S21 Overview

We’ve all got priorities. By day you’re a hard-working professional. By weekend, an aspiring champion surfer. There’s no reason you can’t live the dream with the extraordinary S21. Designed with the professional in mind, it’s priced for the weekend warrior. The S21 first introduced Supreme’s QuickFill ballast system, which is a 750-pound capacity ballast tooled into the hull that fills with water in two minutes. In other words, it’s ready when you are to chase those goals. Optional Plug and Play ballast in the back is available to elevate your wake riding. It has room for 12, with safety and spacious seating prioritized.


See it in action

Standard Features

Custom designed interiors with top of the line marine vinyl and foam | Massive amounts of storage | Custom Vinyl Wrapped with Full Instrumentation | 40 oz Marine Carpet | Digital Speed Control | Depth Finder | Air – Water Temperature Display | Supreme Altitude Control System | Pro S4 Tower System (White or Black) | Swivel Flip up Bolster Driver’s Seat | Dual Fuel Fills | Stainless Cup Holders | Quickfill Ballast 1000lbs hull-flooding | Clarion Bluetooth Stereo | Snap-In 40oz Marine Carpet | Wake Plate.



Length w/out Platform 20′ 11″
Beam 102″
Draft 30″
Weight 4,200 lbs
Fuel Capacity 43 gals
Seating Capacity 12
Ballast 750 lbs (STD) + 1,100 lbs (OPT) =1,850 lbs
Engine GM Marine EX3 by Crusader 1.72:1 GR
Engine Warranty 5 Years

Design your perfect S21 masterpiece

Supreme Towboats S21