Jet Ski Cover Sizing Guide and Which Ones To Buy

The 2 worst things for your jet ski are the sun and water. Ironic isn’t it, but it’s true! This is why having a good cover is so important. What size do you need? Will it hold up? Is it even worth it? All those questions and more I answer below.

What Makes For A good Cover:

When buying a PWC cover, there are a few things to keep in mind so you know you’re getting the right one.

1. It should be tight, and if you can, exactly made to fit the exact model of watercraft you have. So tight, that it seems hard to put on when new.
2. The inside of it should have soft materials at the nose to protect the hood from rubbing. If not, use microfiber rags.
3. You want to see vents if you intend to do any towing.
4. Some have quick access to the gas cap or storage, that is a huge plus and something to keep an eye on.
5. Look at ones that point out where the nose and handlebars are, this makes putting it on easier. If not, use a silver sharpie to mark the spots on the outside to make putting it on easier in the future.

What Size Do You Need?

What size jet ski cover you need will vary from “88 inches” up to “140 inches long”. The average length to get is 133 inches long, but going with a longer 140 inch cover will work too if you’re not sure what size to get.

Still not sure on what size to get? It’s better to get one that is too big than one that is not big enough. The main goal is to keep the sun off vessel. Many of the universal covers you get won’t be a perfect fit but do work fine and can even tighten down too.

The Best Covers For Your Jet Skis

The overall best cover you can buy will be the manufacturer’s OEM.

A manufacturer’s OEM cover is made exactly to fit their watercraft and will be the perfect option if you trailer it. You will not find a better fitting material unless you get one custom-made.

When buying a OEM, it’s important you pay attention to the year and model. They usually sell them in groups, like the GTS, GTI, GTI SE, GTI Limited (2011-2019) is one group as they all share the same body. If you’re not sure what year model you have, the last two digits of the VIN will tell you the year. So if the last two digits of the VIN are “19” then you have a 2019 model.

Click here to see OEM Sea-Doo Covers (Amazon Link Ad)

Click here to see OEM Yamaha Covers (Amazon Link Ad)

Click here to see OEM Kawasaki Covers (Amazon Link Ad)

The Next Best jet ski covers

The next best option will be a universal fitting cover, as listed in the next sections.

The universal fitting covers fit most, but they will be more bulky and less fitting. One thing I like to do, especially during winter storage, is put a universal fitting cover on top of my OEM one. OEM covers tend to be more expensive, and having the universal one protects it during the off-season.

1. Classic Accessories Stellex PWC Cover

Check out Classic Accessories Stellex (Amazon Link Ad).

Sizes

Medium fits up to 133 inches

Large fits up to 140 inches

Key Features

• Rear vents help reduce inside moisture, and wind lofting, which is where it blows around (helps to equalize the inside pressure to the outside).
• Storage bag (always nice to have)
• Straps.
• Elastic Bottom Cord to make it easy to put on.
• Excellent weather protection with a good warranty behind it too.
• Zippered access allows you access to the inside of the watercraft on either side.

2. Classic Accessories Lunex RS-1

Check out Classic Accessories Lunex RS-1 (Amazon Link Ad).

Sizes

Medium fits up to 133 inches

Large fits up to 140 inches

Key Features

• Made of a grid-like fabric that cuts down on tearing and breaking.
• UV Protection.
• Elastic cord allows quick installs and makes it more secure on the trailer.
• Venting to cut down on moisture inside of the cover and towing.
• Trailer strap.
• Comes with storage bag (This is useful, trust me).
• Trailerable.
• Waterproof.

3. JETPRO Trailerable Jet Ski Cover

Check out JETPRO Trailerable Jet Ski Cover (Amazon Link Ad).

Sizes

Fits 126″ to 135″ (3 Seater watercraft)

Key Features

• Heavy duty that holds up well against the sun and rain.
• Straps around the bottom makes it perfect at towing on trailer.
• Includes storage bag.
• Rear vent to help reduce moisture and wind lofting.

4. Leader Accessories Polyester Jet Ski Cover

Check out Leader Accessories Polyester Cover (Amazon Link Ad).

Sizes

96 to 105 inches

106 to 115 inches

116 to 135 inches

Key Features

• Water-Repelling
• Resistance to mold and UV light.
• Four-ply double sewn seams and no raw edges.
• Mesh Storage Bag.
• Rear Air Vents allowing air out.
• Elastic cord bottom with easy put-ons.
• Quick adjustable straps.
• Front and rear heavy-duty tie-down loops to make trailering easier.

What Do I Use On My own Sea-Doo Spark?

I go with OEM, but I also throw a universal one on top of it during winter storage.

The OEM has vents at the front to create a vacuum when towing, so it stays tight on it. These vents also allow water in, so that is why I like having the second universal fitting cover over it during long-term storage.

A Jet Ski Cover Is Worth it, Stops fading and More!

A cover is worth it, especially if you keep it where the sun gets to it. The sun will fade the plastic and fiberglass of a jet ski. The sun will also tear up the seats and creates cracks in them. Instead of the hull and body taking the damage, the cover will, and covers are cheaper than replacing the parts the sun destroys.

How Long Do PWC Covers Last?

They will last 3 to 5 years, depending on how much sun and abuse it takes.

It’s more ideal that the covers take the damage than the fiberglass, and thus why we use them. The sun is harsh on plastic and fiberglass, so it’s best you get a covers and replace it when it wears out, or else the watercraft will take the damage.

Small Rodents Like To Eat Your Jet ski, really, they do!

Rodents like to eat plastic and rubber, so keeping the watercraft covered is important. They can crawl in under the seats, make a nest, have a family, and eat the rubber. You would think the rubber and plastic would kill them, but it doesn’t. Rodents also attract snakes, so you can see how this problem needs to be solved. You want to keep the exhaust port and hoses protected. This is why I use two covers, the OEM and a large universal one to go over the rear of the craft.

This is more of an issue if you keep the watercraft out near the woods or on the water, muskrats are a real problem. I’ve also noticed that if you have a dog or cat that hangs around your ski, that most rodents avoid it. I’ve tried rat poison but don’t have much luck with it, but I find simply spraying down your machine jet pump and engine compartment with silicone lubricant spray helps, they don’t seem to like the taste of silicone. You need to let the machine air out a few minutes as those sprays are flammable! This also protects the parts from rust, and a good measure to do anyways, especially if you ride in saltwater.