What does the '+0.25mm' size indicate?

The '+0.25mm' indicates that this bearing set is designed for a crankshaft that has been machined down by 0.25mm. This is typically done when the original crankshaft journals have wear and need to be resurfaced to a uniform size.

What is the main function of main bearings?

Main bearings sit between the crankshaft and the engine block, supporting the crankshaft and allowing it to rotate smoothly. They are crucial for maintaining proper oil clearance and reducing friction within the engine.

Are these bearings suitable for a stock crankshaft?

No, this specific bearing set is sized at +0.25mm and is intended for use with a crankshaft that has been machined to that undersize. If your crankshaft is still at its original factory size, you would need a standard size bearing set.

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Specifications

Brand: King Engine Bearings
Part #: MB1335XP0.25-5
UPC: 611500623165

King Engine Bearings Kawasaki ZX-14R (2012-) #2/4 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Kawasaki ZX-14R (2012-) #2/4 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-kawasaki-zx-14r-2012-2-4-size-0-25mm-m-t14-770258
Price: 13.54 USD
Availability: BackOrder

$13.54

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits Kawasaki ZX-14R (2012-).
Main bearing set for crankshaft support.
Size is +0.25mm, for use with a machined crankshaft.
Well-built for engine reliability.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components, and this main bearing set is no exception. This set is specifically for Kawasaki ZX-14R models from 2012 onwards. Main bearings are critical for supporting the crankshaft and ensuring it spins smoothly within the engine block. When rebuilding or repairing your engine, using the right bearings is key to proper oil clearance and long-term reliability.

This particular set is sized at +0.25mm, meaning it's meant for a crankshaft that has been machined to that specific undersize. This is a common practice when an engine's original crankshaft journals have wear and need to be re-machined to a consistent size. King uses advanced materials and manufacturing processes to create bearings that handle the stresses of high-performance engines. They are designed to maintain proper oil film thickness, which is essential for reducing friction and wear.