Supra Sunsport 21V Rear Ballast Upgrade (2010-2013)

Upgrade your 2010–2013 Supra Sunsport 21V with the WakeMAKERS Factory Ballast Upgrade Kit—designed to replace the factory rear ballast bags with high-capacity 640lb WakeMAKERS FIT Series bags. This model-specific solution boosts the performance of your wake by utilizing every inch of available space in your rear lockers for a cleaner, bigger, and more powerful wave.

Whether you're wakeboarding or surfing, this upgrade is the key to unlocking your boat’s true wake potential—while maintaining the convenience of your factory dash controls through the Gravity III ballast system.

Bigger Wake, Better Ride

The stock ballast setup on the Sunsport 21V doesn’t provide enough weight to create the kind of wake serious riders need. The 640lb UniversalFIT bags included in this kit are designed to fully fill the rear lockers on your boat, increasing displacement and resulting in a larger and more shapely wake.

Seamless Factory Integration

This is a direct-fit, plug-and-play solution for boats equipped with the Gravity III ballast system. No additional wiring or hardware is needed. The upgrade connects to your boat’s existing plumbing and is controlled entirely from your factory dash ballast switches.

DIY-Friendly or Pro-Ready Install

Thanks to pre-assembled fittings and connectors, installation is quick and can typically be done at home in a few hours. Prefer a professional install? Any WakeMAKERS-certified technician can handle it with ease.

Key Features:

• Designed for 2010–2013 Supra Sunsport 21V
• Includes two 640lb WakeMAKERS UniversalFIT ballast bags
• Maximizes use of rear locker space for increased ballast
• Improves wake height, shape, and push for surfing and wakeboarding
• Seamlessly integrates with the Supra Gravity III ballast system
• Maintains full control using existing dash switches
• Plug-and-play installation with all fittings pre-assembled

Compatibility Note:

This upgrade kit requires the Supra Gravity III ballast system. If your Sunsport 21V does not have factory rear ballast, additional components will be required for complete 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