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Yamaha Superjet Review: The New 4-Stroke Superjet! [Video]

Yamaha Superjet Review: The New 4-Stroke Superjet! [Video]

Superjet Review – this is the post that Yamaha fans have been waiting for, for a very long time.

And finally, it’s arrived! To the delight of many fans, Yamaha unveiled the brand new 4-stroke Superjet.

If you want to learn all about this amazing new standup, this post is for you. We’ve done the research and compiled all the information under one roof: specs, test videos, pictures, and more!

We’ll also compare the new 4-stroke Superjet to the competitor Kawasaki SX-R 1500 and Krash stand-up PWCs.

Without further ado, let’s start our 2021 Yamaha Superjet review!

Yamaha Superjet Review


Are you wondering what the key features are of the new 4-stroke Superjet? We’ve compiled all of them in a nutshell:

  • All-new, hull and deck design from scratch
  • Minimalist black and white graphics
  • TR-1 Yamaha Marine engine (4-stroke, 3-cylinder, 1049cc)
  • Aftermarket-style adjustable handle pole and handlebar
  • Dimensions: Length: 95.7”, Beam: 30”, height: 31.1”
  • Curb weight: 409 pounds
  • Fuel capacity: 5 gallons
  • Adjustable steering nozzle
  • Digital gauge
  • Legal in all states without a racing license!
  • MSRP: $9,499
Let’s move on and drill into the details!

Yamaha Superjet Hull and Deck Design

The 2021 Superjet hull and deck were completely redesigned from scratch. Yamaha’s engineers wanted to keep the new hull design and riding experience close to its predecessor.

It safe to say that they succeeded to a great extent! However, the size of the hull is slightly larger to accommodate the bigger, 4-stroke engine.

The top deck features a wide and well-padded tray with a unique little addition, labeled the “integrated reboarding holder.” Simply put, it’s a small nook in the center of the tray that helps you get started from deep water.

The hull was designed to be stable while offering the same sharp turns as its older brother. Beyond the abilities, the black and white design of the 2021 Superjet is minimalist and clean, but exciting at the same time:

Yamaha Superjet Dimensions

In a nutshell, the 2021 Yamaha Superjet dimensions are:

  • Length: 95.7 inches
  • Beam: 30 inches
  • Height: 31.1 inches
This means that the new innovative hull is 3.2 inches wider, 5.1 inches taller and 7.5 inches longer compared to the 2-stroke Superjet.

Although this is a noticeable increase in size, the 2021 Yamaha Superjet is still significantly smaller than its competitor, the Kawasaki SX-R 1500, which is 8.8 inches longer.

Let’s compare these two models, side-by-side:Beyond the SX-R 1500, we also have to mention the Krash Freestyle PWCs, as these models are also available in the US.

For a better comparison, we’ve gathered these models under one roof. In this visual, you can compare the following stand-up PWCs side-by-side:

  • Krash Footrocket
  • 2-stroke Yamaha Superjet (2020)
  • 4-stroke Yamaha Superjet (2021)
  • Kawasaki SX-R 1500
And finally, we’ve compared the new 4-stroke Superjet to the Krash Footrocket. As all Krash PWCs are still powered with 2-stroke engines, these crafts are still much smaller and lighter compared to their competitor 4-stroke standups.

You can also compare the dimensions of these models, side-by-side in this chart:

BrandModelLength (")Width(")Curb Weight (lbs)
KrashFoot rocket Pro8226303
Krash50 CAL8230.5338
KrashFoot rocket8226338
Yam.4-stroke Superjet95.730409
Kaw.SX-R 1500104.530.1551

Yamaha Superjet Weight

The net weight of the 2021 Yamaha Superjet is 375 pounds, while its curb weight is no less than 409 pounds. This means the new 4-stroke Superjet is 69 pounds heavier than its outgoing predecessor. On the other hand, its weight is still 142 pounds less than the Kawasaki SX-R 1500.


Not just its hull, but the features of the 2021 Yamaha Superjet have also been completely redesigned.

It comes with aftermarket-style handlebars and an adjustable handle pole, which can be extended up to 2 inches in length.

The new Superjet features a bigger, 5-gallon fuel tank. This extended fuel capacity combined with the low fuel consumption of the 4-stroke engine results in a much longer riding time.

Refueling from cans is always a pain, so at last, we can say that this bigger tank is a convenience accessory!

You can also find a small digital gauge on the top deck, which shows the riding mode and the fuel level.

As we’ve discussed, you can find a reboarding grip integrated onto the center of the tray, which is a great help during deep-water starts.

But one of the most remarkable features of the 2021 Yamaha Superjet is the L-MODE. Simply put, by using this mode you can cut the performance of the craft to 85%, which results in a limited 40 mph top speed.

Moreover, the turn angle of the nozzle is adjustable as well, which means you can set your turn angle to either 16 or 19 degrees.

These new features make the 2021 Superjet a great choice for beginners. (If you are new to stand-ups, don’t miss our step-by-step beginners guide!)

Let’s move on to the most important part of the craft – the engine!

Yamaha Superjet Engine and Pump

Yamaha Superjet Engine

The 2021 Yamaha Superjet engine is the award-winning, 4-stroke, TR-1 Yamaha marine powerplant. This lightweight 1049cc, 3-cylinder engine features electric fuel injection (EFI) and the industry-standard open-loop cooling system.

You can find the same engine in the Yamaha’s entry lever WaveRunners, the EX series as well as some VX models.

Here are the features and key specs of the 4-stroke Superjet engine in one list:

  • TR-1 Yamaha Marine engine
  • 4-stroke, 3-cylinder
  • Displacement: 1049cc
  • Performance: 100 HP
  • One-piece cylinder and crankcase assembly
  • Dry sump lubrication (features 2 oil pumps)
  • Open-loop cooling system
  • Controlled by YEMS – Yamaha Engine Management System
  • Electronically controlled, variable ignition timing
  • Flip-over detection: engine stops if the hull turns over
  • L-MODE for beginners: cuts the performance to 85%
Are you wondering what the advantages of this new 4-stroke power source are compared to the aged 2-stroke engine? Here are the most important factors:
  • Higher reliability and durability
  • No “carb work”!
  • Lower fuel consumption
  • Less emission and noise
  • No smoke
  • No hassle with the 2-stroke oil
  • More power
  • Legal in all states – no racing license needed


This wouldn’t be a complete 2021 Yamaha Superjet review without mentioning the pump.

Just like its engine, the jet pump of the 4-stroke Superjet also comes from the EX Series. The 144mm, 2-piece jet pump is manufactured with Yamaha’s custom YDC30 corrosion protection. Thanks to the adjustable nozzle you can expect to have better stability. You can set the turn angle of the nozzle to either 16 or 19 degrees, based on your needs.

The pump also features a water intake filter. As the cooling water comes from the pump, there is always the risk that it can force debris into the system. If this happens, the debris can clog the hoses, leaving the engine without proper cooling. To prevent this issue, Yamaha’s engineers have designed a filter for the cooling system’s intake.

Yamaha Superjet Fuel Consumption

Although test numbers are not yet available, we can expect the 4-stroke Superjet fuel consumption to be around 6-8 gallons/hour at WOT. This assumption is based on the Yamaha EX series test numbers (7.9 gal/hour at WOT). These models are powered with the same engine and pump, but the EX WaveRunners are significantly heavier, as they weigh around 600 pounds.

Yamaha Superjet Horsepower

How much HP Does a 2021 Yamaha Superjet Have?

The 2021 Yamaha Superjet has 100HP, as it’s powered with the TR-1 Yamaha Marine engine. This means that this powerplant delivers 27 HP more than the 2-stroke engine. Although it’s an amazing increase in performance, the new 4-stroke Superjet still has less HP compared to the competitor stand-up PWCs. In comparison, the Kawasaki SX-R 1500 offers 160HP, while Krash PWCs come with the KV997 2-stroke engine, which puts out 130 HP.

Yamaha Superjet Top Speed

How Fast Does a 2021 Yamaha Superjet Go?

Based on real-world tests, the 2021 Yamaha Superjet’s top speed is around 54 mph. This means the new model is nearly 10 mph faster than its predecessor! Using L-MODE, you can reduce the top speed of the 4-stroke Superjet to 40 miles per hour. In contrast, the SX-R 1500 can reach 62 mph.

You can see a top speed test along with a lot more useful info on the new Yamaha stand-up in this video:

Riding Experience

If you prefer an athletic riding experience but are looking for a 4-stroke stand-up PWC without any compromises, the 2021 Yamaha Superjet is for you. It’s nimble, sporty, and very fun to ride. If you need a new craft for closed-course racing or just to have some fun on the weekends, the new 4-stroke Superjet won’t disappoint you.

At the same time, it’s still more stable compared to vintage 2-stroke jet skis. They are not just harder to reboard, but their carburetors can cause a lot of headaches as well.

2-stroke standups offer a different riding experience, there’s no question. But let’s face it, working on the engine before and after every ride is not for everybody. If you want to ride your craft instead of constantly working on it, you better choose the 4-stroke Superjet.

Let’s see what this amazing craft can do on the water!

No License Needed

And don’t forget that one of the main advantages of the new 2021 Superjet is that it’s powered with a 4-stroke engine, which means it’s legal in all states without a racing license!

Therefore, this new stand-up will be suitable for a larger audience.

If you always wanted a Superjet, but you were afraid of the hassle of the 2-stroke engine, this will no longer be an excuse!

Yamaha Superjet Specs

As a summary, let’s see the 2021 Yamaha Superjet specs in one list:

  • Engine Type: TR-1 (4-stroke, 3-cylinder)
  • Displacement: 1049cc
  • Performance: 100 HP
  • Cooling: Open-loop
  • Top Speed: 54 mph
  • Length: 95.7 inches
  • Beam: 30 inches
  • Height: 31.1 inches
  • Dry weight: 375 pounds
  • Curb weight: 409 pounds
  • Impeller: stainless steel, 3-blade
  • Fuel Capacity: 5 gallons
  • Made in Japan
  • MSRP: $9,499


The first standup Yamaha hit the market in 1990, and quickly became a fan favorite. It’s safe to say that the new 4-stroke Yamaha Superjet proudly carries on the legacy!

Although its weight and dimensions have all been increased, the new hull is still nimble and fun to ride. Compared to the Kawasaki SX-R 1500, the 4-stroke Superjet remains a significantly smaller and agile stand-up PWC.

Powered with the fuel-efficient, environmentally friendly TR-1 engine it has become attractive and accessible to even more riders. 2-stroke PWCs are banned from more and more areas, and with good reason.

But if you choose the new Yamaha standup, you don’t have to be afraid of these restrictions. And best of all, you can forget the hassle with the carburetors and 2-stroke oil – forever!

This is our 2021 Superjet review. We hope you like it!