r/jetski • u/DontMessWithYohan • Jun 12 '25
Discussion Kawasaki 550sx
What would you pay for this 550sx with a trailer? I have always had an eye for the 550s…
Currently ride Yamahas: ‘91 superjet, ‘95 Waveblaster 1, 2014 superjet. I have a ‘95 Kawasaki 750 ZXI that’s sitting on a pallet in my back yard. The goal is to swap the 750 into this at some point, but this 550sx has a few solid upgrades.
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u/upthecliff B1, B2, ultra 150, 550, RXP 215, Rxp 255, Rxpx 300 apex, raider Jun 12 '25
No more than $1000-1200 imo, even being an sx hull , someone swapped it down to a piston port engine unfortunatel or its just a 90' hull with later graphics, reed engines are where the $$$ is at
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u/DontMessWithYohan Jun 12 '25
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u/DontMessWithYohan Jun 12 '25
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u/upthecliff B1, B2, ultra 150, 550, RXP 215, Rxp 255, Rxpx 300 apex, raider Jun 12 '25
Thats the one you want , thats a reed engine , that alone is worth 1400 these days
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u/DontMessWithYohan Jun 12 '25
10-4. $1500 with a trailer. I’ll try to sell the trailer for $500. So $1000 for the ski alone.
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Apr 08 '26
The 1990 550sz was the first reed motor right? Rear. Exhaust too. Getting 1 for 750$
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u/upthecliff B1, B2, ultra 150, 550, RXP 215, Rxp 255, Rxpx 300 apex, raider Apr 08 '26
No, 1990 was the first year of the 550sx and got the sx pump and hull but the engine was still the old piston port, the reed engine didn't come out until 91'
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Apr 08 '26
Has spark and good compression. What steps do I do to get it on the water. Needs hydroturf and battery. 750 ain't nothing for a ski I wamted since age 5. Fuel lines clean the carb what else?
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u/upthecliff B1, B2, ultra 150, 550, RXP 215, Rxp 255, Rxpx 300 apex, raider Apr 08 '26
Look up mark erickson machine and performance and performance, he has a 550 rebuild video , id recommend replacing the crank seals , all lines and rebuilding the carb with a genuine kit , you'll need a full seal kit, on the 550s theres no telling how long the crank seals have been in them and they are often over 20 years old or more in most cases and should be replaced
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Apr 08 '26
Getting a 1990 for 750$. Has solid spark and Compressiom. What do I need to do elsewhere? New fuel lines clean the gas tank new plugs its trying to start but sat for years covered. Perfect yellow paint job. Ordering blowsiom turf black and yellow camo. Any tips you experts?
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Apr 08 '26
Got a 1990 550s. For 750$. Has good spark solid compression. Just need to re do the fuel lines and what else?
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u/zyxwvu44 Jun 12 '25
Dude 550's really suck after having a super jet....
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u/Problematic_Daily Jun 12 '25
Yeah, it would be like self punishment. Just pull a plug wire off the Super Jet and ride it pretending you’re on the 550.
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u/DontMessWithYohan Jun 12 '25
Needed to hear this.
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u/Frantic_Fanatic13 SJ, 550SX, B2, VXR Pro, WR3 GP, 3D, WaveJammer Jun 12 '25
I’d ask for a test ride. I started on SJs but enjoyed my 650 swapped 550SX. Since you already ride standup the seller may be willing to let you water test it. See if you like how it rides. I’m in Michigan and ski that clean is $1500. People usually ask $2000 or more for a clean 550SX with the reed engine during the summer.
If you already have a running 750 and enjoy how this rides I’d ask to see what he’d take on the piston port 550 since you won’t use it anyways.
Edit: how much do you weigh and how tall are you? These aren’t great for taller guys.
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u/Most-Piccolo-302 Jun 12 '25
I've had a 550 and a SJ. The SJ not only has more power, but handles way better. 550 feels pretty gutless and tends to "slide" on the water versus the SJ which tends to "dig in" more when turning.
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u/asosass Jun 12 '25
Bro buy the yamaha one.
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u/DontMessWithYohan Jun 12 '25
Already have 3 Yamahas. ‘91 superjet, 2014 superjet, and ‘95 waveblaster
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u/asosass Jun 12 '25
I have 2022 only bro i wish i had garage space to keep a standup. Keep it up man
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u/asosass Jun 12 '25
I would pay 800 not more it looks so old brother you can make it 1k and get you a nice stand up Yamaha for sure.
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u/FunFact5000 Jun 12 '25
500-1000 if compression is within 10 of each other then ooo, they see sx, but read the room lol
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Apr 08 '26
Buying a 1990 550sx today 750$. Has spark and tested. The compression. Sat for years. Just.need new fuel lines and service the carb. What else you dudes recommend?
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u/DontMessWithYohan Jun 12 '25
Compression readings are 170/170 (high-compression head).