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

The +0.25mm sizing indicates that these bearings are designed for a crankshaft that has been machined down by 0.25mm. This is a common practice during engine overhauls to ensure proper oil clearance when the crankshaft journals are no longer at their original size.

Are these bearings sold individually or as a set?

This product is a set of main bearings, specifically for the #2 and #4 positions on the specified Kawasaki ZX-14R models. It is not a complete set for the entire engine.

What is the primary function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly while maintaining precise oil clearance for lubrication.

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Specifications

Brand: King Engine Bearings
Part #: MB1335XP0.25-2
UPC: 611500623134

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-t14-770255
Price: 13.54 USD
Availability: BackOrder

$13.54

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King Engine Bearings main bearing set for Kawasaki ZX-14R (2012-). Size +0.25mm.

Key Features

Main bearing set for Kawasaki ZX-14R (2012-).
Sized +0.25mm for the #2 and #4 positions.
Supports the crankshaft for smooth operation.
Designed for engine rebuilding and repair applications.

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About this part

Product Details

This is a set of main bearings from King Engine Bearings, specifically sized at +0.25mm for the #2 and #4 positions on Kawasaki ZX-14R motorcycles made from 2012 onwards. Main bearings are crucial components in your engine's bottom end, supporting the crankshaft and ensuring it spins smoothly within the crankcase. When rebuilding or repairing your engine, using correctly sized and well-made bearings is essential for proper oil clearance and long-term reliability.

King Engine Bearings is known for producing solid engine bearings. This set is designed to meet the specific requirements of the ZX-14R engine, providing the correct clearance needed for optimal oil flow and reduced friction. The +0.25mm sizing indicates these are intended for a crankshaft that has been machined to this undersize, a common practice during engine overhauls to restore proper bearing fit.