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Mainsails

Viper 640 M-8 Mainsail

2019 Worlds!

The new M-8 mainsail for the Viper 640 features the very same design and shape of the world winning M-7 mainsail. Because North Sails is always improving and seeking for better products, our sail designers made a recommendation for a cloth switch to Xi-18 which will hold the sail shape longer, with a substantial durability improvement for an overall better...

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Headsails

Viper 640 J-5 Aramid Jib

2019 Worlds!

The new J-5 jib for the Viper 640 features the same proven winning shape as the J-4 jib. The new J-5 is made out of North Sails exclusive reinforced Xi14 Aramid laminate produced using the world’s most advanced sailcloth laminator and North's unique eXact™ process. The result is a high performance cloth with ultimate durability. North NPL Laminates

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Spinnakers

Viper 640 V-2 Asymmetric Spinnaker

2019 & 2018 Worlds!

The North Viper 640 spinnaker reflects the knowledge we've gained by designing winning sails for a variety of sport boats. Our sail is sized to be class maximum and twists and rotates well, so you can sail lower angles while going the same speed or faster.

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Viper 640 Class Experts

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Jackson Benvenutti

New Orleans, Louisiana
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Zeke Horowitz

Annapolis, Maryland
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Ched Proctor

Milford, Connecticut
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Mark Bradford

Brisbane, Australia
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Charlie Cumbley

Gosport, United Kingdom
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John Bowden

Charleston, South Carolina
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