SKU: 59117437886

King Engine Bearings Connecting Rod Bearing Set for 1984-1987 BMW 325e (CR6640XP)

Sale price$154.03 Regular price$171.15
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Description

King Engine Bearings Connecting Rod Bearing Set for 1984-1987 BMW 325e (CR6640XP)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

 

 

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SKU: 59117437886

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4.8 ★★★★★
Based on 20 reviews
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Verified Purchase
BobbieAnn
New York, US
★★★★★ 5
Wonderful product
Color: Brown, Number of Items: 1, Color: Brown, Number of Items: 1
This chair offers good lumbar support and a well-padded seat. It has a very nice and smooth rocking motion, you can loosen the tight/loose knob for reclining, and it is very comfortable to sit in while working on the computer or relaxing to watch TV. The back of the chair hits just above my neck, so the back of my head rests comfortably on the top of the chair. The color, brown, is exactly what I expected and looks professional. The height adjustment works well, it sits higher than my old chair, and I like that. It seems sturdy for the 300-pound weight recommended. I got it on Prime Day, so it was a good value for the money. It came packed well and quicker than expected. The pictures are a comparison to my 20-year-old office chair. Assembling the chair was easy, however, be sure to attach the bottom part of the chair with the tight/loose knob facing the front of the chair. It's not clearly marked on the instructions. When it came time to put the back of the chair on it would be good to have another person to hold the chair back for you to align the chair arm holes and screw in, then you should be OK but I did discover that if I had attached the arms to the back of the chair first, it would be so much easier to align them for attachment. The wheels glide very easily and will take you across the room after one push. It swivels at 360 degrees easily, almost making me dizzy. I am writing this review the same day I got the chair so I will update if I run into any issues. Otherwise, I recommend this chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2025
M
Verified Purchase
michele
Chelsea, US
★★★★★ 5
So far, so good
Color: Black, Number of Items: 1, Color: Black, Number of Items: 1
When Covid hit early 2020, I was sent home to work remotely for the first time in my working life. However, my old chair that is pictured on the right is about 25 years old and no longer has any butt cushion. It quickly became painful to work in that chair all day. I have since moved to a new state and found a remote job I will be starting soon so I decided it was time to upgrade the chair. This is a decent chair if you are on a budget like I am and you are not hard on your stuff adding premature wear and tear. For me, it has good lumbar support which I needed, and more cush for the tush! I am a proportionate 5'2" female and about 125 to 130 pounds. The seat has just enough room for my butt but I don't think I would recommend this for larger people. I would look into sizing up to the big and tall chair. Take note of the seat and back size to know what would work best for you but this chair feels small yet good sized for me only because I was able to go by the measurements of my old chair. Might even be best for you to go into an office supply store to test out chair sizes for comfort before making a purchase. Sometimes I like to sit criss-cross applesauce and this chair has a very nice and smooth rocking motion after loosening the tight/loose knob for reclining and is so comfortable for me that I may fall asleep on the job and get fired. The back of the chair hits just above my neck so I am able to tilt my head back a bit to let it rest since my upper back and neck sometimes go numb after sitting for too long. Ugh, it's just so much fun getting older!! Assembling the chair was easy until I got to step 4 to put the back of the chair on. If you have another person to hold the chair back for you to align with the chair arm holes and screw in, then you should be OK, but since I had no one to help, I had to take the seat off and lay it down. I still struggled to align the back while the arms were attached to the seat so I removed the arms from the seat and attached them to the chair back and then aligned the seat with the arms and screwed them in. Once done, I inserted the completed assembled seat, chair back, and arm attachments back onto the wheels. The wheels glide very easily and will take you across the room after one push. I am writing this review the same day I got the chair so will update if I run into any issues. Otherwise, I recommend this chair.
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Reviewed in the United States on February 22, 2022
L
Verified Purchase
lisa
Bozeman, US
★★★★★ 4
Comfortable but lack of back support on this chair
Color: Black, Number of Items: 1, Color: Black, Number of Items: 1
I give this chair a 4 star not a 5 star review. Reason for that if you look for the first picture I pst you can see from the back of the chair how it reclines. There is no adjustment to make the back rest come up straight so when your working all day at the desk you is an upright right position. I have to put a pillow behind my back for support cause while working leaning back is uncomfortable and who wants to lean back while working. so there is a lack of back support. .Great gaming chair for that reason. Though I really like the looks and the color of the chair. The material was very soft and the quality was made well. The chair you can make go up or down for the height which is nice. The ability to be able to move the char around while sitting is a plus and the wheels move smooth and with ease. I had to put this together which was simple to do and came with everything I needed when open the box. So before buying if the back support and leaning back isnt an issue for you then this would be the perfect chair for you. Please not the first picture with the darker rug is the chair I got , second picture isnt mine but for a review that their chair was up straight. Isnt the way mine should have come. I didnt questioned or return it because it was so heavy and bulky to take back to a UPS store. I just kept it because everything else was great.
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Reviewed in the United States on January 29, 2026
T
Verified Purchase
Tammy Hood
Belleville, US
★★★★★ 5
Beautiful chair with real leather
Color: Light Brown, Number of Items: 1
BEAUTIFUL CHAIR.... so comfortable and worth the price. Extremely easy to put together!! Highly recommend.
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Reviewed in the United States on June 5, 2026
H
Verified Purchase
Harold
Alexandria, US
★★★★★ 5
Great price and Quality
Color: Khaki, Number of Items: 1
Best money ever spent on an office chair. At the time of purchase, it was less than half the price of local retail stores. Once we received it and put it together, it was top notch. Better than expected. Now time will tell how long it stays that way. Very comfortable, strong material, and easy to adjust.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

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