FatSac Gray V-Drive Sac Set – High Flow

The FatSac Gray V-Drive Sac Set – High Flow includes two matching gray ballast sacs designed for port and starboard rear engine compartments in V-drive inboard boats. Each sac holds 400 lb of water ballast, creating 800 lb of added ballast when both are filled. Measuring 42 x 16 x 16 inches per sac, the pair holds approximately 96 U.S. gallons combined. High-Flow fittings and oversized bottom ports support faster water transfer with compatible ballast pumps and plumbing systems.

Each ballast sac uses layered commercial-grade PVC fabric with welded, seam-taped construction for repeated marine use. Four valve ports on each sac provide flexible filling, venting, and draining options, while the package includes two W731 fittings, one W749 fitting, and one W730 High-Flow quick-connect fitting. The matching pair supports more balanced rear ballast placement across port and starboard compartments. Confirm locker dimensions and safe boat capacity before filling both sacs, then balance water weight according to the intended wake or surf-wave setup.

For Balanced V-Drive Rear Ballast

The FatSac Gray V-Drive Sac Set is designed for V-drive inboard boats that use separate port and starboard rear compartments for ballast placement. Filling both 400 lb sacs creates a balanced 800 lb rear ballast configuration, while filling one side can support more directional weight distribution when shaping a wake or surf wave. Measure each compartment before installation, use compatible high-flow fittings and pumps, monitor water transfer, and operate the boat only within its stated passenger, ballast, and handling limits.

Why Choose FatSac Gray V-Drive Sac Set – High Flow

This set gives V-drive boat owners two matched 400 lb ballast sacs instead of requiring separate bags for port and starboard placement. The 42 x 16 x 16-inch dimensions, 96-gallon combined capacity, four-port layout, and oversized High-Flow bottom ports create a practical rear-ballast configuration for wake and surf-wave tuning. Included W731, W749, and W730 fittings add useful connection hardware, while the welded, seam-taped PVC construction supports repeated fill-and-drain use in marine environments.

Warranty and Product Care

The FatSac Gray V-Drive Sac Set – High Flow includes a 1-year limited manufacturer warranty, subject to applicable terms, conditions, and exclusions. Inspect both sacs, welded seams, valve ports, High-Flow fittings, plugs, and quick-connect components before each fill. Keep ports clean and securely sealed, avoid sharp edges or hot engine components, drain each sac fully after use, and allow the bags to dry before storage. Do not use a ballast sac with leaks, damaged fabric, loose fittings, or compromised seams.