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Viper 640 Parts

Viper Sailboat Parts, Rigging & Accessories

West Coast Sailing is your source for Viper sailboat parts, rigging and accessories. The Viper 640 is the fast and fun one-design that almost didn't make it. Shortly after being named the 1997 Boat the the Year, the Viper lost its builder and went out of production. The design was so well loved that in 2005, a small group reestablished the class, recruited a new builder, and started a grassroots fleet. 20 hulls quickly grew to over 125. A keelboat in name only, the swift and highly responsive Viper 640 is a great fit for sailors looking for a modern, moderately athletic, and high-performance sportboat. Shop Viper 640 sailboat parts, rigging, and accessories with rigging guides, technical information, extensive selection, and fast shipping to help you get back out on the water.


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  • Harken 22 mm Round Mast Groove Track Endstop Kit

    Harken 22 mm Round Mast Groove Track Endstop Kit

    Harken
    $53.95
    Endstops absorb shock loads and prevent damage to the car. Kits include endstops, Loctite, and 2 slug mounts. ONE DESIGN APPLICATIONS This fitting is commonly used and/or recommended for the following one design sailboat applications: Viper 640 Boom...
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    $53.95
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  • Harken 22 mm Slug-Mount Track

    Harken 22 mm Slug-Mount Track

    Harken
    $120.95
    Track is extruded from high-grade 6061-T6 aluminum and hardcoat-anodized for a hard, long-lasting surface. 3807 track mounts to mast using a unique slug system that allows mast-up installation. ONE DESIGN APPLICATIONS This fitting is commonly used and/or...
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    $120.95
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  • Harken Cam Cleat Micro Carbo w/ Xtreme Angle Fairlead

    Harken Cam Cleat Micro Carbo w/ Xtreme Angle Fairlead

    Harken
    $52.95
    The X-Treme Angle Fairlead allows releasing and recleating at angles up to 90 degrees to the cleat. Kit includes hardcoat-anodized 468 aluminum Micro Cam-Matic and 476 X-treme Angle Fairlead. ONE DESIGN APPLICATIONS This fitting is commonly used and/or...
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    $52.95
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  • Harken 57 mm Carbo Ratchet Cheek Block

    Harken 57 mm Carbo Ratchet Cheek Block

    Harken
    $86.95
    Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. ONE DESIGN APPLICATIONS This fitting is commonly used and/or recommended for the following one design sailboat applications: Viper 640...
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    $86.95
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  • Harken 29 mm Carbo Clew Blocks w/ Ring

    Harken 29 mm Carbo Clew Blocks w/ Ring

    Harken
    $34.95
    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. ONE DESIGN APPLICATIONS This...
    Qty in Cart: 0
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    $34.95
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  • Harken 29 mm 90 Degree Traveler Blocks H353

    Harken 29 mm 90 Degree Traveler Blocks H353

    Harken
    $34.95
    29mm 90 Degree Traveler Blocks from Harken. 29mm Two single blocks at 90 angle for use with traveler applications Made by Harken
    Qty in Cart: 0
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    $34.95
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  • Harken Micro X-Treme Angle Fairlead H476

    Harken Micro X-Treme Angle Fairlead H476

    Harken
    $19.95
    The X-Treme Angle Fairlead allows releasing and recleating at angles up to 90 degrees. Add to a standard Harken cam cleat (not included). ONE DESIGN APPLICATIONS This fitting is commonly used and/or recommended for the following one design sailboat...
    Qty in Cart: 0
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    $19.95
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  • Harken Aluminum Cam Cleat H150

    Harken Aluminum Cam Cleat H150

    Harken
    $42.95
    Harken ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Aluminum Cam-Matics are hardcoat-anodized for high-load, high-wear, continuous adjustment applications. Aluminum construction Works with line diameters...
    Qty in Cart: 0
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    $42.95
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  • Ronstan Medium Cam Cleat (Grey) N

    Ronstan Medium Cam Cleat (Grey)

    Ronstan
    $29.78
    Intensive development efforts have produced this range of cleats that provide unbeatable holding power, yet are designed for easy cleating and releasing of control lines in every application and load condition. Through the use of advanced composites,...
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    $29.78
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  • Harken 29 mm Single Block H340

    Harken 29 mm Single Block H340

    Harken
    $27.95
    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 29 mm / 1 1/8 in...
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    $27.95
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  • Harken 29 mm Stand Up Block H349

    Harken 29 mm Stand Up Block H349

    Harken
    $25.95
    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 29 mm / 1 1/8 in...
    Qty in Cart: 0
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    $25.95
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  • Harken 40 mm Carbo Block H2650

    Harken 40 mm Carbo Block H2650

    Harken
    $28.95
    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 40 mm / 1 9/16 in...
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    $28.95
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  • Harken T2 40 mm Soft Attach Block H2149

    Harken T2 40 mm Soft Attach Block H2149

    Harken
    $41.95
    The high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called for. The T2 can be tied,...
    Qty in Cart: 0
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    $41.95
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  • Ronstan 40 mm Single Loop Top Block

    Ronstan 40 mm Single Loop Top Block

    Ronstan
    $24.55
    40mm ball bearing block from Ronstan in single block with loop top configuration. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing system provides consistent...
    Qty in Cart: 0
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    $24.55
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  • Ronstan 40 mm Single Stand Up Block

    Ronstan 40 mm Single Stand Up Block

    Ronstan
    $40.38
    40mm ball bearing block from Ronstan in single stand up block configuration with a small stainless base and spring. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing...
    Qty in Cart: 0
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    $40.38
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  • Harken 29 mm Double Block H342

    Harken 29 mm Double Block H342

    Harken
    $49.95
    Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 29 mm / 1 1/8 in...
    Qty in Cart: 0
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    $49.95
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Rigging Diagram

Use the diagram below to reference Harken part numbers to appropriate application on your Viper sailboat. Parts recommendations are offered as a guide for common applications.

viper-vang-rigging-img.jpg

Gnav Strut

The Viper cockpit is very clean with a gnav in place of a traditional vang. The new 8:1 Harken gnav replaces the slider system with a captive bearing car designed for compression loads. The Harken IN8418 utility car removes most of the friction to make the system more powerful, reducing the need for a very high purchase, and making it far easier to use under load.

viper-jib-halyard-leads-rigging-img.gif

Jib Halyard Fine-Tune

For cranking up the luff tension in fresh wind, the Viper's jib halyard is deflected through a 8:1 fine-tune. The double-ended system uses Micro Carbo Cams with X-Treme Angle fairleads, making it easy for the forward crew to adjust without leaving the rail.

Jib Leads

The 2:1 ratchet-controlled jib sheet runs through Carbo T2s on the clew to low-profile pinstop cars for trim angle adjustments. In addition to moving the cars forward to round the foot of the jib, Viper sailors can also improve light-air performance by removing the top batten to keep the leech open.

Diagram provided by Harken. West Coast Sailing is an approved seller of Harken sailboat hardware.

Looking for other sailboat parts or gear? We can help!

General Parts & Hardware - We offer a huge selection of General Parts including hardware, blocks, cleats, shackles, accessories and more here.

Line - Great options for halyards, sheets, control lines, and rigging in a wide range of diameters and materials available on our Line page.

Apparel & Accessories - We also offer large range of Apparel and Accessories from all of your favorite sailing brands.

Product Suggestions - If you're looking for a specific part for your Viper 640 sailboat that you cannot find, let us know. We are actively working to expand our one design parts offering and welcome your input for parts you think we should be stocking to make it easier for you to get back out on the water. Submit you idea via our Product Suggestion Form (opens in new tab).

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