Starting at $76,440

It’s not small. It’s not huge. Know what that makes it? Versatile. Pretty and powerful, the Moomba Kaiyen pulls 3,700 lbs of ballast, punching well above its weight class.

  • Length

    21' 5"

  • Seating

    15 people

  • Engine


Make it your own

Boat Features

Every Moomba is hand-built in Maryville, Tennessee with an industry-leading set of standards and a stable of premium options at your fingertips. Discover more about what makes the Kaiyen special below.

Kaiyen profile
Kaiyen 3/4
Kaiyen interior
Kaiyen top

7 inch Touchscreen

A stylish dash design with 7” touchscreen display puts even more within reach from the driver’s seat—including convenient wireless phone charging pad. The touchscreen is offset to give the driver unobstructed views and offers one-touch toggling between home, control, AutoWake® and Navigation display views.

transom walk-across

Transom Walk-through w/ step down

Our intuitive transom walk-across with step-down makes moving between the cabin and swim deck simple, safe and smart. Not to mention easier access to that action.

captain's chair

Flip-up Seat Bolster & Adjustable Driver Seat

Being a captain has its rewards. Like a sturdy flip-up bolster with an optional adjustable seat to angle on all the action. In the Kaiyen worries are left dockside. Because you can’t deliver stoke unless you can see it properly.

A3 Tower

A3 Tower

The Moomba® A3 Tower is specifically designed to add style and function. It features easy fold assist, bimini and board rack options so you can quickly grab a board when it’s time to ride and safely stow. An optional tower audio system makes the A3 tower a #1 choice.


Endless Customization

Kaiyen is your personal playground of customization. There are endless color, feature and performance combinations, patterns, choices and details to choose from. The question is, how will you make your Moomba your own?

gatorstep flooring

GatorStep Flooring

Don’t worry about slipping or sticky messes with GatorStep. It’s the perfect easy-to-clean non-skid deck package that makes managing your interior a breeze. Available in two colors, it’s your partner in keeping your Moomba perfectly clean.

Swipe Through Features

family on a boat



The Kaiyen is a monster on the water, delivering a near metric-ton of features and performance in a package that most can handle. No matter if you’re skiing, boarding, surfing, or just relaxing, Kaiyen is ready to perform.

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wakeboard jumping


3,700 lbs Ballast

Kaiyen delivers big-time action surf and wake action with 3,700 lbs of beautiful G6 ballast. The G6 system uses six pumps to drastically reduce fill times to get your wake and surf sessions going even faster.

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Kaiyen on water


Wetsounds Audio

Get closer to your favorite music with the Wetsounds Premium Package which includes bow speakers, sub, 10" tower speakers, and syn amps.

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Triton Board Racks

Triton Vertical board racks securely stow your gear while maximizing available space in the boat. Keep your boards out of the way and easy to access with the award-winning racks.

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wakeboarder on stern



AutoWake with Multi-Sensor Technology features five patented systems that work together to automatically and continuously manage the position of your hull for a precise and repeatable wake for every rider, in every water condition.

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wakesurfer jumping


Flow 2

Moomba’s Flow 2.0 Surf System helps deliver the long pockets and clean lips every wakesurfer craves. Contoured plates help reposition the surf-optimized hull in the water creating massive, lengthy surf waves from the swim platform to the back of the barrel.

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Kaiyen inspiration

Express Yourself

Build Your Perfect Kaiyen

Pick your gel. Pick your options. And bask in the knowledge that you made a brand new boat that’s unique to you.

Wake & Surf Systems

Ride The Wave

Whether you’re behind the wheel or behind the boat, our wake and surf systems are engineered to take the guesswork out of setting your boat up for big, clean wakes and waves.




Kaiyen Engines

The 6.2L Ford® Raptor by Indmar powerplant comes standard and delivers plenty of kick. It only gets better from there.

Moomba Reviews

Hear it straight from the owners’ fingers.

We think our boats are awesome. We built them. But we think you’ll be happy to hear our owners feel the same way.

Forrest J Jan 12, 2021

Excellent wake boat with premium features for budget price.

Just bought a Moomba Kaiyen and we couldn’t be more pleased. It’s our first wakeboat and we looked at many brands, but we kept coming back to the Moomba. Glad we did.

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Anonymous Jan 29, 2021

Kaiyen Love...

Great platform for family fun!

Aaron M Jan 07, 2021

Great boat and value

Overall impressed with my purchase. The team at Martin Motorsports Edmonton West were amazing. I met most of the staff while going through the purchase process.

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Peter R Oct 21, 2020

Moomba Kaiyen 2020 is Amazing

Traded in my 2015 Mondo for the 2020 Kaiyen - this is an amazing boat that is designed well and features & performance are well above its price point. The surf wake is amazing - fits 15 - onboard ballast and seating & sound best in class. No regrets - only wish I bought it sooner. I cant wait to get it on the water in '21.

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James R Sep 14, 2020

2020 Moomba Kaiyen

Perfect first wake boat for this family of 4 beginner/intermediate surfers, boarders, and (of course) tubers! It has plenty of room for guests and plenty of ballast to make a good wave with or without them. The boat looks great and gets a lot of positive comments from on-lookers - love the Black Cherry Metallic Gel Coat!! Pro-Wake Watersports in Indiana has gone the extra mile to make sure we are satisfied with our purchase and that the whole family is enjoying it!

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Joshua V Sep 13, 2020

Customer support

Ordered a new Moomba Kaiyen through my local dealer. Aside from loving the boat what impressed me was the customer support at Moomba/skiers choice! They were accessible by phone call or email to me, the buyer and answered all my questions without telling me to just ask my dealer! Wouldn’t hesitate to purchase another boat from Skiers Choice in the future, great products and great customer support!

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Brian S Sep 10, 2020

Love our Moomba Kayien

Moomba Boats are by far the best boat for the money on the market! Great fit and finish, excellent performance and technology. Very happy and will continue to purchase Moomba Boats. Also, super happy with our local dealer Club Royale Boat Sales here in Waterford, MI. They are great!

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Bruce C Aug 28, 2020

Fantastic First Boat - Loving our Moomba Kaiyen

We are making memories with our Moomba Kaiyen and loving it. It is a stunning boat and was great value compared to other brands we looked at. Our kids are got up on ski, wakeboard and started surfing this summer. It puts out a very nice wave and is also a fantastic family boat.

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Jeffrey P Aug 25, 2020

Moomba Kaiyen

Boat is sweet. Some room for improvement or refinement. Step pad needs to be same size as walk through. Some backlight to gauges. Better latches On rear hatches.

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Abraham P Aug 07, 2020

The best bang for your buck!

Just drive one to find out.

Anonymous Aug 01, 2020

Moomba Kaiyen

The new Moomba Kaiyen has been a fantastic boat for me and my wife. We are extremely happy with the purchase and glad we went with Moomba.

Nicklas F Jul 23, 2020

Moomba Kaiyen

Our family have had so much fun with our boat, it's an activity that everyone agrees on when we want to do something. Expensive to own and buy a boat, but memories that you're are creating are worth more than having a check book full of cash.

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Mike D Jul 20, 2020

Great Boat

Really love my Moomba Kayien. This boat does it all wake boarding or Surfing the wakes are awesome!

Anonymous Jul 18, 2020

Great service

Great customer service, salesman seem To legitimately know what they are talking about, no bs

Jared S Jul 16, 2020

Best value for the value

I shopped around many of the "value" brands when looking for the right boat. Moomba simply gives you more. From the advance technology of the autowake system, combined with the customization of the autoflow and smart plate tab system, you have endless flexibility to finetune the wave or wake you want. Top that with the fit and finishes alongside some premium options available for each model, it was an easy choice.

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Colton W Jul 09, 2020

ROMOBOCO your one stop shop for everything

We had been looking everywhere to try and find the perfect boat with no luck. We spent about 45 minutes in ROMO and the salesperson Hez, listened to what we were looking for and showed us exactly the boats in our price range and preference. No pushing just suggestions which was exactly what we needed as first time boat buyers on our own. Not to mention the amount of help and guidance after we had bought the boat. I know if I have any questions or concerns I can reach out to the ROMO fam.

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Ken M Jun 27, 2020

Moomba is the Best!

Fantastic boat and second to none dealer... Bay Maine Trenton, Ontario!

Matt M Jun 18, 2020

Moomba Kaiyen, BEST BOAT EVER!

I only have positive things to say about my Moomba. I look forward to every weekend to get out onto the water and surf it’s great wave. Cameron was the best salesmen, never making me feel any pressure about a sale. He gave me an education about the different boats so I could make an educated decision on what was best for myself and my family. I know I can refer my friends to him because he won’t disappoint me. South Town Water Sports will be where I go if I’m ever in need of another boat.

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Derrick V May 21, 2020

Great purchase

Very excited about the new Kaiyen. The boat has a great trim level for Moomba with many of the little options from Supra that add convenience. We are excited to understand all the functionality. It would be better to have a easier way to learn all the capabilities besides trial and error. Very excited for this summer and all the memories.

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Randall H May 04, 2020

Fun for the Whole Family

Moomba's build quality and on-water performance makes our Kaiyen a floating platform for family fun!

Boat Highlights

The Kaiyen Short List

Here’s a high-level overview of the Kaiyen’s standard specifications. For more information, download our full spec sheet below.

  • overall length icon

    overall length

    21' 5" (6.5 m)

  • length w platform icon

    length w platform

    23' 5" (7.1 m)

  • trailer length icon

    trailer length

    25' 2" (7.7 m)

  • seating capacity icon

    seating capacity

    15 people (15 people)

  • width icon


    102" (2.6 m)

  • width w trailer icon

    width w trailer

    102" (2.6 m)

  • fuel capacity icon

    fuel capacity

    45 gals (170.3 L)

  • boat weight icon

    boat weight

    4,500 lbs (2,041.2 kg)

  • boat and trailer weight icon

    boat and trailer weight

    5,700 lbs (2,585.5 kg)

  • weight capacity icon

    weight capacity

    2,100 lbs (952.5 kg)

  • standard ballast icon

    standard ballast

    3,700 lbs (1,678.3 kg)

  • engine icon


    400 (400)