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Wiseco Yamaha YZ 400 77-78/IT 40077-78 3386TD Piston Kit

Marsoni M251S
Sale price$107.67
Pay 4 payments of $26.92 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Wiseco Yamaha YZ 400 77-78/IT 40077-78 3386TD Piston KitClassic Forged 2 stroke pistons are perfect for those looking to rebuild their 2 stroke engine with reliable, high quality components. These pistons cover a wide range of Powersports rebuilds, including vintage motocross models, classic street bikes, and snowmobiles. The forged material improves tensile strength over cast pistons, ensuring refreshed performance on the track or the trail. This Part Fits: Year Make Model Submodel 1977 1978 Yamaha IT400
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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.
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4.4 ★★★★★
Based on 2152 reviews
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David
Lowell, US
★★★★★ 5
Good quality
Size: Medium, Color: Black/Assorted
Comfy and sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2025
B
Verified Purchase
Brooke
Houston, US
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2024
M
Verified Purchase
Maranda
Grantham, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
Jessica Burdett
Massapequa, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025
J
Verified Purchase
john jeffrey elliott
New York, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026

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