What does the +0.25mm size mean for these bearings?

The +0.25mm designation indicates that these bearings are slightly larger than standard size. This is necessary when the engine's crankshaft has been machined down by 0.25mm to remove imperfections or wear. Using the correct undersize bearing ensures proper oil clearance and a snug fit.

What is the p-Max Black coating for?

The p-Max Black coating is a specialized material applied to these performance bearings. It's designed to reduce friction between the bearing and the crankshaft journal, which also helps to minimize wear, especially under the high loads and RPMs found in performance racing engines.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings to rebuild the bottom end of your Nissan SR20DET engine. You will receive the complete set required for the crankshaft installation.

Specifications

Brand: King Engine Bearings
Part #: MB5721XP0.25
UPC: 611500553073

King Engine Bearings Nissan SR20DET (GTiR) 16V - (Size +0.25) Performance Main Bearing Set

Name: King Engine Bearings Nissan SR20DET (GTiR) 16V - (Size +0.25) Performance Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-sr20det-gtir-16v-size-0-25-perf-t14-4326054
Price: 110.69 USD
Availability: BackOrder

$110.69

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King Engine Bearings Nissan SR20DET (GTiR) 16V - (Size +0.25) Performance Main Bearing Set. For rebuilding your SR20DET engine.

Key Features

Main bearing set for Nissan SR20DET (GTiR) 16V engines.
This set is +0.25mm undersize for use with a machined crankshaft.
Features King's p-Max Black coating for reduced friction and improved durability in racing applications.
Designed to provide proper oil clearance and support for the crankshaft.

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About this part

Product Details

When you're rebuilding the bottom end of your Nissan SR20DET (GTiR) 16V engine, getting the main bearings right is crucial for long-term health and performance. This set from King Engine Bearings is specifically designed for that task, offering a +0.25mm undersize to help you achieve proper clearances on a machined crankshaft.

King's XP series bearings feature their p-Max Black coating, a racing-focused material that helps reduce friction and wear, especially under high-load conditions common in performance SR20DET builds. This coating is well-known for its durability and ability to handle the stresses of a performance engine. The bearings are well-built to ensure they fit right and perform reliably, providing a solid foundation for your engine build.

This set is for the main bearings, which support the crankshaft. Make sure you have the correct undersize for your specific crankshaft machining. If you're unsure about the required size or installation process, it's always best to consult your engine builder or a trusted mechanic.