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- USA
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
King SI-Series Oversized +0.50mm Main Bearing Set - BMW / N52 / N54 / N55King SI Series bearings are recommended for OE applications. BMW +0. 50mm Main Bearing SetImprove your engine's performance and replace old worn out OEM bearings with these long lasting, high quality Main Crankshaft Bearings by King Engine Bearings. Main crankshaft bearings hold your crankshaft in place, preventing it from being dislodged by forces from the pistons, and instead converting the reciprocating movement into rotation. King Connecting Rod
King SI-Series bearings are recommended for OE applications.
BMW +0.50mm Main Bearing Set
Improve your engine's performance and replace old worn out OEM bearings with these long-lasting, high-quality Main Crankshaft Bearings by King Engine Bearings. Main crankshaft bearings hold your crankshaft in place, preventing it from being dislodged by forces from the pistons, and instead converting the reciprocating movement into rotation. King Connecting Rod Bearing Sets are constructed from various high-quality alloys, crafted carefully by a highly qualified team of professionals who are highly experienced in the Industry.
Features
Only superior materials are used in King's bearings
Innovative production technology ensures a perfect fit
Advanced R&D software and analysis expertise
Crafted by experienced engineers and an advanced technical team
King Engine Bearings was founded in 1960 with one objective: to supply the highest quality bearings available in the marketplace.
By specializing in engine bearings, King has built an extensive product offering that includes a wide range of engine bearings for automobiles, light-duty and heavy-duty trucks, marine, aviation, standby power and many other types of internal combustion engines. Every King bearing utilizes the highest quality materials and the most advanced designs to ensure complete customer satisfaction.
From concept to final product, everything is done under one roof. This allows King to produce bearings more efficiently and with more accuracy in order to keep up with the needs of our customers. During production, all bearings must pass rigorous quality control checkpoints throughout the entire process. This stringent system of multiple quality checks ensures that only the highest quality bearings ever make it into our customers’ hands.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.4 ★★★★★
Based on 215 reviews
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Product Reviews
★★★★★ 4
Work well but run small
Size: 1 pair black L
They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Good socks they work.
Size: 2 pairs black L
I normally wear size 13&half to 14 men's, and these fit me ok. They sit just below the ankle. They can get a little tight for me so you should look out for that if you are on the thicker side. But they work as advertised and help moisturize your feet. I recommend wearing them if you're going to just be hanging around home for a bit in one spot as they can be a little slippery to walk in if you go fast. Would not recommend going up and down stairs.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Good socks
Size: 1 pair black L
Good socks
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Reviewed in the United States on May 6, 2026
★★★★★ 3
REALLY unsafe to walk around in these
Size: 2 pairs black L
They do what they are expected to do, but should only be used if you are stationary. The gel base makes for very unstable footing if walking around
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Reviewed in the United States on May 27, 2026
★★★★★ 5
These work
Size: 2 pairs black L
My husband loves these they help his very dry feet. As others have stated they are extremely difficult to walk in so have to be careful but they do work nicely.
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Reviewed in the United States on March 12, 2026
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