VIPER 640 M-9 MAINSAIL
With the same shape and twist profile as the M8, the M9 introduces a high-tech aramid fiber layout inside the laminate film. Aramid is a stronger fiber so not only will this 2019 World Championship winning sail give you an advantage in durability, it will stretch less in big breeze and when you wail on your control lines - making the sail more controllable.
North American | National
North American | National
- Full Battens
- Leech Battens
- Country Code
- Sail Numbers
- Trim Stripes
- Insignia
- Cunningham
- Visibility Window
- Roll Bag
- Mainsail Spreader Tip Patches
POWER UP
VIPER 640 SPEED GUIDE
Dive into the North Sails Viper 640 Speed Guide - your essential companion for mastering speed, tactics, and winning strategies.
Dive into the North Sails Viper 640 Speed Guide - your essential companion for mastering speed, tactics, and winning strategies.
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SAIL FAST
VIPER 640 TUNING GUIDE
The North Sails Viper 640 Tuning Guide is a resource for class sailors aiming to optimize their performance on the racecourse. Packed with expert advice and detailed instructions, this guide covers rig setup, sail trim, and tuning techniques, helping you unlock your Viper's full potential.
The North Sails Viper 640 Tuning Guide is a resource for class sailors aiming to optimize their performance on the racecourse. Packed with expert advice and detailed instructions, this guide covers rig setup, sail trim, and tuning techniques, helping you unlock your Viper's full potential.
VIEW GUIDE
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EARN THE WIN
North Sails wins more races than any other sailmaker because of their relentless commitment to innovation, technology, and performance. With a team of expert designers, engineers, and sailors, North Sails is constantly pushing the boundaries of what is possible in sailing.
North Sails wins more races than any other sailmaker because of their relentless commitment to innovation, technology, and performance. With a team of expert designers, engineers, and sailors, North Sails is constantly pushing the boundaries of what is possible in sailing.
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