Boat Specifications

Make: Ski Supreme Boats
Model: S21
Year: 2017
Length: 20 ft. 11 in.
Type: Ski & Wakeboard Boats
Listing: 1785363
Buyer's Tools:

S21 Overview

The S21 was the first Supreme to introduce the Quickfill Ballast system which is a 1000lb hull-flooding ballast that fills the liner with water in under a minute. Optional Plug & Play ballast is available for professional wakeboarding and wake surfing. Inspired by the S226 the S21 is a wake surfing machine. The largest boat in its class with is excessive freeboard for performance, safety and spacious seating you'll be shocked at how big this smaller boat is. A larger extreme pickle-fork design gives maximum seating for 12.

Designed with the professional in mind, but priced for the weekend warrior, there is no other boat available that gives you a greater "bang for the buck". The single highest performing wake boat available with standard features others reserve for options.
Draft: 2 ft. 6 in.
Beam: 8 ft. 6 in.
Fuel tank capacity: 43
Max load: 1850
Standard features:
Specs
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



STANDARD FEATURES
GM Marine EX3 by Crusader 1.72:1 GR (5 Year Warranty)
Engine Water Intake Strainer
GelCoat Scheme Split
Crusader/PCM Digital Speed Control w/Paddle Wheel Input
4 Pull Up Cleats 6"
Stainless Steel Rub Rail Black
Rear View Mirror (STD)
Depth Finder
Fiberglass Swim Step
Supreme Friction Non-Skid Floor Kit Charcoal
2nd Battery Package with Control Center
Center Wake Plate
One Smooth Track Fin
Pro S5 Tower System (Black or White)
Supreme "Quick Fill" Ballast System
4a Clarion CM-2 Bluetooth, AM/FM USB Stereo, w/6 Wetsounds WS65B Speakers, and Wetsounds HT-6 Amp
Boatmate Tandem Axle Trailer w/Disc Brakes both Axles, Alum Wheels, LED Lighting, Swing Tongue, Stainless Retractable Transom Straps, Aluminum Fender Steps, Winch and Strap


Optional features:

Optional Equipment
Gelcoat Scheme Surf
Supreme Plush Logo Carpet Kit
Gator Grip Flooring Sharkfin Texture
Clarion MW-3 Large Transom Remote
Concert Series 2 Pair Wetsounds ICON-8 Speakers, & WetoundsHT-AS10 Sub mounted in Fiberglass Inclosure (Black or White)
Wake Plate Gauge
Fixed Board Racks Pro S5 Tower
Swivel Board Racks Pro S5 Tower
Supreme Comfort Package: Bow Fill Cushion, Supreme Soft Grip Flooring Medium Gray, Walk-through Wind Block, and 2 Extra Bow Cleats
Supreme Quick Surf System
SWSC Pkg: PTM Edge HD Mirror, PNP Rear Ballast (2-550lbs Bags Plumbed), QuickSurf and 2 Pair Board Racks (Swivel Lower & Fixed Upper)
Bimini Top Pro S5 Tower (Black Only)
Boat Cover Gray w/ Tower Anti-Pooling System (TAPS)
Bow Fill Cushion
Heater w/(1) Hot Tube & 2 Outlets
Under Water Transom Lights (Blue Only)
ZeroOff Pro GPS Cruise Control
Roll Supreme Trailer Package: (18″ Ultra 249 CPVD Chrome Wheels, Back-lit Logo Rear Steps, Back-lit Logo Rear Steps, 2-Tone Paint or Stainless Fenders, Runway Lighting, Transom Steps)
Roll Supreme Trailer Package: (18″ Ultra 249BM Black Alum Predator Wheels, Back-lit Logo Rear Steps, Back-lit Logo Rear Steps, 2-Tone Paint or Stainless Fenders, Runway Lighting, Transom Steps)
Paint over Elite Shield Top Coat (Solid Colors, No Pin Stripes, Boatmate Trailers Only)
GM Marine H5DI by PCM 1.72:1 GR (5 Year Warranty)
GM Marine H6DI by PCM 1.72:1 GR (5 Year Warranty)
Engine Flush Kit
Salt Water Package w/Engine Flush Kit and Zinc Anodes
High Altitude Prop (Exch)


Engine Options
GM Marine H5DI by PCM 1.72:1 GR (5 Year Warranty)
GM Marine H6DI by PCM 1.72:1 GR (5 Year Warranty)
Engine Flush Kit
Salt Water Package w/Engine Flush Kit and Zinc Anodes
High Altitude Prop (Exch)

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Ski Supreme
4394 Enterprise Place
Fremont, CA 94538
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