the adulting hack I didn’t know I needed until now. If you’ve ever tried to hold a tablet for a kid on a long ride and felt your arm turn into jelly, this thing is your escape plan. Setup is painless. It snaps onto the headrest in seconds and stays put like it actually wants to work. No wrestling with screws or an instruction manual written in ancient hieroglyphs. Stability is legit. Once the tablet is locked in, it doesn’t wobble, jiggle, or threaten to fall — even when someone in the backseat is basically auditioning for an earthquake simulation. That peace of mind alone makes this worth it. The 3-in-1 extendable design is slick. Adjust it for different viewing angles and distances so everyone (yes, even the seatmate who insists on leaning sideways) gets a great view. Landscape? Portrait? Gaming? Movie time? Covered. Build quality feels solid and durable, not like something that’ll snap after a few uses. It works with a range of tablet sizes too, so you aren’t limited to one device. Overall, this holder just works exactly how you want it to. Five stars because it’s practical, sturdy, and actually makes life easier — especially when peace in the backseat is on the line.
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Reviewed in the United States on January 10, 2026
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Mariah
West Palm Beach, US
★★★★★ 5
perfect for road trips
Color: Black
my sister lives 3 hours away, and being that i usually travel by myself with 2 small children, it's sometimes hard to keep them entertained for the trip. my husband bought this for me to keep in my car in case i need it and it has absolutely come in handy a few times. it's super sturdy, it fits perfectly behind my seat without taking up too much space or making my daughter feel cramped. it's challenging to use while driving when it's directly behind you but it does swivel close enough that you're able to do some things on the screen. however it does make it SUPER simple when you're in the passenger seat.
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Reviewed in the United States on April 22, 2026
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M. Chevett
Chelsea, US
★★★★★ 5
Used for 3 years, buying again!
Color: Black
Bought 2 of these 3 years ago. One of them just broke (a crucial plastic piece snapped so not fixable). But with the low price and the countless road trips we’ve used these on I feel I’ve gotten my moneys worth. Purchasing again. 5 stars.
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Reviewed in the United States on May 28, 2026
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Emily O
Pawtucket, US
★★★★★ 4
Works ok. But not for thick cases
Color: Black
Works ok so far. Not good for thick tablet cases. Like foam ones or protective ones for kids.
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Reviewed in the United States on May 6, 2026
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Ashley Penland
Alexandria, US
★★★★★ 5
Simple, easy, great!
Color: Black
10 out of 10 would recommend. We used it in our spring break trip and it was great. Held not only our kids iPads but phones as well. It was easy to install, not too expensive and for us it helped prevent car sickness which hits us all sadly. The fit was nice because it was adjustable, and the fact that the kids didn’t have to hold them for as great! This product was seriously the Best purchase I think I’ve done.
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Reviewed in the United States on May 7, 2026

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