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King Engine Bearings

King Racing - XP Series K-Series (Except A3) Performance Rod Bearing Set

King Racing - XP Series K-Series (Except A3) Performance Rod Bearing Set


Category: Bearings
Regular price $80.00
Regular price Sale price $80.00
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Bearing Type

One often overlooked part when building an engine is the bearings. Getting a quality set of bearings can directly determine the longevity of your engine.    ENGINE SPECIFICATIONS: K20A2 K20Z1 K20Z3 K24A2 HIGHER LOAD CAPACITYThe only bearing with load capacity of 17,000psi in the intermediate and 10,200psi in the overlay BETTER FATIGUE RESISTANCEThe only bearing that goes through a hardening process creating a black fatigue resistance shield, which makes the overlay 24% stronger than any other bearing (11.5hv vs 14.5hv) MORE ACCURACYThe only bearings with wall thickness variation of ±.0001” as a standard in comparison to ±0.00025”.  MORE CONSISTENCYfrom bearing to bearing, requiring less adjustment during assembly ONE SET FITMENTThe only bearings that don’t require you to buy multiple sets to achieve desired oil clearance. King’s Unique Technologies pMAX Black™ – This unique tri-metal bearing structure was developed to meet the ongoing demand for increased engine bearing load capacity. The intermediate layer uses a copper based alloy with 4.5% tin for added strength that is the strongest in the industry, at 115 HV. This gives the bearing a load capacity of 17,000 psi in the intermediate! The overlay is also 24% stronger because of a 5% copper alloy with a fatigue resistance of 10,200 psi, 17% more than a standard bearing. King’s SecureBond™ etching process also improves the multi-layer adhesion and structural integrity of the bearing. U-Groove™ – By using a 90° groove as opposed to a chamfered groove, the effective surface area of the bearing is increased. That in turn, increases the bearing load capacity and gives a better load distribution across the surface of the bearing. Bull’s Eye Tolerance™ – King’s standard for bearing thickness consistency has set new standards in the industry.  With King bearings, there is no need to purchase multiple sets of bearings to get the right clearance, no need to grind cranks, and no need to adjust housing diameter. ElliptiX™ – This newly designed oil slot improves oil ingress without affecting the bearing’s surface or compromising the load capacity. RadiaLock™ – To prevent spun bearings, King has developed a unique process to customize each bearing’s crush height to meet its specific performance demands. EccentriX™ – By using elasto-hydrodynamic analysis, an optimized eccentricity value for each bearing is reached and the bearing is custom designed using this value to meet specific performance requirements. This process allows a more stable hydrodynamic lubrication regime is reached. With XP series bearings now available for popular sport compact engines, there’s no reason to look elsewhere when building a performance engine. Bearing Types:MB - Main bearing setCR - Con Rod bearing setCS - Camshaft bearing setTW - Thrust washer set Material Construction:HP - Bi-metal Aluminum Silicon AlloyXP - Tri-metal Copper Lead Bearing Features:N - NarrowedD - Doweled Honda Available items: King Number ACL  Ref Description CR 439XP 11-1946H HONDA 4, B18A1/B18B1 CR 439XP.025 4B1946H-.025 HONDA 4,   B18A1/B18B1 CR 439XP0.25 4B1946H-.25 HONDA 4,   B18A1/B18B1 CR 439XPSTDX 4B1946HX-STD HONDA 4,   B18A1/B18B1 CR4033XP 4B1912H-STD HONDA F20C, F22C, B20, H22   16v CR4033XP.025 4B1912H-.025 HONDA   F20C, F22C, B20, H22 16v CR4033XP0.25 4B1912H-.25 HONDA   F20C, F22C, B20, H22 16v CR4033XPSTDX 4B1912HX-STD HONDA   F20C, F22C, B20, H22 16v CR4046XP 4B1956H-STD HONDA B20B4, B20Z2, D16   series, ZC, 16v CR4046XP   STDX 4B1956HX-STD HONDA   B20B4, B20Z2, D16 series, ZC, 16v CR4046XP.025 4B1956H-.025 HONDA   B20B4, B20Z2, D16 series, ZC, 16v CR4046XP0.25 4B1956H-.25 HONDA   B20B4, B20Z2, D16 series, ZC, 16v CR4287XP 4B1925H-STD HONDA B18C1, B18C5, 16v CR4287XP.025 4B1925H-.025 HONDA   B18C1, B18C5, 16v CR4287XP0.25 4B1925H-.25 HONDA   B18C1, B18C5, 16v CR4287XPSTDX 4B1925HX-STD HONDA   B18C1, B18C5, 16v CR4541XP 4B1906H-STD HONDA F23A, F23Z, K20A3,   16v CR4541XP   STDX 4B1906HX-STD HONDA   F23A, F23Z, K20A3, 16v CR4541XP.025 4B1906H-.025 HONDA   F23A, F23Z, K20A3, 16v CR4541XP0.25 4B1906H-.25 HONDA   F23A, F23Z, K20A3, 16v CR4541XP0.5 4B1906H-.50 HONDA   F23A, F23Z, K20A3, 16v CR4542XP 4B1972H HONDA   K-Series (except A3), 16v 2.0L, 2.3L, 2.4L CR4542XP   STDX 4B1972HX-STD HONDA   K-Series (except A3), 16v 2.0L, 2.3L, 2.4L CR4542XP.025 4B1972H-.025 HONDA   K-Series (except A3), 16v 2.0L, 2.3L, 2.4L CR4542XP0.25 4B1972H-.25 HONDA   K-Series (except A3), 16v 2.0L, 2.3L, 2.4L CR4542XP0.5 — HONDA   K-Series (except A3), 16v 2.0L, 2.3L, 2.4L MB5259XP 5M1959H HONDA A-series, B-series,   K-series MB5259XP.025 5M1959H-.025 HONDA   A-series, B-series, K-series MB5259XP0.25 5M1959H-.25 HONDA   A-series, B-series, K-series MB5259XP0.5 — HONDA   A-series, B-series, K-series MB5259XPSTDX 5M1959HX-STD HONDA   A-series, B-series, K-series MB5568XP 5M1957H-STD HONDA D-series, F23A,   F23Z, 16v MB5568XP   STDX 5M1957HX-STD HONDA   D-series, F23A, F23Z, 16v MB5568XP.025 5M1957H-.025 HONDA   D-series, F23A, F23Z, 16v MB5568XP0.25 5M1957H-.25 HONDA   D-series, F23A, F23Z, 16v MB5673XP 5M1913H-STD HONDA F20C, F22C, 16v MB5673XP.025 5M1913H-.025 HONDA   F20C, F22C, 16v MB5673XP0.25 5M1913H-.25 HONDA   F20C, F22C, 16v MB5673XPSTDX 5M1913HX-STD HONDA   F20C, F22C, 16v TW 140HP 1T1957 HONDA B18A/21A/D16A/ZC TW 140HP0.25 — HONDA   B18A/21A/D16A/ZC

Shipping & Delivery

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations. For international orders, please Contact Us. If you select US shipping rates and are shipping internationally, please be advised you will be contacted to compensate the difference in shipping fees.

Processing takes about 3 to 5 business days before your order ships. We do not process or ship orders on weekends. If you order an item that's on backorder, we will reach out with an estimated arrival time. If you have any questions about shipping make sure to email us at or call our reps today at 732-638-5268.

If by any chance, your package that has been delivered by the carrier is lost/stolen, YOU (THE BUYER) are responsible for working with the carrier and us, Tri-State Motorsports to recover your package. You must contact us and the shipping company within 48 hours of delivery for lost/damage claims. You are covered by the basic insurance amount APPROVED by the shipping center. We DO NOT refund or reship product for claims that are denied by the shipping company.


What is Route and Green Package Protection?

Route's Green Package Protection is a package projection solution that helps you cover your order in the event that your order gets lost, stolen, or damaged while in transit while also protecting the planet. We know it is frustrating to have something happen to your order, so we've partnered with Route to offer added assurance that you're supported, no matter what. Green Package Protection can be added during checkout.

Every time you add Green Package Protection to your order, Route donates to support an agroforestry initiative that removes COfrom the air and promotes a flourshing ecosystem.

You can also utilize the Route App to visually track all of your online orders in one place and easily file a claim with their team. Whether you're tracking via the Route App or online, Route's real-time shipping updates keep you in the loop throughout every part of your delivery. Haven't downloaded the app yet? Download here.

Purchased Route's Green Package Protection and looking to file a shipping issue online? File Here.

How Does Route Work?

If your Route-protected order ends up lost, damaged, or stolen, Route's expert support team helps ensure that your order gets replaced or refunded as preferred. Claims will be reviewed for approval within 1-2 business days form filing.

Need to file a claim? File Here.

How Does Route Process Refunds or Reorders?

Refunds: When refunding an item, Route covers the subtotal, shipping, and taxes.

In both cases, the Route Premium cost will not be refunded.

Reorders: Route will reorder the items, depending on in-stock availability. Unavailable items will be refunded. Route will cover the cost of any reorders including shipping, taxes, and Route Shipping Protection.

When Should I File a Claim?

Stolen (or any package that has been marked as delivered but your customer cannot locate)

  • Your customers have up to 30 days from when the package was marked as delivered to file a claim. Claims will not be approved before 5 days after the package has been marked as delivered giving the carrier time to "actually" drop off the package or for neighbors to return it in the case that it was delivered to the wrong address.

Stuck in Transit (Lost)

  • Your customers have up to 30 days to file a claim.
  • Domestic packages are not considered lost until after the 7th day without a tracking update.
  • International packages are not considered lost until after the 20th day without a tracking update.


  • Your customers have up to 30 days to file a claim after the package has been marked as delivered.
  • For damage claims, we do require photo evidence of damage so we can verify that the product was actually damaged.

All of Route's policies are listed here.

What if My Order Never Arrives, Is Stolen, or Arrives Damaged?

Route definitely helps cover these instances!

To protect your order against loss, theft, or damage add Green Package Protection at checkout.

If your order has not arrived, please file a claim with Route here. For damaged orders, please take photos of the item and the packaging it arrived in to include in your claim when filing.

If your order has defects or you suspect it was damaged during manufacturing, please reach out to use and we will be happy to work with you to remedy the situation.

How Do I File a Claim for my Lost, Damaged, or Stolen Order?

If you insured your order with Route at checkout, you will receive a confirmation email from Route with a link to file a shipping issue.

You can also file a shipping issue on Route's app or via the web here. To file a claim, you will need your store order number OR Route ID number and the email address that was attached to the order.

Haven't downloaded the app yet? Download here.

What are Route's Terms and Conditions?

Route's terms and conditions are listed here.

Is Route a Licensed Insurance Company?

Yes, Route is a licensed insurance company with SEG Insurance Ltd. as its partner.


When will my product ship out?

Processing takes about 3 to 5 days before your order ships. Some orders may take longer than usual to process and ship. If you order an item that's on backorder, we will reach out with an estimated arrival time. Refunds are subject to a 20% restocking fee. Cancellations are subject to 10% cancellation/processing fee under no exceptions.

What's the Warranty on our products?

Unless the product is manufactured by Tri-State Motorsports or TSM Race, ALL Warranties go through the Manufacturer directly. Please visit their official website and get in contact with them in regards to your warranty. We will supply you with any invoice or tracking information the manufacturer asks you for. We also offer Route Protection shipping insurance.

Do you offer any promotions?

One of our major promotions is the TSM Bucks Loyalty Program. You will earn 1 TSM point for every dollar you spend with us. These points can be redeemed for rewards when you reach certain thresholds. 

TSM Bucks Info

If you subscribe to marketing emails, you will be given a discount code for 5% off your order that you can use at any time. Our Instagram page also has a variety of weekly promotions in our stories and posts. Some restrictions may apply depending on MAP policies.

What payment methods are accepted?

Tri-State Motorsports accepts American Express, Discover, Mastercard, and Visa. You can also pay over time with Affirm and Klarna. Express checkout methods include:

  • Apple Pay
  • Google Pay
  • Meta Pay
  • PayPal
  • Shop Pay
  • Venmo

How can I finance my purchase with Affirm?

Learn More On Affirm

How can I finance my purchase with Klarna?

Learn More On Klarna

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