Why is a top end bearing important for a two-stroke engine?

The top end bearing is crucial for the smooth rotation of the crankshaft and connecting rod assembly within the engine's top end. It helps reduce friction and wear in a high-stress area, which is vital for the performance and longevity of your two-stroke engine.

What does 'top end rebuild' mean for a two-stroke?

A top end rebuild typically involves replacing components like the piston, piston rings, and cylinder. This bearing is a key part of that process, ensuring the crankshaft assembly is properly supported and can rotate freely.

Does this bearing come with any hardware?

This product is for the top end bearing only. Any necessary installation hardware, such as circlips or seals, would typically need to be sourced separately if not included with other components of your rebuild kit.

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Specifications

Brand: Wiseco
Part #: B1001
UPC: 193564104397

Wiseco 15 x 19 x 17.3mm Top End Bearing

Name: Wiseco 15 x 19 x 17.3mm Top End Bearing
Brand: Wiseco
SKU: wiseco-wiseco-15-x-19-x-17-3mm-top-end-bearing-t14-660110
Price: 30.22 USD
Availability: BackOrder

$30.22

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Wiseco 15x19x17.3mm Top End Bearing. Essential for a solid two-stroke top-end rebuild.

Key Features

Fits 7+ vehicle makes and models including Honda CR125R, Yamaha YZ125, and Gas Gas EC 125.
Measures 15mm x 19mm x 17.3mm.
Manufactured by leading bearing suppliers.
Inspected for quality by Wiseco.
Essential for two-stroke top-end rebuilds.

⚠️ 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

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

With dimensions of 15mm x 19mm x 17.3mm, this top end bearing from Wiseco is a critical component for any two-stroke engine rebuild. As a well-known maker of forged pistons, Wiseco understands how important the right bearing is for the longevity and performance of your engine's top end. This bearing is manufactured by leading bearing suppliers and then inspected to ensure it meets Wiseco's standards.

This bearing is a must-have when you're rebuilding the top end of your two-stroke motorcycle. It's designed to handle the specific demands of this high-performance area of the engine. Proper installation of this bearing is key to ensuring smooth operation and preventing premature wear on other top-end components.

This part fits a range of popular dirt bikes, including models like the Honda CR125R, Yamaha YZ125, and Gas Gas EC 125. Make sure to check the full fitment list to confirm compatibility with your specific machine.