North Sails Viper 640 M-9 Mainsail

VIPER 640 M-9 MAINSAIL

All-Purpose | Aramid

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.

Championships

North American | National

color: Gray
FIND YOUR LOCAL LOFT
North Sails
ONE DESIGN LAMINATE
North Paneled laminates are woven by North Sails, and are the market’s highest-performance 2D laminate race sailcloth. A proprietary polyester resin system resists heat, water, and UV at a level unmatched by any string sail. Sails cut from NPL are significantly stronger, lower stretch, and lighter than competitor brands.
Standard features
  • 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.

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North Sails

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.

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North Sails

MEET OUR

CLASS EXPERTS

North Sails
UNITED STATES

JACKSON BENVENUTTI

CONTACT
North Sails
UNITED KINGDOM

CHARLIE CUMBLEY

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North Sails
UNITED STATES

AUSTIN POWERS

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North Sails
UNITED STATES

MIKE MARSHALL

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North Sails
AUSTRALIA

JASON ANTILL

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#NSVICTORYLIST

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.

ALL RACE RESULTS

North Sails

SHOP APPAREL

hover | Ocean blue | 27M718_0790_psfront1
hover | Phantom | 27M718_0951_psfront1
Trucker Cap €45,00

Adjustable fit

hover | Fiery red | gp-aero-waterproof-jacket-27m065
1 | Ocean blue | gp-aero-waterproof-jacket-27m065
hover | Phantom | gp-aero-waterproof-jacket-27m065

Pertex®, TW140S™

1 | Ocean blue | gp-waterproof-shorts-27m565
hover | Phantom | gp-waterproof-shorts-27m565

Pertex®, TW140S™

hover | Ocean blue | race-softshell%2B%E2%84%A2-hoody-27m300
hover | Phantom | race-softshell%2B%E2%84%A2-hoody-27m300
Race SoftShell+™ Hoody €90,00€150,00

SoftShell+™, Stretch

With retainer clip

SoftShell+™

SoftShell+™, Stretch

SoftShell+™, Stretch

SoftShell+™

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