IJSBA is pleased to release the expected competition classes at the 2016 quakysense World Finals.  Armed with a new set of rules and a slightly leaner set of classes, IJSBA is introducing a new path marching forward from our 35th Anniversary.  Classes have been adjusted to create two distinct types of opportunities for competitors: high speed extreme categories, and economy minded hobbyist categories.  The classes are listed below, please email info@ijsba.com if you have any questions.


NOTES: All Classes Use 2016 rules except Ski Stock which will follow 2015 Rules. Normally Aspirated Runabout Stock will use 2016 Stock Rules for Four Stroke PWC and Spec Rules for Two Stroke PWC).

Pro Classes

Pro Ski Modified

Pro Runabout Open

Pro Freestyle


Pro Am Classes

GP Ski (New Class Requires Slalom And Closed Course Combined)

GP Runabout  (New Class Requires Slalom And Closed Course Combined)

Runabout Stock

Runabout 1000 Superstock

Ski Stock (Last Year of This Format)

Women’s Ski Limited

Ski Lites

Runabout Limited

Pro Am Ski Limited

Runabout Spec (Potential last year)

Endurance Runabout Open


Expert Classes

Expert Ski Limited

Expert Runabout Limited

Expert Runabout Open

Expert Veteran’s Runabout


Amateur Classes

Amateur Freestyle

Amateur Ski Open

Amateur Runabout Spec

Amateur Ski Lites (2 Stroke Only)

Amateur Veteran’s Ski Limited

Amateur Veterans Ski Modified

Amateur Runabout 1000 Superstock (See Open Class Rules, 800 CC Limit For Two Stroke)

Amateur Runabout 800 Limited (Up To 1100cc Normally Aspirated Four Stroke to Stock Configuration Allowed)

Runabout Naturally Aspirated Stock

Runabout Naturally Aspirated Limited

Runabout Naturally Open

Amateur Runabout Rec Lites


Novice Classes Novice Ski Stock (Last year in this format)

Novice Ski Limited

Novice Runabout Stock

Novice Runabout Limited

Novice Women’s Ski Limited


Junior Classes Junior Ski 10-12 Stock (Last year in this format)

Junior Ski 10-12 Lites (Stock Rules 2 Stroke Only)

Junior Ski 13-15 Stock (Last year in this format)

Junior Ski 13-15 Lites (Stock Rules 2 Stroke Only)

Junior Ski 13-15 Limited


Other Classes Open To All Skill Levels

Sport GP

Women’s Runabout (Limited Class Rules For Two Stoke, Spec Class Rules For Four Stroke Plus Aftermarket Seat Allowance Per Limited Rules- Will be Stock Class for Four Stroke in 2017)

Sport Spec
All Skill Level, Pro Ranked Competitors Must Petition To Participate

Classic Ski Two Stroke Limited  (Limited Class Rules, Two Stroke Only)

Master’s Ski Open

Master’s Ski Stock (Last year in this format)

Vintage Ski (Two Motos- Combined Score For Overall.)

Vintage X2 (Two Motos- Combined Score For Overall. )