Flex 21

The SeaArk Flex 21 is built for anglers who want maximum space and versatility in a tough, all-welded platform. At 21 feet long with a wide 72″ bottom, it delivers excellent stability, generous storage, and a flexible layout that adapts easily to crappie, catfish, or multi-species fishing.

Standards & Options ▸

GALLERY ▸

SPECIFICATIONS

Length

21'

Beam

94"

Bottom Width

72"

Side Depth

26"

Gauge

0.125

HP Rating

250

Weight Cap

2000

Persons Cap

5/730

Approx Weight

1800

Transom Height

25"

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FLOOR PLAN

COLOR
UPHOLSTERY

Standard

Kilim Beige

Olive Drab

Sharkskin

Tan

Black Fox

Khaki Aqua

Dark Olive

Flat Black

Camo

Mossy Oak Bottomland

SeaArk Old Oak

SeaArk Water Oak

Mossy Oak Shadow Grass

Mossy Oak Break Up

Urethane

Black Magic

Mystic White

Coastal Green

Bloodline Red

Smoked Quartz

Battle Gray

Patriot Red

Metallic Sage Green

Woodlands Green

Sand Dune

Platinum Sliver

Dynamic Blue

Slime Lime Green

Omaha Orange

Camo

Urethane

Standard

Kilim Beige

Olive Drab

Sharkskin

Tan

Black Fox

Khaki Aqua

Dark Olive

Flat Black

Camo

Mossy Oak Bottomland

SeaArk Old Oak

SeaArk Water Oak

Mossy Oak Shadow Grass

Mossy Oak Break Up

Urethane

Black Magic

Mystic White

Coastal Green

Bloodline Red

Smoked Quartz

Battle Gray

Patriot Red

Metallic Sage Green

Woodlands Green

Sand Dune

Platinum Sliver

Dynamic Blue

Slime Lime Green

Omaha Orange

Camo

Urethane

STANDARDS & OPTIONS

Standard Features
.125 GAUGE TREADPLATE FLOOR	S
12V ACCESSORY PLUG ON CONSOLE	S
15 DEGREE ALL WELDED HULL	S
41-GAL BELLY FUEL TANK	S
60-GAL LIVEWELL IN BACK DECK	S
800 GPH FRESH WATER AERATOR	S
3/16" EXTRUDED KEEL	S
5052 ALUMINUM	S
ALL ALUMINUM FLOORS & DECKS	S
ALUMINUM SIDE CONSOLE	S
BOW TILT / TRIM SWITCH	S
CENTER LOCKABLE ROD BOX	S
COVERED & FLOORED AREA FOR BATTERIES	S
LED COURTESY LIGHTS	S
LED NAV LIGHTS	S
NMMA CERTIFIED	S
OVERSIZED EXTRUDED CAPRAILS W/ ACCESSORY TRACK & RUB RAIL	S
PROGUIDE DOUBLE CLEAN POWER HARNESS FOR ELECTRONICS	S
RECESSED TROLLING MOTOR PLATE W/ MOUNTING BRACKETS UNDERNEATH	S
RECIRCULATION PUMP	S
REMOVABLE WINDSHIELD	S
SEASTAR HYDRUALIC STEERING	S
SIDE PANELS	S
STAINLESS STEEL BOW & STERN EYES	S
STANDARD / CAMO / URETHANE PAINT	S
TRANSDUCER BRACKET	S
TROLLING MOTOR WIRING (6 GAUGE)	S
TILT HELM	S
WIRING TUBES FOR DEALER / CUSTOMER RIGGING	S
x2 FOLD OUT STORAGE BOX IN SIDE PANEL	S
x2 MILLENNIUM SEAT KITS FOR FRONT & BACK DECK	S
x2 SEAT CO SEATS ON SMOOTH MOVE AIR RIDE BASES	S
x2 STORAGE BOXES IN BACK DECK	S
x2 STORAGE BOXES IN FRONT DECK	S
x4 BATTERY TRAYS	S
x4 HYDRAULIC SHOCKS FOR FRONT STORAGE BOXES	S
x4 NYLON CLEATS	S
x6 STAINLESS STEEL SEAT BASE PLATE - THREE ON FRONT DECK - THREE ON BACK DECK	S
GATORHIDE	S
Engine Selection
Suzuki
Suzuki DF200ATX	O
Suzuki DF200ATXSS	O
Suzuki DF250TX	O
Suzuki DF250TXSS	O
Mercury
Mercury 200XL	O
Mercury 200XL Pro XS	O
Mercury 250XL	O
Mercury 250XL Pro XS	O
Yamaha
Yamaha VF200XB SHO	O
Yamaha F250XB	O
Yamaha VF250XB SHO	O
Yamaha F200XD	O
Honda
Honda BF200DXRA	O
Honda BF250DXRA	O
Engine Pre-Rig
Center Console
Suzuki	O
Mercury	O
Yamaha	O
Honda	O
Yamaha Digital Tach Upgrade	O
Engine Accessories
Fuel/Water Seperator	O
Transom Saver	O
Prop
PowerTech Stainless Prop: 150hp-350hp	O
PowerTech Aluminum Prop: 150hp-300hp	O
Jackplate
Atlas 6" Hydraulic Jackplate	O
Atlas Black 6" Hydraulic Jackplate	O
Trailer
Painted
Tandem Axle	O
Galvanized
Tandem Axle	O
Aluminum
Tandem Axle	O
Trailer Options
Painted/Galvanized
Deluxe Trailer Pkg (Tandem Axle)	O
Upgrade to Aluminum Wheels (Single Axle)	O
Upgrade to Aluminum Wheels (Additional Axle)	O
14" Spare Tire - Silver Wheel	O
14" Spare Tire - Galvanized Wheel	O
14" Spare Tire - Aluminum Wheel	O
Swing Away Tongue	O
LED Lights	O
Boat Buckle Ratchet Tie Downs	O
Disc Brakes	O
Disc Brakes (Additional Axle)	O
Torsion Axle (Single Axle)	O
Torsion Axle (Additional Axle)	O
Plastic Bunk Covers (Single Axle)	O
Plastic Bunk Covers (Tandem Axle)	O
F2 Jack & F2 Winch Pkg	O
LED Lights & Back Up Combo	O
"SeaArk" Laser Cut Lighted Step Pad	O
J-Step	O
GatorHyde Coating (Tandem Axle)	O
7 Pin Plug	O
Aluminum
LED Lights	O
Boat Buckle Ratchet Tie Downs	O
Disc Brakes	O
Disc Brakes (Additional Axle)	O
Torsion Axle (Per Axle)	O
F2 Jack & F2 Winch Pkg (Alum Trailer)	O
Torsion Axle (Additional Axle)	O
Packages
Millennium
Millennium Crappie Pkg w/o Seats	O
Millennium Crappie Pkg w/ 2 Seats	O
Exterior Color
Standard
Kilim Beige	O
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Camo
Mossy Oak Bottomland	O
SeaArk Old Oak	O
SeaArk Water Oak	O
Mossy Oak Shadow Grass	O
Mossy Oak Break Up	O
Real Tree Timber	O
Mossy Oak Treestand	O
Urethane
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Interior Color
Standard
Kilim Beige	O
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Flat White	O
Camo
Mossy Oak Bottomland	O
SeaArk Old Oak	O
SeaArk Water Oak	O
Mossy Oak Shadow Grass	O
Timber Real Tree	O
Mossy Oak Break Up	O
Urethane
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Standard - Semi Gloss
Mystic White	O
Smoked Quartz	O
Battle Gray	O
Sand Dune	O
Platinum Sliver	O
Additional Paint Options
Two Tone Paint Design
Battle Flag	O
Dart Stripe only on Break	O
Bottom of Hull Only Color	O
Two Tone Paint - Battle Flag
Kilim Beige	O
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Mossy Oak Bottomland	O
SeaArk Old Oak	O
SeaArk Water Oak	O
Mossy Oak Shadow Grass	O
Timber Real Tree	O
Mossy Oak Break Up	O
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Two Tone Paint - Dart Stripe only on Break
Kilim Beige	O
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Mossy Oak Bottomland	O
SeaArk Old Oak	O
SeaArk Water Oak	O
Mossy Oak Shadow Grass	O
Timber Real Tree	O
Mossy Oak Break Up	O
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Two Tone Paint - Bottom of Hull Only Color
Kilim Beige	O
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Splatter Paint
Olive Drab	O
Sharkskin	O
Tan	O
Black Fox	O
Khaki Aqua	O
Dark Olive	O
Flat Black	O
Black Magic	O
Mystic White	O
Coastal Green	O
Bloodline Red	O
Smoked Quartz	O
Battle Gray	O
Patriot Red	O
Metallic Sage Green	O
Woodlands Green	O
Sand Dune	O
Platinum Sliver	O
Dynamic Blue	O
Slime Lime Green	O
Omaha Orange	O
Super Blue	O
Metallic Clear Coat
Metallic Clear Coat	O
Camo Match Engine
Camo Match Engine - Over 50hp	O
Decal Options
No Decal - Ship Loose	O
Upholstery Color
Fold Downs
Cirrus/Huron	O
Ebony/Truffle	O
OD Green	O
Bottomland	O
Shadow Grass	O
Break Up	O
Steering
Steering
Yamaha JC/Uflex Hyd Steering	O
Uflex Hydraulic Steering	S
Helm
Hydraulic Tilt Helm Upgrade	S
Steering Wheel
13 1/2in Stainless Steel Steering Wheel w/ Knob Upgrade	O
Black Polished Stainless Steering Wheel w/ Knob Upgrade	O
Electrical
Package
Complete Electrical Pkg w/ 8 Gauge TM Wire	S
Accessories
Horn Kit	O
Three Fish Courtesy Light	O
Power On/Off Switch	O
Gauges
Trim Gauge	O
Speedometer	O
Fuel Gauge	S
Volt Meter	O
Hour Meter	O
Seating
Uphosltery
Millennium Single Seat Kit	O
Camo Millennium Single Seat Kit	O
Tempress Probax Fold Down Seat Kit	O
Millennium Seat w/ SeaArk Logo	O
Camo Millennium Seat w/ SeaArk Logo	O
Saltwater Millennium Seat w/ SeaArk Logo	O
Tempress Probax Fold Down Fishing Seat	O
Camo Tempress Probax Fold Down Seat Kit	O
Accessories
Stainless Seating Hardware Pkg (Per Seat)	O
Accessories
Float Pods
72" Flotation Pods (Set)	S
Stainless Steel Telescoping Ladder	O
Power Pole / Talon Bracket (Starboard Side)	O
Power Pole / Talon Bracket (Port Side)	O
Cleats
Stainless Cleat Ugrade	O
8" Aluminum Cleat (Welded On)	O
Brackets
Reinforcement Bracket for Trolling Motor	O
Caprail Accessories
Square Bracket for Rod Holder	O
Depth Finder Bracket	O
Micro Anchor Bracket	O
Duck Blind Bracket	O
Tree Grabber	O
Shallow Water Anchor	O
Eye Ring	O
Cup Holder	O
Rod Holder	O
Double Rod Holder	O
Gun Rack	O
Cat Rack	O
Bimini Top/Full Enclosure
Bimini
72" Bimini Top (Black Canvas)	O
72" Bimini Top (Black Canvas & Black Frame)	O
Electronics & Trolling Motors
Garmin Depth Finders
Echomap UHD2 53cv w/ Transducer	O
Echomap UHD2 54cv w/ Transducer	O
Echomap UHD2 55cv w/ Transducer	O
Echomap UHD2 73cv w/ Transducer	O
Echomap UHD2 74cv w/ Transducer	O
Echomap UHD2 75cv w/ Transducer	O
Echomap UHD2 93cv w/ Transducer	O
Echomap UHD2 94cv w/ Transducer	O
Echomap UHD2 95cv w/ Transducer	O
Echomap Ultra 2 106sv w/o Transducer	O
Echomap Ultra 2 106sv w/ Transducer	O
Echomap Ultra 2 126sv w/o Transducer	O
Echomap Ultra 2 126sv w/ Transducer	O
GPSMAP 8610xsv w/ Sonar	O
GPSMAP 8612xsv w/ Sonar	O
GPSMAP 8616xsv w/ Sonar	O
Echomap Ultra 2 166sv w/o Transducer	O
Echomap Ultra 2 166sv w/ Transducer	O
GPSMAP 743xsv	O
GPSMAP 943xsv	O
GPSMAP 1243xsv	O
GPSMAP 1543xsv	O
GPSMAP 1643xsv	O
Garmin Livescope
Garmin Livescope Plus	O
Garmin Accessories
20ft GMN Cable	O
SteadyCast Heading Sensor	O
VHF 215 Marine Radio	O
Bail Mount w/ Knobs (Echomap Ultra 2 16sv)	O
Bail Mount w/ Knobs (GPSMAP 15x3 Series)	O
Bail Mount w/ Knobs (GPSMAP 8x10 Series)	O
Force Kraken Livescope Mount	O
GT-56 UHD-TM Transducer	O
GA 38 GPS & GLONASS Antenna for VHF, AIS, & Chartplotters (Black)	O
GA 38 GPS & GLONASS Antenna for VHF, AIS, & Chartplotters (White)	O
Humminbird Depth Finders
Helix 7 CHIRP MSI GPS G4N	O
Apex 13 MSI + Chartplotter	O
Apex 16 MSI + Chartplotter	O
Apex 19 MSI + Chartplotter	O
Helix 5 CHIRP DI GPS G3	O
XPLORE 9 CSMI+	O
XPLORE 10 CSMI+	O
XPLORE 12 CSMI+	O
Cornfield Fishing Mounts
Bridge Mount Extender 15" Span	O
Handscope 52" w/ Over the Side Mount	O
Folding Double Mount w/ Swivel Base	O
Folding Single Mount w/ Swivel Base	O
Telescoping Swivel Short Double Mount	O
Telescoping Swivel Short Single Mount	O
Telescoping Tall Swivel Double Mount w/ Bridge Extender 15" Span	O
Telescoping Tall Swivel Single Mount w/ Bridge Extender 15" Span	O
Console Double Swivel Mount w/ Under Plate (Flex)	O
Console Single Swivel Mount (Flex)	O
Deck Mount Single 6" Rail Mount Base (For Track Rail)	O
Double Mount 6" Arm	O
Double Mount 8" Arm	O
Double Mount 10" Arm	O
Double Mount 12" Arm	O
Single Mount 6" Arm	O
Single Mount 8" Arm	O
Single Mount 10" Arm	O
Single Mount 12" Arm	O
Launch Pad 4 Pole	O
Launch Pad 8 Pole	O
Mega Mount Adapter Plate	O
Over the Side Mount Deck Plate	O
Wire Puck	O
Over the Side Mount	O
Over the Side Mount SeaArk Track Mount	O
Trollling Motors
Minn Kota Ulterra 90/115 MSI WR Quest 60"	O
Minn Kota Riptide Instinct 90/115 WR Quest 60"	O
Garmin Force Pro 57"	O
Garmin Force Kracken w/ GT-56 63" Black	O
Garmin Force Krackenw/ GT-56 63" White	O
Minn Kota Terrova 112 DSC WR 60"	O
Minn Kota Terrova 90/115 MSI WR QUEST 60"	O
Minn Kota Riptide Terrova 90/115 WR QUEST 60"	O
Minn Kota Ultrex 112 DSC MR 52"	O
Minn Kota Ultrex 90/115 MSI MR QUEST 60"	O
Minn Kota Quick Release Bracket - MKA-64 Black	O
Minn Kota Quick Release Bracket - RTA-62 White	O
Shallow Water Anchors
Power Pole Blade 10ft (Port)	O
Power Pole Blade 10ft (Starboard)	O
Power Pole Blade 8ft (Port)	O
Power Pole Blade 8ft (Starboard)	O
Power Pole Pro Series 2 8ft (Port)	O
Power Pole Pro Series 2 8ft (Starboard)	O
Power Pole Pro Series 2 6ft (Port)	O
Power Pole Pro Series 2 6ft (Starboard)	O
Power Pole Pro Series 2 4ft (Port)	O
Power Pole Pro Series 2 4ft (Starboard)	O
Power Pole Sportsman 8ft (Port)	O
Power Pole Sportsman 8ft (Starboard)	O
Power Pole Drift Paddle Single	O
Power Pole Drift Paddle Dual Set	O
Minn Kota Talon 15ft (Port)	O
Minn Kota Talon 15ft (Starboard)	O
Minn Kota Talon 12ft (Port)	O
Minn Kota Talon 12ft (Starboard)	O
Minn Kota Talon 10ft (Port)	O
Minn Kota Talon 10ft (Starboard)	O
Power Pole Heavy Duty Spike / T Handle / 3/8" Line / 8ft	O
Minn Kota Raptor AA 8ft (Port)	O
Minn Kota Raptor AA 8ft (Starboard)	O
Minn Kota Raptor AA 10ft (Port)	O
Minn Kota Raptor AA 10ft (Starboard)	O
On Board Charger
Pro Guide PGC-110	O
Pro Guide PGC-210	O
Pro Guide PGC-310	O
Pro Guide PGC-410	O
Pro Guide PGC-510	O
Power Pole Charge	O
Minn Kota MK-110PCL	O
Minn Kota MK-220PCL	O
Minn Kota MK-345PCL	O
Minn Kota MK-460PCL	O
Minn Kota MK-550PCL	O
Pro Guide PGC-1224	O
Pro Guide PGC-1236X	O
Pro Guide PGC-21236	O
Fusion Sound System
Standard Fusion Sound System Pkg	O
See-Lite Brakes
See-Lite See-Brakes 2.0 - 40lbs	O
See-Lite See-Brakes 2.0 PRO - 40lbs	O
Batteries
Lead Acid
Pro Guide 24M800 - Starting	O
Pro Guide 27M800 - Starting	O
Pro Guide 24M140 - Deep Cycle	O
Pro Guide 27M180 - Deep Cycle	O
Pro Guide 31M225 - Dual Purpose	O
Lithium
Pro Guide 36VM50	O
Pro Guide 31M180-DP	O
Pro Guide 24VM90	O
Pro Guide 31M235-DP	O
Pro Guide 16VM160	O
Pro Guide 24VM115	O
Pro Guide 36VM75	O
AGM
Pro Guide 24MX935 - ST	O
Pro Guide 27MX935 - ST	O
Pro Guide 31MX1150 - ST	O
Pro Guide 24AGM - DP	O
Pro Guide 27AGM - DP	O
Pro Guide 31AGM - DP	O
LuxxDek Flooring
Pattern - Whole Boat
Pinline	O
Tarpon Scales	O
Teak	O
Hexagon	O
Pattern - Front & Back Deck
Pinline	O
Tarpon Scales	O
Teak	O
Hexagon	O
Pattern - Special Edition
Scaled Edition	O
Custom
Custom Logo	O
Top Color
Dark Gray	O
White	O
Mocha	O
Navy	O
Aqua Camo	O
Army Camo	O
Olive Green	O
Black	O
Shark Gray	O
Pebble Gray	O
Pearl	O
Vanilla	O
Desert Sand	O
Driftwood	O
Caramel	O
Copper	O
Java	O
Cocoa	O
Dark Cocoa	O
Royal Blue	O
Bermuda Blue	O
Coral Blue	O
Sea Blue	O
Mint Green	O
Lime Green	O
Keylime	O
Bright Yellow	O
Tangerine	O
Scarlett Red	O
Frost Camo	O
Bottom Color
Dark Gray	O
White	O
Mocha	O
Navy	O
Aqua Camo	O
Army Camo	O
Olive Green	O
Black	O
Shark Gray	O
Pebble Gray	O
Pearl	O
Vanilla	O
Desert Sand	O
Driftwood	O
Caramel	O
Copper	O
Java	O
Cocoa	O
Dark Cocoa	O
Royal Blue	O
Bermuda Blue	O
Coral Blue	O
Sea Blue	O
Mint Green	O
Lime Green	O
Keylime	O
Bright Yellow	O
Tangerine	O
Scarlett Red	O
Frost Camo	O

YOUR STORIES

Jamie Delude

JAMIE DELUDE

OKLAHOMA

“We just purchased our 2018 Big Easy last Spring. Our fascination with the Big Easy started around 10 years ago when they first came out. We looked at them during the Tulsa boat show. We owned another bass boat and pontoon and we finally decided to turn two boats into one and we couldn’t be happier. ”

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Flex 21

Flex 21

SPECIFICATIONS

FLOOR PLAN

Standard

Camo

Urethane

Camo

Urethane

Standard

Camo

Urethane

Camo

Urethane

STANDARDS & OPTIONS

YOUR STORIES

Request More Information

CATFISH

COASTAL

EASYS

COMMERCIAL

BASS & CRAPPIE

HUNTING

JONS

PREDATOR

FISHING