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Waterboxes: Do they create noise or performance?

The waterbox is a rather controversial part, forming strong battlelines between those who love them and those who think they just create noise. So which side are you on?

Here, we try to give you a little more information and let you decide…

What does a waterbox do?

Originally known as a water lock box, a waterbox on a two-stroke serves three main purposes:

  1. keeps water from entering the exhaust system if you tail land your ski or it is ever upside down
  2. provides the correct exhaust back pressure, by interrupting the water being pushed backwards through the exhaust
  3. acts as a muffler, arguably, suppressing noise and making your ski sound “rad” on the water (it can also increase the loudness of your ski depending on what style of waterbox you choose)

On a newer four-stroke, its function is confined to ensuring one-way waterflow and suppressing noise, as they are less sensitive to exhaust back pressure.

A waterbox should increase your overall horsepower, however, some riders do argue that it can reduce top-end and only improves bottom-end acceleration. Others agree that it increases their acceleration without seeing any loss up top.

How does it work?

The waterbox basically works by forcing the air to travel through water before exiting the boat. The exhaust essentially bubbles up and flows out the exit.

If the box is baffled, the baffles cause the box to retain water, and the holes in the baffles control the air flow. Generally, the larger the box means the more noise it muffles.

Do you need to run a waterbox at all?

The short answer is no. However, your ski will be easier to stall if you land tail first or take a tumble, as there is no longer anything stopping water from getting into the exhaust. Plus, your ski will be extremely loud (although that doesn't deter everyone).

What are the differences between a stock and an aftermarket waterbox?

Stock waterboxes are mainly focused on controlling the back pressure. On the other hand, aftermarket waterboxes are less restrictive and have less back pressure, which should result in an overall increase in horsepower.

Aftermarket waterboxes are generally a little louder, which suits some more than others, and depends on where you plan on riding your ski. For example, TDR Waterboxes offer a baffled option, for the recreational rider, which is quieter than the louder power-spray option that is better suited to race skis.

It has been said that you can feel the difference going from a stock waterbox to a TDR, which is ¾ the size of the stock box and feels significantly more responsive.

Overall, it is the sound of an aftermarket waterbox that gets most people over the line, “raspy”, “throaty” and “sounding like a dirt-bike”, you’ll love it or hate it.

Why don’t you see for yourself and pick your side by trying a TDR Waterbox. Every box is made to order in the US of A.

Want to get the most out of your waterbox? Hear what Larry "the Ripper" Rippenkroeger has to say about how the waterbox affects start line performance in his interview on "Ride by Day, Wrench by Night".

Waterboxes: Do they create noise or performance?

SuperTrapp Waterboxes & Kerker Pipe Advertisement

The waterbox is a rather controversial part, forming strong battlelines between those who love them and those who think they just create noise. So which side are you on?

Here, we try to give you a little more information and let you decide…

What does a waterbox do?

Originally known as a water lock box, a waterbox on a two-stroke serves three main purposes:

  1. keeps water from entering the exhaust system if you tail land your ski or it is ever upside down
  2. provides the correct exhaust back pressure, by interrupting the water being pushed backwards through the exhaust
  3. acts as a muffler, arguably, suppressing noise and making your ski sound “rad” on the water (it can also increase the loudness of your ski depending on what style of waterbox you choose)

On a newer four-stroke, its function is confined to ensuring one-way waterflow and suppressing noise, as they are less sensitive to exhaust back pressure.

A waterbox should increase your overall horsepower, however, some riders do argue that it can reduce top-end and only improves bottom-end acceleration. Others agree that it increases their acceleration without seeing any loss up top.

How does it work?

The waterbox basically works by forcing the air to travel through water before exiting the boat. The exhaust essentially bubbles up and flows out the exit.

If the box is baffled, the baffles cause the box to retain water, and the holes in the baffles control the air flow. Generally, the larger the box means the more noise it muffles.

Do you need to run a waterbox at all?

The short answer is no. However, your ski will be easier to stall if you land tail first or take a tumble, as there is no longer anything stopping water from getting into the exhaust. Plus, your ski will be extremely loud (although that doesn't deter everyone).

What are the differences between a stock and an aftermarket waterbox?

Stock waterboxes are mainly focused on controlling the back pressure. On the other hand, aftermarket waterboxes are less restrictive and have less back pressure, which should result in an overall increase in horsepower.

Aftermarket waterboxes are generally a little louder, which suits some more than others, and depends on where you plan on riding your ski. For example, TDR Waterboxes offer a baffled option, for the recreational rider, which is quieter than the louder power-spray option that is better suited to race skis.

It has been said that you can feel the difference going from a stock waterbox to a TDR, which is ¾ the size of the stock box and feels significantly more responsive.

Overall, it is the sound of an aftermarket waterbox that gets most people over the line, “raspy”, “throaty” and “sounding like a dirt-bike”, you’ll love it or hate it.

Why don’t you see for yourself and pick your side by trying a TDR Waterbox. Every box is made to order in the US of A.

Want to get the most out of your waterbox? Hear what Larry "the Ripper" Rippenkroeger has to say about how the waterbox affects start line performance in his interview on "Ride by Day, Wrench by Night".

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