★★★★★ 1
Don't waste your time
Size: 2-Pack
I did it 2 times back to back didn't do anything. Failed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
WSM Piston Kit Yamaha 75 - 90 Hp 4-Stroke '16-'22 .25mm Over 81.25mm 100-310-04K
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
WSM Piston Kit Yamaha 75 - 90 Hp 4-Stroke '16-'22 .25mm Over 81.25mm 100-310-04KItem#: 100 310 04K Piston Kit Yamaha 75 90 Hp 4 Stroke 16 22 . 25mm Over OEM#: 6FP 11635 01 00 Note: 81. 25mm Brand: WSM FITMENTS: Make Model Year(s) Yamaha 4 Cyl 4 Stroke 75 2017 2022 Yamaha 4 Cyl 4 Stroke 90 2016 2022 Yamaha 4 Cyl Jet 4 Stroke 90 2017 2022 Note: 81mm
Quick Dispatch:
Your WSM Piston Kit Yamaha 75 - 90 Hp 4-Stroke '16-'22 .25mm Over 81.25mm 100-310-04K orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.2 ★★★★★
Based on 2428 reviews
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Product Reviews
★★★★★ 4
Don't buy if your cat is plugged
Size: 2-Pack
The product works just not for long I followed the directions even added 2 it worked good until I filled up the vehicle with fuel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Great Product
Size: 2-Pack
Great product, worked wonders!! I would definitely recommend to others to buy this product!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
★★★★★ 1
Disappointed
Size: Single
It didn’t work as expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 1
Fake
Size: 2-Pack
No good just a lie
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
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