Yamaha 1SM-116A0-10-00 - 4-Stroke Piston Kit is a service part accessory kit that includes piston, ring, circlips, and wrist pin components for select Yamaha motorcycles.

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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	2018-2019
YZ250F	2016-2018
YZ250FX	2017-2019

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Frequently Asked Questions

What is Yamaha part 1SM-116A0-10-00?

1SM-116A0-10-00 is the Yamaha 4-Stroke Piston Kit, an accessory kit including piston, ring, circlips, and wrist pin for selected Yamaha motorcycles.

What type of Yamaha part is 1SM-116A0-10-00?

It is an accessory service part designed for use in maintenance of Yamaha motorcycles.

Which Yamaha models fit 1SM-116A0-10-00?

This kit fits select WR250F, YZ250F, YZ250FX, WR450F, YZ450F, and YZ450FX models from 2010 through 2026. Confirm the exact SKU and model year combination 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.