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

Main bearings support the crankshaft within the engine block. They reduce friction between the rotating crankshaft and the stationary engine block, allowing for smooth operation and preventing excessive wear on these critical components.

Where do these Wiseco bearings come from?

Wiseco sources these bearings from many of the same suppliers that produce bearings for original equipment manufacturers (OEMs), including leading Japanese manufacturers. This ensures a high standard of production and quality.

What does the '30 x 62 x 16mm' measurement refer to?

These measurements refer to the bearing's dimensions. The '30mm' is the inner diameter (ID) where it fits around the crankshaft, '62mm' is the outer diameter (OD) that fits into the engine block, and '16mm' is the width of the bearing.

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

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Specifications

Brand: Wiseco
Part #: BK5039
UPC: 193564104212

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

Name: Wiseco Main Bearing Kit (2) 30 x 62 x 16mm
Brand: Wiseco
Price: 156.97 USD
Availability: InStock

$156.97

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

Wiseco Main Bearing Kit (2) 30 x 62 x 16mm. Manufactured by OEM suppliers for reliable engine service.

Key Features

Fits a wide range of Beta, KTM, Polaris, and Sherco models.
Each bearing measures 30mm ID x 62mm OD x 16mm width.
Manufactured by the same suppliers that produce bearings for OEMs.
Precision machined and finished with high-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, KTM, or Polaris, getting the crankshaft spinning smoothly is key. This Wiseco main bearing kit includes two bearings, each measuring 30mm ID, 62mm OD, and 16mm width, designed to support the crankshaft within the engine block. These bearings are crucial for reducing friction and wear on critical rotating components.

Wiseco sources these bearings from many of the same manufacturers that supply original equipment makers, including leading Japanese companies. Each bearing is precision machined and finished with quality materials, then thoroughly inspected for accuracy, proper function, and cleanliness. This attention to detail ensures efficient and reliable service for your engine rebuild, helping to restore smooth operation and longevity.