What does the '+0.25' size designation mean for these bearings?

The '+0.25' indicates that these bearings are 0.25mm undersize. This means they are intended for use when the crankshaft journals have been machined down by 0.25mm during an engine rebuild or repair.

What is the difference between the CR4280CP and CR4280XP0.25 bearings?

The CR4280CP is a race bearing using a different material, while the CR4280XP0.25 is from King's XP performance line, featuring their pMax Black tri-metal construction for a balance of performance and durability.

Do these bearings come with installation instructions?

While these bearings are designed as a direct replacement, it is always recommended to refer to the specific service manual for your vehicle's engine for detailed installation procedures and torque specifications.

Specifications

Brand: King Engine Bearings
Part #: CR4280XP0.25
UPC: 611500542152

King Engine Bearings Subaru WRX/STi EJ20/EJ22/EJ25 48mm Rod (Size +0.25) Performance Rod Bearing Set

Name: King Engine Bearings Subaru WRX/STi EJ20/EJ22/EJ25 48mm Rod (Size +0.25) Performance Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-wrx-sti-ej20-ej22-ej25-48mm-rod-t14-4326063
Price: 49.02 USD
Availability: BackOrder

$49.02

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King Engine Bearings Subaru WRX/STi EJ20/EJ22/EJ25 48mm Rod (Size +0.25) Performance Rod Bearing Set. These are the XP series bearings, a popular choice for performance builds.

Key Features

Fits Subaru Baja, Forester, Impreza, Legacy, Outback, and WRX/STI models.
Features King's pMax Black tri-metal material for improved load capacity and wear resistance.
This is a +0.25mm undersize bearing set, intended for use with a crankshaft that has been machined down by 0.25mm.
Designed for Subaru EJ20, EJ22, and EJ25 engine families.
Part of King's XP performance series, a popular choice for performance engine builds.

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About this part

Product Details

These King Engine Bearings CR4280XP0.25 rod bearings feature a pMax Black tri-metal construction, a design often chosen for performance applications. They are specifically sized at +0.25mm, meaning they are 0.25mm undersize, which is important when rebuilding or reconditioning an engine block and crankshaft. This set is designed for Subaru EJ20, EJ22, and EJ25 engines, commonly found in vehicles like the Subaru Impreza, Forester, and Legacy.

The XP series, or 'performance line,' from King Engine Bearings is a well-known option for builders looking for a robust bearing solution. The pMax Black material offers improved load capacity and wear resistance compared to standard bearings, making them a solid choice for engines that see spirited driving or track use. When installing these, ensure your crankshaft journals are properly prepped and within the specified tolerance for the +0.25mm size to ensure optimal performance and longevity.