What is the main purpose of engine 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 and reliable engine operation.

Are these bearings a direct replacement for my Yamaha vehicle?

Yes, this Wiseco main bearing is designed as a direct replacement for the specified Yamaha models. Always double-check the part number and dimensions against your vehicle's requirements.

What does it mean that these are made by OEM suppliers?

It means that the same factories and manufacturing processes that produce parts for your vehicle's original manufacturer are also used to make these Wiseco bearings. This often results in a well-built part that meets strict quality standards.

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Specifications

Brand: Wiseco
Part #: B5016
UPC: 193564103543

Wiseco 35 x 80 x 21mm Main Bearing

Name: Wiseco 35 x 80 x 21mm Main Bearing
Brand: Wiseco
Price: 34.30 USD
Availability: InStock

$34.30

On Backorder

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

Wiseco 35 x 80 x 21mm Main Bearing. Manufactured by OEM suppliers for reliable engine service.

Key Features

Fits Yamaha YFM660F Grizzly 4x4 (2002-2008), YFM660R Raptor (2001-2005), and YXR66F Rhino models (2005-2007), among others.
Measures 35mm x 80mm x 21mm.
Manufactured by the same suppliers that produce parts for original equipment manufacturers.
Precision machined and finished with quality materials.
Inspected for accuracy, function, and cleanliness to ensure 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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Will this fit your vehicle?

Product Details

When you're rebuilding the bottom end of your engine, getting the main bearings right is crucial for smooth operation and long-term reliability. This Wiseco main bearing, measuring 35mm x 80mm x 21mm, is designed to fit a range of Yamaha off-road vehicles, including models like the Grizzly 660 and Raptor 660.

These bearings are made by many of the same suppliers that provide parts to original equipment manufacturers, including leading Japanese companies. Each bearing is precisely machined and finished using good materials, then inspected for accuracy, proper function, and cleanliness. This attention to detail ensures that the bearing will perform efficiently and reliably in your engine.