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VIPER 640 M-8 MAINSAIL

Marsoni M251S
Sale price$1293.50
Pay 4 payments of $323.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
VIPER 640 M-8 MAINSAILThe M8 is an update to our tried and true M7 the winningest Mainsail in class history with Multiple World and Continental Championships. With a proven shape that delivers unparalleled top end speed and a forgiving twist profile, the M8 is built from our proprietary North XI laminate cloth. The forgiving nature of this sail makes it easy to get up to speed and stay there!
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Your VIPER 640 M-8 MAINSAIL 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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You'll receive a tracking link by email once your VIPER 640 M-8 MAINSAIL ships.

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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
4.3 ★★★★★
Based on 1881 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
Great watch
Color: Blue/Blue
Awesome solar watch. Nice not having to bother with batteries
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
R
Verified Purchase
Rick Nelson
Battle Creek, US
★★★★★ 5
Solar powered
Color: Green/Green
Great watch for us older folks. The hands are large enough to see easily and the fact it is solar powered means batteries do not have to be replaced every year or two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
G
Verified Purchase
Gary Burton
Omaha, US
★★★★★ 4
Nice watch
Color: Green/Green
Very happy with my purchase, rated the purchase with 4 stars due to the band being very stiff, holds doesn't line up to fit wrist properly, don't recommend for seniors to purchase, very difficult to put on.
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Reviewed in the United States on January 6, 2026
C
Verified Purchase
Clint Jesus Chavez Vasquez
Belleville, US
★★★★★ 5
Bonito Timex
Color: Green/Green
Bueno, bonito y barato. El envío super rápido, 7 días. Perú 🇵🇪.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
J
Verified Purchase
Jesus F Su
Massapequa, US
★★★★★ 5
It's a Solar timex.
Color: Green/Green
It's Solar. Light weight. Probably won't need a battery change for a long time. Takes a Lickin keeps on tickin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026

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