
All of our Pro X Series Fat Sacs™ are constructed with a white water rafting material called Valmex. These sacs are unbelievably durable and no longer need the support of an outer shell. They also come equipped with our Quick Connect Valve system which makes filling and draining these things an easy task. Furthermore, the placement of our valves makes it possible to daisy-chain the sacs to create the perfect integrated ballast system. All sacs are available in assorted colors so you can customize the look of your system.
Pro X Series Fat Sac™ - W707
dimensions: 50 x 20 x 20 weight: 750 lbs. / 340 kg.
The original fat sac™ redefined and setting new standards. These sacs are the most demanded sacs on the market for their durability and ease of use. Two of these on either side of the engine will add 1500 lbs. of ballast when full.
Pro X Series V-Drive Sacs (set) - W701
dimensions: 42 x 16 x 16 weight: 400 lbs. / 181 kg. each
The Pro X Series V-Drive Sacs are exactly what you think they are. Designed to fit in the compartments on either side of the engine in v-drive boats, these sacs are perfect for the ballast you need. They are similar in size to our Fat Sac™ but a bit shorter in length for a perfect fit. Combined with the weight of the engine, these sacs will produce a monster wake.
Pro X Series Nautique Wedge Sacs (set) - W708
dimensions: 42 x 16 x 18 weight: 400 lbs. / 181 kg. each
The Pro X Series Nautique Wedge sacs are shaped to fit the compartments of the new line of Nautique V-Drive boats, but can be used in any boat. They may have a lower profile but they still add a lot of weight.
Pro X Series Tube Sac - W704
dimensions: 62 x 16 x 10 weight: 370 lbs. / 168 kg.
The Pro X Series Tube Sac can be used in the ski locker of your boat or on the floor just forward of the engine compartment. It’s longer and narrow enough to fit perfectly along the walkway to the bow. You could also opt for one in the ski locker and one on the floor above it.
Pro X Series Side Sacs (set) - W703
dimensions: 48 x 12 x 12 weight: 260 lbs. / 118 kg. each
The Pro X Series Side Sacs fit along the side of the engine compartment on inboard boats. They are designed to get more weight to the center of the boat to balance any ballast you may have aft of the engine. Their narrow profile also makes for a better fit than a Fat Sac™.
Pro X Series Fat Seat - W710
dimensions: body- 26 x 63 x 13 arms- 58 x 13 x 13 weight: 1525 lbs. / 692 kg.
The Pro X Series Fat Seat is design for inboard boats that have a removable rear seat. This thing is huge and it’s strong enough to sit on. It has two arms that extend forward on either side of the engine compartment to add even more weight.
Pro X Series Rear Seat Sac - W705
dimensions: 60 x 26 x 10 weight: 650 lbs. / 295 kg.
The Pro X Series Rear Seat Sac is a smaller version of the Fat Seat minus the arms. It has a lower profile but adds a lot of weight to the rear of the boat, leaving your compartments open for storage.
Pro X Series Open Bow Sac - W706
dimensions: 54 x 54 x 54 x 12 weight: 1000 lbs. / 454 kg.
The Pro X Series Open Bow Sac is triangular in shape and fits open bow boats. Just set it up front and fill it. The size of this sac allows you to fine-tune the forward and aft weight distribution. Chances are that this is the only sac you will need up front.
Pro X Series Integrated Bow Sac - W711
dimensions: body- 20 x 29 x 12 arms- 32 x 12 x 12 weight: 650 lbs. / 295 kg.
The Pro X Series Integrated Bow Sac is designed to fit under the seats of open bow boats adding needed weight to the front of the boat for the perfect weight distribution. It will fit under the seats of any open bow boat so it’s out of the way and the seats are still available for use.
Pro X Series Inboard Wake Surf Sac - W716
dimensions: body- 20 x 22 x 12 arms- 50 x 12 x 12 weight: 700 lbs. / 318 kg.
The Pro X Series Inboard Wake Surf Sac is ideal for your inboard boat. Its shape places the weight where you need it to create the desired wake for wake surfing. Combine this sac with the Fat Brick to tailor the wake for your specific needs.
Pro X Series V-Drive Wake Surf Sac - W713
dimensions: 42 x 16 x 16 weight: 400 lbs. / 181 kg.
The Pro X Series V-Drive Wake Surf Sac fits perfectly in the compartment of your v-drive boat to produce a nice wake for surfing. Try combining this sac with the Pro X Series Fat Brick to help you control the shape of your wake.
Pro X Series Fat Brick - W702
dimensions: 16 x 16 x 16 weight: 155 lbs. / 70 kg.
Do you have a “larger” buddy that makes it difficult to balance the weight distribution in your ride? The Pro X Series Fat Brick will help you solve this problem. This little thing weighs in at 155 pounds when full. Its handles and compact size allow you to quickly reposition it to fine-tune the boat’s wake and eliminate any unwanted wash.
Enzo Sac - W712
dimensions: body- 30 x 25 x 26 arm- 72 x 25 x 12 weight: 1450 lbs. / 658 kg.
The Enzo Sac is enormous. It’s designed for v-drive boats that have an opening in the rear seat bulkhead which leads forward under the side passenger benches. The large part of the sac fills the storage compartments on either side of the engine while the lower profile extension runs forward below the seats.
NOTE: MUST PURCHASE FITTINGS SEPERATELY
MasterCraft X-2 Rear Sac - W714 / W714-KIT
dimensions: 32 x 18 x 20 weight: 455 lbs. / 206 kg.
The X-2 Rear Sac was designed to fit perfectly in the shorter rear compartments if this boat. It may be a bit shorter than the traditional Pro X Series Fat Sac™ but it still adds some serious weight to the boat.
NOTE: MUST PURCHASE FITTINGS SEPERATELY WITH PART# W714
| PART# W714 | 1 | Custom Rear X-2 Sac |
| PART# W714-KIT | 1 | Custom Rear X-2 Sac |
| 1 | 2' of 1" reinforced black bildge hose | |
| 2 | W743 fittings | |
| 2 | W741 fittings |
Rear Gravity Games Sac - W841
dimensions: 42 x 19 x 19 weight: 565 lbs. / 256 kg.
The Rear Gravity Games Sac is built to fit in the compartment of v-drive boats. Two of these sacs combined with the Center Gravity Games Sac provide over 2,300 lbs. additional ballast to your boat. It’s easy to see why this is the combination used in all the Gravity Games boats. They will produce a huge, clean wake that will boot you for explosive moves.
Center Gravity Games Sac - W842
dimensions: 88 x 19 x 19 weight: 1180 lbs. / 535 kg.
Take the Pro X Series Fat Sac™ and add 38 inches to its length... that’s right, this thing is massive. The Center Gravity Games Sac is only one inch smaller in width and height but at over 3 feet longer, it weighs in at nearly twice the weight of a single Fat Sac™. Try combining this sac with two Rear Gravity Games Sacs for one monster of a wake.
MasterCraft X-Star Additional Ballast - 558031
weight: 2500 lbs. / 1135 kg.
Ride the same wake as the pros. We worked with the engineers at MasterCraft to design this system so you know that it meets their high standards of quality. This package is no joke with 4 sacs that are designed to be installed on top of the factory ballast hard tanks. Over 2500 lbs. additional ballast... Enough said.
NOTE: MUST PURCHASE FITTINGS SEPERATELY WITH PART# W715
| PART# 558031 | 2 | Custom Rear V-Drive Compartment Sac - 40 x 22 x 22 |
| 2 | Custom Front Open Bow Sac (under seats) - 40 x 22 x 6 | |
| 3 | Custom Distribution Flow Valve | |
| 1 | 50' of 1" reinforced black bildge hose | |
| 3 | Check Valve T-Assembly for venting | |
| 30 | hose clamp | |
| all | custom fittings (all preinstalled with PVC cement) | |
| PART# W715 | 2 | Custom Rear V-Drive Compartment Sac - 40 x 22 x 22 |
| 2 | Custom Front Open Bow Sac (under seats) - 40 x 22 x 6 |
download the MasterCraft X-Star additional ballast diagram ![]()
MasterCraft X-2 Additional Ballast - 558032
weight: 1600 lbs. / 725 kg.
The X-2 might be considered the little brother of the X-Star, but it still has the ability to throw a monster wake. To uleash this boat's potential, we teamed up with MasterCraft to design the X-2 Additional Ballast System. This package includes 3 sacs that are designed to be installed on top of the factory ballast hard tanks. Add over 1600 lbs. of neatly tucked away weight to your boat.
| PART# 558032 | 2 | Custom Rear X-2 Sac |
| 1 | Custom X-2 Integrated Bow Sac (under seats) | |
| 3 | Custom Distribution Flow Valve | |
| 1 | 50' of 1" reinforced black bildge hose | |
| 3 | Check Valve T-Assembly for venting | |
| 30 | hose clamp | |
| all | custom fittings (all preinstalled with PVC cement) |
download the MasterCraft X-2 additional ballast diagram ![]()
Super Air Nautique Additional Ballast - W760
weight: 1600 lbs. / 725 kg.
Take your Super Air Nautique wake to the next level with our all new Super Air Nautique Additional Ballast package. We worked with Correct Craft team riders to come up with this system to maximize the size of your wake. It is a 1600 lb. system that consists of four sacs that are designed to be installed on top of the factory ballast system. Imagine a Super Air Nautique wake with an additional 1600 lbs... Talk about Flying
NOTE: THIS SYSTEM FITS SUPER AIR NAUTIQUE MODELS 210, 220, 230, 236
| PART# W760 | 1 | W709 - Tsunami Pump |
| 1 | W702 - Fat Brick | |
| 1 | W741 - fitting | |
| 7 | W746 - fittings | |
| 7 | W743 - fittings | |
| 1 | W701 - Pro X Series V-Drive Sacs (set of 2) | |
| 1 | W711 - Pro X Series Integrated Bow Sac |
download the Super Air Nautique additional ballast diagram ![]()
Custom Sacs - W507-C
ANY SHAPE... ANY SIZE... ANY VALVE CONFIGURATION
You can special order sacs to suit your needs. We make all of our Fat Sacs™ in house which gives us the ability to create custom sacs for our customers. The same process that is used to build our Pro X Series line of Fat Sacs™ will be utilized to create your custom sacs. By using our advanced cutting machine, welding system and Valmex material we can assure you that your designed sac will be extremely durable and of the highest quality. You also decide on which type of Quick Connect fittings you would like to use, how many there are and their exact location on the sac. Whether it's a totally customized integrated system you are looking for, or just a single sac, let your creative juices flow because you're in control.
download the custom sac order form ![]()
Tsunami Pump - W709
gallons per hour: 1200
The Tsunami Pump System is designed to fill and empty sacs at an alarming rate. The tubing we use is larger in diameter so it doesn't choke the pump, resulting in greater output. Combine this with our Quick Connect Valves and you’ll be riding faster than ever before.
Quick Connect System
mouse over buttons to see fittings
Our Quick Connect Valves have been designed with you in mind. All of the fittings make connecting pumps and hoses to your Pro X Series Fat Sacs™ a quick and simple task. No more struggling with old waterbed valves and water spilling inside the boat. Simply twist, pull, replace and Bam!... You're starting your first set. We offer several different fittings that all work together to adapt to any of your needs.
All of our sacs come with W730 and W739 fittings. If you want a check valve system, you must order it separately.
If the cap of your Quick Connect valve becomes hard to install, apply some o-ring grease to the o-ring. This will keep your fittings working smoothly and o-rings in good condition.
download a PDF of all fittings and their descriptions ![]()
