New for 2021!
The M-9 mainsail for the Viper 640 class is a new version of the World winning M-8, now made out of Aramid sailcloth. It has proven to really flatten out nicely when pulling on the controls (because it stretches way less than the poly sails). Also, we found that it provided a really nice extra punch downwind, allowing to sail...
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
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.