What does the '30 x 72 x 19mm' measurement refer to?

These measurements refer to the bearing's dimensions. The first number (30mm) is the inner diameter (ID) that fits the crankshaft journal, the second (72mm) is the outer diameter (OD) that fits the engine block, and the third (19mm) is the width of the bearing.

Are these bearings sold individually or as a set?

This product listing is for a single main bearing. When rebuilding an engine, you will typically need multiple main bearings to replace all of them.

What is the benefit of bearings made by OEM suppliers?

Using bearings manufactured by the same suppliers that produce parts for original equipment manufacturers ensures they meet the same high standards for accuracy, function, and cleanliness. This leads to efficient and reliable engine service.

Specifications

Brand: Wiseco
Part #: B5000
UPC: 193564103925

Wiseco 30 x 72 x 19mm Main Bearing

Name: Wiseco 30 x 72 x 19mm Main Bearing
Brand: Wiseco
Price: 49.02 USD
Availability: InStock

$49.02

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Wiseco 30 x 72 x 19mm Main Bearing. Built by OEM suppliers for reliable engine service.

Key Features

Fits a range of motorcycles including Yamaha YZ450F, WR450F, and Suzuki RMZ450.
Measures 30mm ID, 72mm OD, and 19mm width.
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 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

If you're rebuilding the bottom end of your engine, getting the right main bearings is crucial for smooth operation and longevity. This Wiseco main bearing, measuring 30mm ID, 72mm OD, and 19mm width, is designed to fit a range of performance motorcycles like the Yamaha YZ450F, WR450F, and Suzuki RMZ450.

These bearings are made by many of the same suppliers that produce parts for original equipment manufacturers, including leading Japanese companies. Each bearing is carefully inspected for accuracy, proper function, and cleanliness to ensure it performs efficiently and reliably in your engine. The precision machining and finishing with well-built materials mean you can trust these bearings to handle the demands of your engine rebuild.