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FatSac C1046 Yamaha Jet Boat Custom 21 ft 725 lb Ballast Bag with Fittings - Grey

Manufacturer

FatSac

<h3>FatSac: The Original Ballast System for Wakeboarding &amp; Wakesurfing</h3><p>When it comes to shaping the perfect wake, few names carry more weight — literally — than <strong>FatSac</strong>. Manufactured by Fly High in Milwaukee, Wisconsin, FatSac is widely recognized as the original ballast bag brand in the wakeboarding and wakesurfing world. Decades of refinement and a relentless commitment to quality have made FatSac the go-to choice for riders who demand more from their boat's wake.</p><h3>Trusted by the Industry's Best Boat Builders</h3><p>FatSac's reputation is built not just by enthusiasts, but by the marine industry itself. Leading wake boat manufacturers — including Nautique, Malibu, Axis, Supra, and Moomba — have relied on FatSac ballast systems as OEM equipment straight from the factory. If you've owned a wake boat over the past decade, there's a strong chance it already came equipped with a FatSac inside. That level of industry trust is a testament to the brand's consistent performance and durability.</p><h3>Built to Last: Premium Materials and Craftsmanship</h3><p>Every FatSac is proudly handmade in the USA. The flagship Pro X Series bags are constructed from a three-layer Valmex material — the same type used in river rafts and inflatable watercraft — making punctures and abrasions a near-impossibility. FatSac also takes an extra step that sets it apart from competitors: extra-wide seams are not only welded but also taped, adding a second layer of protection against failure. This meticulous attention to detail is what keeps FatSac at the top of the ballast market year after year.</p><h3>A Complete Ballast Ecosystem</h3><p>FatSac's product lineup goes well beyond the iconic ballast bag. The brand offers a comprehensive range of <strong>ballast pumps</strong> — including the popular Supa Tsunami series, engineered for fast, efficient water transfer — as well as an extensive selection of <strong>fittings and plumbing components</strong> like quick-connect fittings, kink-proof hoses, and splitters to help riders build out fully integrated ballast systems. Whether you're setting up a simple aftermarket bag or a sophisticated automated plumbing network, FatSac has the hardware to get it done right.</p><h3>Bags for Every Boat Layout</h3><p>One of FatSac's greatest strengths is the sheer variety of bag shapes and capacities in their lineup. From the classic 750 lb universal bag that fits virtually any compartment, to purpose-built designs like the V-Drive Surf Sac, the Integrated Bow Sac, and the massive Fat Seat for direct drive boats, FatSac engineers ballast solutions for almost every wake boat configuration on the water. Custom-printed bags are also available, letting riders personalize their setup without sacrificing performance.</p><h3>Wake Enhancement and Accessories</h3><p>Beyond ballast, FatSac rounds out its catalog with wake enhancement tools and boat care accessories — everything a serious wakeboarder or wakesurfer needs to dial in their setup and keep their boat in top condition. From the Fat Brick for precision weight placement to electrical accessories like twin-socket USB splitters, FatSac thinks of the details so riders can focus on the ride.</p><p>Whether you're upgrading a factory ballast system or building a custom setup from scratch, FatSac delivers the quality, variety, and industry-proven performance that serious wake enthusiasts rely on.</p>

Part Number

C1046
09/17/2036 6:29 PM
Sale Price

$533.26

In Stock (7)

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Product Details

The FatSac C1046 is a semi-custom transom ballast bag engineered specifically for 21-foot Yamaha Jet Boats. Designed to tie down securely to the swim platform step, this 725-pound ballast bag adds significant weight to the rear of the vessel to help create a larger, more surfable wake.

Key Features:

  • 725 lbs of ballast capacity — dramatically improves wake size for wakesurfing and wakeboarding
  • Custom fit for 21 ft Yamaha Jet Boats (2006 to current model years)
  • Dimensions: 35"L x 26"W x 32.5"H for a precise fit on the swim deck
  • 4 welded-on PVC grab handles for easy rope or strap securing to the platform (tie-downs not included)
  • 2 fill/vent ports and 2 drain ports for efficient filling and emptying
  • Compatible with the FatSac Supa Tsunami Pump (W709-SUPA) for fast fill and drain times
  • Color: Grey

Included Fittings:

  • 1x W730 fitting (for use with Supa Tsunami Pump)
  • 2x W731 fittings
  • 1x W749 fitting/cap

Usage Tips: Before filling with water, inflate the bag with air to establish proper positioning and secure tie-downs. Once the bag is secured, fill with water and bleed the air via the top valve, then continue filling until the bag is 100% full to prevent movement during use.

Note: Grab handles are guides for ropes or straps only — they are not rated to support the full weight of the filled bag. Rope guides M1028 are available separately. 1-Year Manufacturer Warranty.

California Proposition 65 Warning: This product can expose you to chemicals including Diisononyl Phthalate (DINP), known to the State of California to cause cancer. For more information, visit P65Warnings.ca.gov.

Easy

Everything is great

I am very pleased with the item I received. I am disappointed that the shipping cost was so expensive. I am an ebay seller and this would not have cost half of what i was charged.

received put in vehicle seems to have solved problem

Right parts, great price and fast delivery.

Don't change a thing, its easy to navigate and the prices are great as well...

Quick service

fast, right parts, will use them again.

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