King Engine Bearings

King XPG Main Bearings | Subaru FA20/FB20 (MB5745XPG)

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$203.99 $271.32Instant Savings of 25% ($67.33)

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King XP-Series Tri-Metal Main Bearing Set

Highly modified FA engines can suffer from issues similar to the EJ series, such as low oil pressure and oil starvation causing premature bearing failure.

After thorough analysis, King determined that a complete redesign of the main bearings would allow for increased oil delivery while reducing leakage. By incorporating exclusive King features like Elliptix™ oil ingress and 360 degree oil grooves, oil starvation is all but eliminated.

Plus, King’s SmartLug™ main bearing design shuts the leakage path and resolves one of the weakest links in a high output FA engine. The result is a more reliable FA engine that can handle the higher loads produced in race winning, championship engines. King’s XPG bearings are the key to a reliable high performance FA engine.

Housing Bore Specs
  • 2.8755
  • 73.037
Crankshaft Undersizes
  • STD
  • STDX
  • .026
  • 0.25
  • 0.50

Please Note: These are not to be used with NON-MACHINED blocks.


  • 2013-2021 Subaru BRZ
  • 2013-2016 Scion FR-S
  • 2013-2017 Toyota FT-86
  • 2015-2017 Subaru WRX

What's in the box?

  • 1 Set of Main Bearings


  • King Limited Warranty

Customer Reviews

Based on 2 reviews
Parker P.
Much Better Tolerances Over OEM

These are much more consistent main bearing versus the Subaru OEM main bearings. In my fa20 cyclinder 3 experienced a bearing fail and caused rod know and glittery oil. These balanced much better than other OEM bearings I’ve used before.

Lowie Devera

This product is really good. I heard a lot of people
said this mod is the best to rebuild your engine. I’ll definitely will buy more parts on this business.