What is the main function of main bearings?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly while handling the forces generated during combustion, ensuring efficient engine operation.

Why are these bearings made by OEM suppliers important?

Using bearings made by the same suppliers that produce parts for original equipment manufacturers means you are getting components that meet strict quality and performance standards. This ensures they function correctly and reliably within your engine.

What does the '30 x 72 x 18mm' measurement refer to?

These measurements refer to the dimensions of the main bearing. The first number (30mm) is the inner diameter, the second (72mm) is the outer diameter, and the third (18mm) is the width of the bearing.

Wiseco Main Bearing Kit (2) 30 x 72 x 18mm

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Specifications

Brand: Wiseco
Part #: BK5048
UPC: 193564104243

Wiseco Main Bearing Kit (2) 30 x 72 x 18mm

Name: Wiseco Main Bearing Kit (2) 30 x 72 x 18mm
Brand: Wiseco
Price: 137.34 USD
Availability: InStock

$137.34

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Wiseco Main Bearing Kit BK5048. Manufactured by OEM suppliers for reliable engine service.

Key Features

Fits a range of Suzuki and Kawasaki models including the DR-Z400 series and KFX400.
Manufactured by the same suppliers to OEMs, including leading Japanese manufacturers.
Precision machined and finished with high-quality materials.
Inspected for accuracy, function, and cleanliness for reliable engine service.
Includes two main bearings, each measuring 30mm x 72mm x 18mm.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is a Wiseco Main Bearing Kit, part number BK5048. These bearings are crucial for the proper function of your engine's crankshaft, ensuring it spins smoothly within the block. They are manufactured by many of the same suppliers that produce parts for original equipment manufacturers, including leading Japanese companies, so you know you're getting well-built components.

Each bearing in this kit is precision machined and inspected for accuracy, function, and cleanliness. This attention to detail helps ensure efficient and reliable service for your engine. The kit includes two main bearings, each measuring 30mm x 72mm x 18mm, designed to fit a range of Suzuki and Kawasaki models like the DR-Z400 series and KFX400.