SKU: 80487054540

King Engine Bearings Main Bearing Set for 1971-1973 GMC Sprint (MB 557XPC 020)

Sale price$152.41 Regular price$169.35
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

King Engine Bearings Main Bearing Set for 1971-1973 GMC Sprint (MB 557XPC 020)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.

King’s new pMaxKote is a nano-composite polymer coating. It is applied over the pMaxBlack overlay at the King factory as part of the bearing manufacturing process. It enhances wear resistance without changing the bearing’s original precision wall thickness dimension.

King’s pMaxKote is a new approach to coated bearings. It has proven to protect bearings during metal-to-metal contact, as well as from the erosive effects of cavitation. It contains ceramic nano-composite particles that function as a fourth layer that provides superior build protection.

pMaxKote enhances the following benefits of King XP race bearings:

  • Superior seizure resistance
  • Superior cavitation resistance
  • Superior wear resistance
  • Superior protection against oil starvation

The intermediate layer of a typical race bearing contains 2-3% tin, with hardness values of 90-95 HV. For a superior pMaxBlack intermediate layer, we increased the tin content to 4.5%, making it 22% harder at 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 pMax Black overlay is significantly stronger than conventional overlays due to its 5% copper content and an innovative nano-scaled hardening process.



Check your bearing size using our fitment calculator here

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 80487054540

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4.1 ★★★★★
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Queen
Phoenix, US
★★★★★ 4
The best frother I ever had
Color: White
I have been using frothers to make a daily matcha latte since 2016 and, since each of them lasted only between 4 to 12 months, I had purchased many of them. This one is absolutely the best one! I bought it in July 2025 and I surely hope this will last more than one year. I will update my review if it stops working too soon. But , for now, it has been great! I totally love the strong, fast engine. It perfectly whips up my matcha latte in just 3-4 seconds! As I use a very tall cup, I never experienced any overflowing of the liquid. It feels heavy and stronger than my previous one, and I like that. The reason I took off one star is because it doesn’t come with a metal stand considering that it is not possible to keep it standing up on the kitchen counter because, on the top, it has a robber cover that it is not flat. I am using an old stand from one of the previous frothers but, as this frother is much heavier, it keeps falling down. It would be nice to have a stand that fits this frother! Other than that, so far, it is the best frother I have ever had!
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Reviewed in the United States on November 14, 2025
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drew13
Birmingham, US
★★★★★ 5
Really powerful, responsive customer support
Color: Blue
Awesome for mixing protein powder into milk, Gatorade powder into water, making salad dressings, basically the kinds of work that would be overkill for an immersion blender. The unit I got started to vibrate like crazy after a few weeks. Contacted support and they said it was likely that the whisk rod was bent and said they'd refund me the cost of a new rod. We'll see if that solves the problem, but overall, I am impressed by their product and aftersales support.
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Reviewed in the United States on May 20, 2026
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Aundrea
Draper, US
★★★★★ 5
powerful, efficient and long lasting
Color: Black
we've had this for a year and half now and it has held up!! we use it daily for coffee drinks. we also use it to mix powdered flavored drinks, when i do that it literally will make the WATER foam! its really powerful. and has definitely been worth the price as its lasted a year and a half.
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Reviewed in the United States on March 29, 2026
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Soan Esteves
Bozeman, US
★★★★★ 5
Great for fast frothing!!!
Color: Black
Very easy to use, the speed is fast enough for that little bit of froth in seconds, good for the price, battery lasts for days,
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Reviewed in the United States on May 13, 2026
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Tonya
West Palm Beach, US
★★★★★ 3
One speed level
Color: Black
The product currently operates at a single speed. While its performance is satisfactory, there is no option to reduce the speed. We kindly request the addition of an additional speed level for this item. 😒
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Reviewed in the United States on March 2, 2026

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