WakeBallast Water Ballast WakeBallast Supra SA400 Rear Ballast Larger Bags
WakeBallast Water Ballast WakeBallast Supra SA400 Rear Ballast Larger Bags
Ships in 48–72 hrs
2-Year Warranty
Made in Arizona

WakeBallast

WakeBallast 2005-2008 Supra Launch 21V SnugFIT Rear Larger Ballast Bags

$643.99 $419.95 Sale
  • ✓ Ships within 72 hours — guaranteed
  • ✓ 2 Year manufacturer warranty
  • ✓ Made in Chandler, AZ - not drop-shipped
  • ✓ Questions? Call (877) 321-7962

More weight in the rear means a bigger wake and a better surf wave. This bag drops directly into your factory ballast system — no custom plumbing, no rewiring. It fills and drains automatically using your existing dash switches, just like stock, but with significantly more capacity.

Built in Chandler, Arizona and backed by a 2-year warranty. Most orders ship within 48–72 hours.

Each bag comes with male quick release 1 1/8” fittings to connect to your existing female quick release hose ends. If your boat requires different fittings, browse our fittings here.

Supra Ballast Upgrade Kit (640 lb FIT Series – Gravity III Required)

Increase ballast capacity and improve wake performance with a direct-fit upgrade that maximizes rear locker space.

Lead Time

System Requirement

  • Requires Supra Gravity III Ballast System
  • Must have factory rear ballast option

What This Upgrade Does

  • Replaces factory ballast bags with 640 lb FIT Series bags
  • Adds up to 1,280 lbs total ballast capacity
  • Maximizes rear locker space
  • Produces a larger, cleaner wake for wakesurfing and wakeboarding

Factory Integration

  • Connects directly to your existing ballast system
  • Controlled using factory dash switches
  • Maintains automatic fill and drain functionality

Why Upgrade

  • Factory ballast often leaves unused capacity
  • This upgrade increases weight without added complexity
  • Delivers a more consistent and powerful wake

What’s Included

  • (2) FIT Series 640 lb Ballast Bags
    • Port side
    • Starboard side
  • Pre-assembled fittings and connectors

Installation

  • Plug-and-play design
  • Install in a few hours with basic tools
  • Professional installation available through a certified marine service center

Fitment

  • Designed for Supra boats equipped with Gravity III ballast systems
  • Installs in rear lockers

Specs

  • Total Ballast Capacity: 1,280 lbs
  • Warranty: 2 Years
  • Manufacturer: WakeBallast

Made in the USA

Manufactured by WakeBallast in Chandler, Arizona using high-quality materials and precision construction.

Summary

A straightforward ballast upgrade that increases capacity, improves wake performance, and maintains full factory control and ease of use.

★★★★★ 4.9/5 — Rated by 760+ WakeBallast customers
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