What does the .025 undersize mean for my engine build?

The .025 undersize specification means these bearings are designed for a crankshaft that has been machined down by 0.025 inches. This is typically done during an engine rebuild to correct wear or to achieve specific clearances.

What is the pmax black racing line coating?

The pmax black coating is an advanced surface treatment applied by King Engine Bearings. It's designed to reduce friction between the bearing and the crankshaft, and it also helps to improve oil distribution within the bearing surface for better lubrication.

Are these bearings suitable for a daily driver?

While these bearings are well-built and feature performance coatings, they are specifically part of King's 'racing line.' They are best suited for performance-oriented builds and engines that experience higher loads and stresses, such as those used in racing or track applications.

Specifications

Brand: King Engine Bearings
Part #: MB7008XPC0.25
UPC: 611500613234

King Engine Bearings Nissan 2.5L RB25DET 24V (Size .025) Coated Performance Main Bearing Set

Name: King Engine Bearings Nissan 2.5L RB25DET 24V (Size .025) Coated Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-2-5l-rb25det-24v-size-025-coate-t14-364874
Price: 267.28 USD
Availability: BackOrder

$267.28

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King Engine Bearings Nissan 2.5L RB25DET 24V (.025 undersize) Coated Performance Main Bearing Set. For high-performance RB25DET engines.

Key Features

Fits Nissan RB25DET 2.5L 24V engines.
Main bearing set is .025 inch undersize.
Features King's pmax black racing line coating for improved friction reduction and oil flow.
Designed for high-performance and racing applications.
Well-built construction to support the crankshaft under load.

This main bearing set is designed for Nissan RB25DET 2.5L 24V engines. It is an undersize set, intended for use with a crankshaft machined to .025 inch undersize.

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About this part

Product Details

The pmax black racing line coating on these King Engine Bearings main bearings is a key detail for serious RB25DET builds. This advanced coating helps reduce friction and improve oil flow, which is critical when you're pushing your 2.5L 24-valve Nissan engine hard. These bearings are specifically sized at .025 inch undersize, meaning they're intended for crankshafts that have been machined to match this specification during an engine rebuild.

King Engine Bearings is a well-known name in performance engine components, and this set is built to handle the demands of racing applications. The construction is solid, designed to maintain proper oil clearance and support the crankshaft under high loads. If you're rebuilding the bottom end of your RB25DET, ensuring you have well-built main bearings like these is essential for engine longevity and performance.

When installing these bearings, remember they are an undersize set, so ensure your crankshaft has been properly machined and measured to the .025 inch undersize specification. Proper installation is key to getting the most out of these performance bearings.