Yamaha B7B-116A0-00-00 - 4-Stroke Piston Kit is an accessory kit including piston, ring, circlips, and wrist pin, designed for select Yamaha motorcycle service and maintenance applications.

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Key Features & Benefits

• Genuine Yamaha kit — piston, ring, circlips, and wrist pin included
• High-quality forged aluminum piston construction
• Proven OEM fitment, durability, and reliability
• Restores factory compression and throttle response
• Straightforward drop-in replacement during a top-end rebuild
• Matched components eliminate bore/clearance guesswork

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Fits These Yamaha Models

Yamaha Model	Compatible Years
WR250F	2020-2021
YZ250F	2019-2026
YZ250FX	2020-2021

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Frequently Asked Questions

What is Yamaha part B7B-116A0-00-00?

B7B-116A0-00-00 is the Yamaha 4-Stroke Piston Kit, an accessory kit that includes piston, ring, circlips, and wrist pin for motorcycle maintenance.

What type of Yamaha part is B7B-116A0-00-00?

B7B-116A0-00-00 is categorized as an accessory and a service part designed for use in select Yamaha motorcycles.

Which Yamaha models fit B7B-116A0-00-00?

This piston kit fits Yamaha WR250F, WR450F, YZ250F, YZ250FX, YZ450F, and YZ450FX models from years 2010 through 2026. Please confirm your exact model and year before ordering.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.