FatSac Tube Sac Ballast Bag

Long, narrow in-floor compartments often end up empty and wasted during active summer runs, but the FatSac Tube Sac Ballast Bag converts that hidden hull area into a wave-shaping asset. FatSac specifically shaped this W704 Pro-X series long bladder with a slim 16-inch cross section to slip perfectly into restricted ski lockers or narrow side seat benches. Displacing 370 lbs of raw water weight in the mid-ship helps plane the hull out quickly, lengthening your wavesurf wave zone. The flat center leveling ensures wakeboarding transition paths stay long, clean, and highly predictable. Every crest lip clears beautifully.

The rugged exterior skin uses a proprietary, layered polyvinyl chloride fabric engineered to tolerate intense high-pressure hydraulic forces without expanding into an unstable log shape. High-frequency welded and seam-taped joints eliminate traditional splitting risks, keeping your internal stringer channels safe from high-volume water leaks. Inboard captains building an automated pumping loop match these inset valve ports with hardware from our boat wakeboard package sets inventory to optimize fill speeds. Four inset ports handle flexible hose routing.

Why Choose FatSac Tube Sac Ballast Bag

Standard bulky ballast bladders bunched into narrow lockers crease, pinch, and split along the corners when the hull hits heavy lake chop, dumping hundreds of gallons inside your bilge. The FatSac Tube sac prevents this expensive damage by packing a slim silhouette and commercial-grade polyvinyl skin together, protecting your boat plumbing budget.

Factory Warranty & Professional Care Guidelines

FatSac protects this Pro-X series sac with an official 1 Year Limited Manufacturer Warranty covering material and bonding defects. To keep the polyvinyl fabric flexible and protect the valve ports, rinse off lake muck after use. Store the bladder completely dry inside a dark locker.