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Below are logo links
to other U.S.
PWC Racing Series.

This page contains specific race class rules that are in addition to regular U.S. WATERCROSS Racing regulations.
 We are offering some one of a kind U.S. Watercross race classes that do not have specific oversight. We will address these race class rules here on this web site.
 The idea is to offer a outlet for owners of the some of the orginal Stand Up PWC (Vintage Ski) to race them in a safe and organized environment.

U.S. Watercross
Updated 6/26/2018

550 Ski Class Rules

550 Ski
Stock Class.

550 or 440 motor in a OEM Hull. Sponsons may be added to front sides and rear bond line of hull.
No internal changes to head, cylinders and cases. You may change color of external surfaces. 
Carburetor may be updated, re-jetted, choke plate removed and after market flame arrestor. 
Must use Stock hood. You may change arm pole, handle bars, grips, throttle, ride plate, intake grate and impeller. 
May use pump stuffier and bore reduction nozzle.
Tray mats and pads may be changed.


550 Ski
Super Stock Class.

OEM Hull 440 or 550. Stock OEM cases. 
May change or modify cylinder, crank, head. 705 cc limit. 
Modify or change intake manifold, reeds, carburetor or carburetors and flame arrestor.
Modify or change exhaust system, water box, water routing, exhaust routing.
Modify or change flywheel, ignition system. 
440 or 550 style pump OEM or Aftermarket. May change intake grate, ride plate, impeller, pump intake track. May modify OEM pump and reduction nozzel.
You may add sponsons to front side and rear bond line of OEM Hull. 
Arm pole, handle bars, throttle, steering sub plate, all may be changed. Aftermarket hood. Changes to tray may be done. Tray mats and pads may be changed

550 Ski
Modified Class.

440 or 550 OEM Hull.
Any type twin cylinder 2- stroke motor up to 850cc. 
You may change the pump, intake grate, ride plate, intake track, drive train, Ignition.
You may modify or change all exhaust components. 
You may change or modify all handling parts. 
You may add sponsons to front side and rear bond line of OEM Hull.
Aftermarket hoods and arm poles may be used. 
Changes to tray may be done. Tray mats and pads may be changed.
You get it, just about anything goes up to 850cc's.


Vintage Ski Class Information.

Vintage Ski Class consists of older Kawasaki Jet Ski's
and older Yamaha Super Jets. 
They have been divided up into the following classes.

X-2 Limited
Bolt on aftermarket parts are allowed, but the motor must be a Kawasaki 650 with stock stroke crankshaft and cylinder with stock-type sleeves (no big bore cylinders). OEM hull, may use sponsons.

X-2 GP
Run whatchu brung. Any motor, any X2 hull.

550 Vintage Ski - full class rules coming
Super Stock

650 Vintage Ski Open 
Yamaha Super Jet = cylinder and cases must be Yamaha 650 with stock stroke crankshaft and cylinder with stock-type sleeves (no big borecylinders).Kawasaki 650SX = cylinder and cases must be Kawasaki 650 OR 750 with stock stroke crankshaft.
Kawasaki JS550 = All "conversion" skis are allowed. If you can fit the motor in a JS hull, you can race it in this class.

750 Vintage Ski Open
All '07 and older Super Jets, all Polaris Octanes, all Kawasaki JS 750sx OEM hulls. 785cc limit. You may use sponsons and/or trim tabs. Modified class rules. All motor modifications, any cylinder and case porting and bolt on's.  It's run whatchu brung.

Note: ALL Vintage classes are "No-Contact" classes.

Please read the -

"No-Contact" Racing addendum for details, as all competitors (regardless of skill level) who enter any of the Vintage classes are expected to abide by the "No-Contact" standards.

For more information on all the Vintage Race Classes e-mail questions to

 U.S. Watercross
No-Contact Racing Rules.


We recognize the fact that, especially with Regional PWC racing, there is a sizable group of competitors (and potential competitors) who want to enjoy the thrill of racing, but want to feel as safe as possible while doing so.

After all, we aren't racing at Regional events to make a living. We all have jobs and families to return to on Monday, right?

Of course, every Great Lakes Watercross racing event includes a pre-race rider’s meeting where safety is stressed, but we wanted to take safety a step further for some of the racing classes by designating certain classes as “No-Contact”.

Now, this certainly does not mean that the other “standard” classes promote contact amongst competitors, not at all.
It means that all “standard” classes will maintain a racing standard similar to what any competitor might experience anywhere else in the country.
As for the racing classes now designated as “No-Contact”, the following standards will be applied:



1)         All competitors are expected to start each race with the mindset

that avoiding all contact with other competitors is a primary goal,

and secondary to nothing else. Just like you are expected to line up

wearing a helmet and a PFD, you are expected to line up with this



2)         All competitors are expected to maintain a safe distance between

other competitors that is large enough to allow them to avoid contact.

This may vary some depending on the skill of each competitor, but the

basic rule is that YOU need to leave enough space for YOU to avoid

contact with THEM.


3)         All competitors are expected to only attempt clean passes with NO

contact. If you aren't 100% convinced that the pass you’re about to

try can be pulled off cleanly, then DO NOT attempt it.


4)         Contact with lapped racers is 100% forbidden. If you’re good

enough to lap another racer, then you’re good enough to pass them

cleanly. Contact with a lapped racer is grounds for immediate

disqualification and further sanctions.


5)         Holeshots are typically the most stressful, congested, and

dangerous part of a race. Therefore, any racer who prefers to delay

their start a bit is welcomed and encouraged to do so. Sometimes

waiting for the other racers to clear the starting gate first before

proceeding will allow less-confident racers to more gradually become

comfortable with the whole process. After all, this is still racing,

and it happens fast. If you prefer to delay your start, please make

sure your holder(s) know this in advance. Also, it is a good idea to

let the racers and holders on either side of you know this as well

during the staging process.


6)         “No-Contact" racing is still NOT a guarantee that contact won’t

happen. It is merely a set of standards to attract like-minded racers

who want to have fun while prioritizing safety. We hope this type of

"mind set" will greatly reduce and maybe even eliminate the chances

of contact happening.
 Spec Class Rules 

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Great Lakes Watercross Racing
Madison, Wisconsin 53714

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