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

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate smoothly and with minimal friction, which is essential for the engine to run efficiently and reliably.

Are these bearings a direct replacement for the original equipment manufacturer (OEM) parts?

Yes, these bearings are manufactured by the same suppliers that produce parts for OEMs, including leading Japanese manufacturers. They are inspected for accuracy and function to ensure they meet the requirements for reliable service.

What is included in this main bearing kit?

This kit includes two main bearings, each measuring 30mm ID, 62mm OD, and 16mm width. These are the primary bearings that support the crankshaft.

Wiseco Main Bearing Kit (2) 30 x 62 x 16mm

Specifications

Brand: Wiseco
Part #: BK5067
UPC: 193564104335

Wiseco Main Bearing Kit (2) 30 x 62 x 16mm

Name: Wiseco Main Bearing Kit (2) 30 x 62 x 16mm
Brand: Wiseco
Price: 147.16 USD
Availability: InStock

$147.16

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Wiseco Main Bearing Kit (2) 30 x 62 x 16mm. Main Bearing Kit.

Key Features

Fits multiple Beta, KTM, and Polaris models.
Includes two main bearings, each 30mm x 62mm x 16mm.
Manufactured by OEM suppliers, including leading Japanese manufacturers.
Precision machined and finished with quality materials.
Inspected for accuracy, function, and cleanliness for reliable service.

⚠️ 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

If you're rebuilding the engine in your Beta 400 RR, KTM 450 SMR, or Polaris Outlaw 450 MXR, a solid set of main bearings is crucial for smooth operation. This Wiseco Main Bearing Kit contains two bearings, each measuring 30mm ID, 62mm OD, and 16mm width, designed to ensure the crankshaft spins true and efficiently within the engine block.

These bearings are made by the same suppliers that produce parts for original equipment manufacturers, including leading Japanese companies. Each bearing is precision machined and finished using quality materials, then carefully inspected for accuracy, proper function, and cleanliness. This attention to detail helps ensure reliable service and efficient operation for your engine rebuild.