SKU: 12677708443

Extendable Gennaker Bowsprit for on-deck installation, ø87 mm aluminium section, Max total length 2270 mm

Sale price$530.15 Regular price$589.06
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

Extendable Gennaker Bowsprit for on-deck installation, ø87 mm aluminium section, Max total length 2270 mmThe main benefits of an extendable gennaker bowsprit: Gives the gennaker more clear air Facilitates rapid gybing Always ready for quick extension Makes for fast and efficient gennaker handling Improves performance when gennaker sailing Can be fitted to most yachts Available in carbon or aluminium Extendable aluminium gennaker bowsprit sold as a kit for deck mounting. Fit the two foldable stainless steel pad eyes to the deck in line with the bow

The main benefits of an extendable gennaker bowsprit:

• Gives the gennaker more clear air  

• Facilitates rapid gybing

• Always ready for quick extension

• Makes for fast and efficient gennaker handling

• Improves performance when gennaker sailing

• Can be fitted to most yachts

• Available in carbon or aluminium

 

Extendable aluminium gennaker bowsprit sold as a kit for deck mounting. Fit the two foldable stainless steel pad eyes to the deck in line with the bow bracket (bracket to be ordered separately) and you will have two attachment points for the inboard (aft) end of the bowsprit. The forward pad eye is used when the bowsprit is pushed out and activated. The aft pad eye is for "stand-by" storage, and if required, the bowsprit can be quickly removed and stowed securely below deck. 

The gennaker tackline runs through the bowsprit, entering and leaving via well rounded holes, and then aft to the cockpit.

Add a D-shackle to the outboard end and it will allow attachment of a top-down gennaker furler. Attach the furler, push out the bowsprit and engage it to the foldable pad eye and you are all set for efficient and fun downwind sailing.

The bow bracket is a stainless ring with a low friction polyamide inner lining through which the bowsprit slides into its “active”  position. It must be fixed to a strong and solid part of the bow as it will handle high load, both vertical and sideways. Four different versions of bow bracket rings are available and which one to use depends on the design of the bow. 

By using our digital calculator you can easily determine which dimension of bowsprit/bow bracket you need for your boat.

https://support.seldenmast.com/en/services/calculators/bowsprit_calculator.html

This is based mainly on the righting moment of your boat, the unsupported length (USL) of the bowsprit and the Distance between supports between the bowbracket and the forward pad eye (DBS). 

Important - this product is designed and dimensioned primary for gennakers/asymmetric spinnakers and not for Code Zero sails. A Code Zero is projected to very high load and for the bowsprit to be used, the USL must be drastically reduced as opposed to when used for gennaker.

Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12677708443

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Travis McKinstry
Waukegan, US
★★★★★ 5
High quality, super sticky, very effective
Style: 30 sqft
As long as the surface is thoroughly cleaned, these mats will stick to just about anything. They provide my car with a tremendous amount of sound dampening and have made riding in the car 10 times more enjoyable. I drive a Toyota Yaris and although the engine is built like it's meant to last forever (imagine that), the rest of the car is not of high quality. Which means we used to get A LOT of noise coming from the road, other cars, etc. After I installed these mats which, by the way, I wasn't able to install on every surface I wanted to install them on (due to lack of tools to be able to disassemble certain parts of the interior), the noise coming from outside the car is nearly completely gone. I covered the underside of my hood, the entire interior part of the hatchback, most of the floor in the trunk / spare tire well, and the entire interior side of the doors. The parts I couldn't get to (or didn't want to) were: the ceiling, underneath the driver & passenger seats, behind the dash and the floor for the 2nd row seating. As you can see I left a lot of surfaces untreated with this product AND STILL it blocks most of the sound. To note: people recommended getting the roller tools to help install these mats. I got a few of them in different sizes and they worked O K. Not because of the quality of the tool but because some places you need to install these mats in don't have enough clearance to use the tool. That being said, for the larger surfaces, the roller tools help a lot. Also I found it very beneficial to use aluminum tape while installing these. The tape I used is specifically designed for materials that undergo high temperature changes (like your dryer vents, etc.). This wasn't because the mats were not sticky enough but because there were some places I installed the mats with small gaps between them. I'd also recommend getting some kind of fluffy insulation-type material for large spaces that need noise dampening. Rock wool, for example, worked great for me. As an example, the interior sides of the 2nd row seating walls had large spaces between the plastic interior cover and the metal part of the car wall. I'd install the mats on the metal but was left with 6" - 7" of space between it and the plastic cover. I chose to fill those spots (and spots like it) with insulation which provided EVEN MORE noise dampening.
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Reviewed in the United States on November 25, 2024
C
Verified Purchase
Cee
Lexington, US
★★★★★ 5
Best butyl out there.
Style: 30 sqft
If you want the money you're spending on equipment to pay off, you NEED to deaden sound! I've used every major brand and siless is my favorite to work with and the best value for your money, I'm not just adding weight, it's a thermal barrier and reduce outside noise. I turned a 10 year old, base model civic into what feels like a top tier Lexus . Does not offgas, no smell. Super easy to install. Make sure you get a set of rollers! They're required to achieve the advantages of this stuff, it MUST be adhered well and you don't want to tear the interior out twice.
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Reviewed in the United States on August 10, 2025
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Amazon Customer
Natrona Heights, US
★★★★★ 5
Yes
Style: 30 sqft
Easy to work with, quiets doors very well, cuts very easily to any shape needed or wanted with scissors, sticks well, and molds in to place well
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Reviewed in the United States on May 11, 2026
M
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Mathew Pullin
Phoenix, US
★★★★★ 5
Easy to install and easy to cut! Good quality
Style: 30 sqft
Details in the video! Only used dynamat in the past so I was hesitant to use this. Hesitant no more and the price was good. Good value, easy install, very happy!
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Reviewed in the United States on January 26, 2026
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Verified Purchase
GS_adventure_Guy
Whiting, US
★★★★★ 5
Worth every penny
Style: 6 sqft
Works great! I have a van and it took all the noise out of the rear doors. I am almost in shock at how quiet it is now.
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Reviewed in the United States on May 7, 2026

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