Product Description
Enhance your 2005–2013 Supra Launch 21V with the WakeMAKERS Factory Ballast Upgrade Kit—built to replace the factory rear ballast bags with custom-fit 640lb FIT Series bags. Designed to maximize your rear locker space, this upgrade significantly increases ballast capacity, delivering a bigger, more powerful wake for both surfing and wakeboarding.
The stock ballast setup in the 21V limits your boat’s wake potential. This WakeMAKERS upgrade unlocks it, letting you load the hull deeper in the water for improved wave shape, size, and performance—all while maintaining the convenience of your factory ballast controls.
Precision Fit for Supra 21V
The included 640lb FIT Series ballast bags are tailored to make the most of the 21V’s rear lockers. Unlike undersized factory bags, these custom-fit options fully utilize available space, giving you more weight in the right places without sacrificing usability or storage.
Fully Integrated and Easy to Use
This upgrade is plug-and-play with the Supra Gravity III ballast system. No wiring, switches, or extra plumbing required. Simply drop the new bags into place using the included pre-assembled fittings and connectors, and you’re ready to go. The system fills and drains using your original dash switches—no extra steps, no hassle.
DIY or Pro Installation
All parts come pre-assembled for an easy DIY install that takes just a couple of hours. Prefer professional help? A WakeMAKERS-certified installer can handle the upgrade quickly and cleanly.
Key Features:
- Designed specifically for 2005–2013 Supra Launch 21V
- Includes two 640lb WakeMAKERS UniversalFIT ballast bags
- Maximizes locker space to increase ballast capacity
- Significantly improves wake size and shape for wakesurfing and wakeboarding
- Seamless integration with Supra’s Gravity III ballast system
- Uses existing dash controls—no new switches or pumps needed
- Plug-and-play install with pre-assembled fittings and connectors
Compatibility Note:
This upgrade kit requires the Supra Gravity III ballast system. Boats not equipped with the rear ballast option will need additional components for full system integration.
What’s Included:
- (1) Port-side 640lb UniversalFIT Ballast Bag
- (1) Starboard-side 640lb UniversalFIT Ballast Bag
- All required pre-assembled fittings and connectors for installation