KING ENGINE BEARINGS MB5721XP Race Stdx Pulsar 611500553417 N14

( Brand: King Engine Bearings ), ( Engine Codes: Gtir Sr20det ), ( Vehicle Make: Nissan ), ( Manufacturer Part Number: MB5721XP ), ( UPC: 611500553417 )

Review KING ENGINE BEARINGS Race Stdx Main Pulsar Gti r N14 fits SR20DET XP HX GTI 1990–1994

Introducing the King Engine Bearings MB5721XP Race XP Standard HX set, specifically designed for the Nissan Pulsar GTI-R models from 1990 to 1994, as well as the SR20DET engine found in these vehicles. These bearings are an excellent upgrade for high-performance applications, delivering superior strength and durability.

The MB5721XP Race XP Standard HX set includes four crankshaft bearings, two main bearings, and two connecting rod bearings. Each bearing is meticulously engineered using King's proprietary micro-alloy steel, which offers increased strength and reduced weight compared to standard bearings. This results in enhanced load capacity and improved engine response.

The Race XP Standard HX bearings feature King's patented XP (Extreme Press) technology, which provides a press-fit installation process. This technology ensures a precise fit and eliminates the need for bearing shells, making installation simpler and more efficient. Additionally, the XP technology allows for a more uniform film of oil to coat the bearing surfaces, resulting in improved lubrication and reduced friction.

King's MB5721XP Race XP Standard HX bearings are also designed with a reduced clearance, offering improved engine stability and rigidity. This makes them an ideal choice for high-performance applications, where increased power outputs and higher RPMs can put additional stress on the engine bearings.

The Standard HX bearings also incorporate King's patented HX (High Load) technology, which allows for higher radial and axial loads compared to standard bearings. This technology makes these bearings suitable for engines that see heavy use or high power outputs, ensuring they can withstand the increased loads without failure.

In summary, the King Engine Bearings MB5721XP Race XP Standard HX set is a high-performance upgrade for the Nissan Pulsar GTI-R and SR20DET engines. Engineered with King's proprietary micro-alloy steel, XP technology, and HX technology, these bearings offer increased strength, reduced weight, improved lubrication, and enhanced load capacity. With a precise fit, simplified installation process, and improved engine stability, the MB5721XP Race XP Standard HX set is an essential upgrade for any enthusiast looking to maximize the performance of their engine.

Pros and Cons of Buying King Engine Bearings MB5721XP for Pulsar GTI-R N14 SR20DET (1990-1994)

a. High-Performance: King Engine Bearings MB5721XP are designed for racing applications, ensuring improved performance and durability in high-stress conditions.

b. Pre-Lubed: These bearings come pre-lubed with high-performance synthetic grease, reducing the need for additional labor during installation.

c. Reduced Wear: The use of high-quality materials and manufacturing processes results in reduced wear and longer lifespan compared to OEM bearings.

d. Enhanced Engine Balance: King bearings are known for their precision and ability to enhance engine balance, leading to a smoother running engine.

a. Cost: King Engine Bearings MB5721XP are more expensive than OEM bearings, making them a significant investment for some enthusiasts.

b. Not Suitable for Daily Driving: These high-performance bearings are designed for racing applications and may not be the best choice for daily driving due to their increased noise levels and potential for premature wear.

If you are looking to build a high-performance Pulsar GTI-R or N14 SR20DET for track use, the King Engine Bearings MB5721XP are an excellent choice due to their superior materials, performance, and durability. However, if you primarily use your vehicle for daily driving or commuting, the higher cost and potential noise levels may not be worth the investment.

For racing applications, King Engine Bearings MB5721XP are a strong recommendation. For daily driving or commuting, it may be more cost-effective to consider OEM or aftermarket performance bearings that offer a good balance between cost and performance. Always consult with a trusted mechanic or engineer for the best choice based on your specific application and driving conditions.

Details:

Bearing Types. TW - Thrust washer set. HIGHER LOAD CAPACITY, The only bearing with load capacity of 17,000psi in the intermediate and 10,200psi overlay, BETTER FATIGUE RESISTANCE, that goes through a hardening process creating black fatigue resistance shield, which makes overlay 24% stronger than any other 11.5hv vs 14.5hv, MORE ACCURACY, Bearings wall thickness variation .0001 as standard comparison to 0.00025. Useful Links.

Dimension / Under Size King Bearings Race XP STDX Main HX For Pulsar GTI-R 90-94 N14 SR20DET. STD for Standard, X equals .001 extra Clearance. N - Narrowed.

Race Type: Circle track, Off-road, off-shore, others that require steel crankshafts. XP - Teri-metal copper lead. Metal Structure: Teri-metal copper lead. Material construction.

Engine requirements: High load - Long Duration. MB - Main bearing set. CR - Con Rod bearing set. CS - Camshaft bearing set.

Bearing size inches. Car Make: Nissan, model: Pulsar AWD, Engine: GTiR SR20DET, Thickness: STDX, Manufacturer Product Specifications: NISSAN SR20DET GTiR, 16v. HP - Bi-metal aluminum Silicon Alloy.

Bearing Features.

part #: mb5721xp prices

• $99.90-$179.89

specifications engibearing:

• for models: Sr20det, Xp, Hx, Gti
• for years: 1990-1994
• brand: King Engine Bearings
• engine codes: Gtir Sr20det
• vehicle make: Nissan
• manufacturer part number: MB5721XP
• upc: 611500553417

seller engibearing:

• rating: 99.9%
• # reviews: 41122
• city: Sanford, Florida

payments engibearing:

• credit card: Diners-club
• other
• wallet: Apple-pay

general engibearing:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: New

shipping engibearing:

• class: Standard, One-day
• transit: 3-7 Days
• carrier: UPS
• cost: $0.00
• type: Calculated
• service: UPS Ground, UPS Next Day Air Saver

returns engibearing:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer engibearing:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: January 7, 2026
• availability: In Stock

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