400 | 450 | 575
  • 23' 5"


  • 17


  • 3,500 lbs


Supra SL Profile
Supra SL 3/4
Supra SL Interior
Supra SL Overhead

2021 Supra SL

Inner Strength. Outer Beauty.

Top wakeboard boats throw huge wakes and surf performance that leaves an impression—that’s what the Supra® SL delivers, and then some. Throw massive waves and huge sessions behind this leading-edge performance towboat.

Starting at $144,800

Supra SL Overhead



Add traction and functional style throughout your Supra with GatorStep non-skid flooring. Available in 15 colorways, it’s just another way to make your statement.


Functional Seating


The versatile rear-facing convertible seat flips to unveil a standard table and cup holders so you can relax in comfort with your guests. The triple port lounge is equal parts comfortable and stylish.

floor storage

In-floor Storage


Bring it all, and then some. In-floor storage goes a long way to help keep your cabin organized, yet full of all the gear, boards and equipment you need on hand.

bow seating

Chill Tech Vinyl


Chill Tech Vinyl stays cool to the touch in direct sunlight to make relaxing and lounging even more comfortable—and makes dark interior colors attractive build options.


Surf Pipe


Add a surf pipe to keep your waves as clean as possible for surfing while lowering the exhaust note.

vision control

Vision Control


Three advanced touchscreen displays in the Vision Control System enhance the experience for the driver and passengers alike. Control lighting, music, heaters, and more with the touch of a finger.

JL audio



In addition to dual 10" M-6 subwoofers, 7.7" bow and 8.8” cockpit speakers, add up to four 8.8" M-6 JL tower speakers to push your premium JL Audio sound to the next level.

Dual Thrusters


New for 2021, our exclusive Dual Stern Thrusters give you precise control from a simple twist of a knob. Designed for improved maneuverability while docking, trailering or picking up a rider, you’ll have more control on the water than ever before.

All-new Heated Captain’s Chair


Boldly designed with exposed frame and inset accents, these advanced seats offer many standard features not seen in competitive products like software integration, power motion and heated base and back.

Supra Swell Surf w/ AutoWake


The Supra Swell System delivers tall waves with long pockets and optimal push that are consistent on both sides. Perfect for riders who like to transfer from side to side. Together with our game-changing AutoWake, you’re always in a position to throw the ideal wake or wave.

3,500 lbs Sub-Floor Ballast


The Mega Velocity Ballast System in the SL holds a huge 3,500 lbs sub-floor ballast. The system uses six pumps to reduce fill times and uses advanced ballast sensors to deliver pro-level wakes and waves.

All-New Underwater Transom RGBW Lights


Add stylish function to your SL with a variety of innovative lighting options like all-new underwater transom RGBW, LED docking lights and LED tower docking lights.

JL Audio


In addition to dual 10” M-6 subwoofers, 7.7” bow and 8.8” cockpit speakers, add up to four 8.8” M-6 JL tower speakers to push your premium JL Audio sound to the next level.


This proven powerplant by Indmar is 6.2L of towboating perfection. This 16-valve V8 has maximum low torque is class-leading fuel-efficiency and low emissions.

Raptor Engine 400


For most applications, the standard Raptor by Indmar 400 offers plenty of power, but if you like a little extra torque to get on plane or just prefer to get there faster opt for an additional 60 horsepower and 46 ft-lbs of torque with the Raptor by Indmar 6.2L 450 upgrade.

Raptor Engine 450


There is no substitute for power, and in our industry power equals torque. That’s why Supra® offers the optional ROUSHcharged™ by Indmar 575 6.2L Engine. The ROUSHcharged by Indmar package takes the industry leading Raptor by Indmar engine package and pairs it with the innovation of Roush Performance to crank out 580 hard working ft-lbs of torque.

Raptor Engine 575





Design Your SL

Make your boat truly yours. Take the helm of our customization tool.

Supra SL
Supra SL
Supra SL
Get Inspired

SL Specs

Toggle Spec Measurements
  • 23' 5"

    7.1 m

    overall length

  • 25' 7"

    7.8 m

    length w platform

  • 27' 10"

    8.5 m

    trailer length

  • 17


    seating capacity

  • 102"

    2.6 m


  • 102"

    2.6 m

    width w trailer

  • 73 gals

    276.3 L

    fuel capacity

  • 5,600 lbs

    2,540.1 kg

    boat weight

  • 7,200 lbs

    3,265.9 kg

    boat and trailer weight

  • 2,500 lbs

    1,134 kg

    weight capacity

  • 3,500 lbs

    1,587.6 kg

    standard ballast

  • 400 | 450 | 575

    400 | 450 | 575


Supra reviews

Find out what Supra owners have to say about their towboats.

Supra 450sl

Mark A

Stern thrusters are absolutely amazing!! People slow down when they pass our dock!

Supra...The VIP experience!

Tom M

Germaine Marine = the VIP dealership! A few weeks ago, we took ownership of our first wakesurf boat! A 2021 Supra SL 450!! Just wanted to thank our salesman, Chris Jackson and Germaine’s big kahuna, Jason Robertson for the VIP treatment. Jason flew out to Havasu, spent a ½ day with me on the lake showing me the operations of the Supra, then even took me out to lunch! Also, a shout-out to Josh, the Havasu service tech, who went above and beyond in getting our SL set up for the lake. AMAZING!

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Supra Stoked

Ryan C

This was our second Supra and we couldn't be happier. Amazing brand, amazing tech. Stern Thrusters, Underwater Lighting, we love everything about our SL550!

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Perfection doesn't even describe it

Guillaume G

We upgraded to a 2021 Supra SL from a Moomba. We loved our Moomba and had great family time and made great memories on it. Yet, our Supra just blows us away each time we take it out. Amazing Wake with a ton of push on both sides. Fit and finish = A1. It rides/cruises amazingly. Giant bimini. The driver seat is just WOW. Flip-up seats are also a HUGE plus.

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Great Dealer

Robert C

I live in Bend Oregon and the Dealer is in Portland, 3 hrs away. But our experience was so great, the sales staff and service was above and beyond. I would buy another one in a minute! Total pros. The boat.a SL 400 is so awesome.

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More features and LESS money

Justin J

My new SL has so many amazing options and features throughout the entire boat and the majority of them were STANDARD which is nice compared to the other brands I looked at where it seemed almost every single option was an "upgrade". I really love the crazy loud factory stereo. I only had to add tower speakers to my build. My other two favorites are the power tower and chill tech vinyl. Autowake is a given with Supra that you can't help but love as well! Thank you SUPRA BOATS!!!

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Beautiful Boat

Peter S

2021 Supra is one of the most beautiful boats have previously owned a Master Craft it was a great boat but Supra is far superior.

Supra SL 450

Josh D

Great boat fit and finish was on point. Compared to every other boat in the same class the Supra was leaps and bounds beyond its competitors.



These new Supra's are amazing, the storage space is awesome with the sub floor ballast, and the Chill tech is super comfy. We love the color combos available! We would definitely return to Supra when we purchase a new boat.

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Go Supra


So far very happy with my 2021 450SL been in the water four times this season already.

Superior Engineering

Jeff V

The boat was amazing in every way they thought of everything and engineered it to be functional and long lasting. I bought it for the looks and it’s wave, the solidness of the build was the part that I was blown away with. I bought the boat without ever seeing one and my salesperson Mike LaMacchia was there every step of the way recommending things I didn’t even consider to make it the boat I wanted. Then he was there to execute on the details that we discussed, the process was flawless.

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Loyal Supra Owner

Steve J

This SL 450 is the third new Supra I have purchased in the last 10 years. Each boat has improved remarkably. This boat is amazing ! Would not consider any other boat.

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CMS Is the Gold Standard of What a Dealership Should Be

Kevin F

Awesome service, Knowledgeable staff, and friendly and inviting atmosphere. They make you feel like you are part of their family.


Mark W

We Love our new SA450!! It has the extra space we were looking for. It makes a great wake for surfing and yet can be toned down enough to ski behind. this boat should give our family years of fun on the water.

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John B

Top notch from bow to stern


Jeremy D

I have bought a few bought a few boats and this one has by far been my mist researched and fulfilling buy yet!! Thanks to the folks at The Slalom shop for making this dream a reality. Jeremy Deckert

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2020 SL400

Kevin B

Between the salesman and dealer this has been a great purchasing experience and an awesome product from what I can tell. I haven’t had a chance to get it on the water due to weather and timing of year but we plan on spending many great hours on the water in the future. Will was our salesman and he was very knowledgeable about the product vs other competitors and definitely made us feel comfortable with our upgrade from our old Supra 24ssv to the SL400.

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Dustin S

The comfort and quality of our Supra SL400 just can’t be beat.

Off the chart

Wayne H

Off the chart customer service and experience. Fit and finish superb. Wave is unbelievable. Auto wake technology is superb.

Amazing experience every weekend

Matthew S

This Boat is amazing. The wake is top of the line. The fit and function is better than other boats I have been on. Everyone wants to drive it and everyone wants to try to surf on the huge easy to setup wave. It’s fun for the family and for an adult day out. I would definitely recommend this boat brand to anyone that has an itch to do sports on the water or go out and just listen to music.

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