IJSBA is pleased to release the final competition class list for the 2017 Blowsion World Finals.  Competitors will notice that these classes mirror the direction that IJSBA had announced during the 2016 World Finals and that has been refined and clarified through the updates in 2017.  [Edit: Pro Am Runabout 1100 Superstock was accidentally labeled as a 1000cc class.  This has been corrected]

The classes have been slightly streamlined to show a direction where two stroke and four stroke Ski will take two different directions in the near future.  Speed control concerns are also part of IJSBA's future and we intend to introduce a plan for this to be an integral part of our competition program.

For 2017, all competitors, with previous legal watercraft should find suitable categories for racing.  Ski competitors have classes with and without the new Kawasaki SX-R.  Smaller runabouts, such as the Yamaha EX and Sea-Doo spark now have more opportunities.  Runabout Naturally Aspirated and Runabout Spec competitors have a final opportunity to compete.

Please see the class list below.  We have notations that should help understand the classes and their limitations.  Please email info@ijsba.com if you have any questions.

 

Pro Classes

Pro Ski Modified (The 2017 Kawasaki SX-R is allowed with an OEM hull only.  Pro Am GP legal Ski may participate)

Pro Runabout Open (Last year for this class in this format)

Pro Freestyle  (Note: tethers, cables, ropes, or other devices that attach the competitor to the watercraft are no longer permitted).

Pro Am Classes

GP Ski  (2017 Kawasaki SX-R is not permitted in this class.  All watercraft must strictly adhere to hull dimension limits passed in 2016, 1300 CC Naturally Aspirated Limit, up to 1100 cc Forced Induction allowed with IJSBA Approved Boost Regulator)

GP Runabout 

Runabout Stock

Runabout 1100 Superstock  (800cc Maximum for Two Stroke, 1100cc Maximum for Four Stroke)

Ski Stock (2017 Kawasaki SX-R is permitted without a restrictor plate)

Womens’ Ski (2017 Kawasaki SX-R is permitted in this class to Stock Class specifications only.  Two Stroke powered Ski are permitted to Limited Class specifications.

Ski Lites

Runabout Limited

Endurance Runabout Open

Expert Classes

Expert Ski Modified (2017 Kawasaki SX-R allowed. Amateur Ski GP legal Ski may participate).

Expert Ski Stock (2017 Kawasaki SX-R allowed.)

Expert Runabout Open

Expert Veteran’s Runabout

Amateur Classes

Amateur Freestyle  (Note: tethers, cables, ropes, or other devices that attach the competitor to the watercraft are no longer permitted).

Amateur Ski GP (2017 Kawasaki SX-R not permitted.  1100cc forced induction with IJSBA approved boost control only, 1300cc maximum naturally aspirated displacement maximum two stroke.  1100cc maximum four stroke displacement.  All watercraft must strictly adhere to hull dimension limits passed in 2016)

Amateur Ski Lites (2 Stroke Only)

Amateur Veteran’s Ski Stock (Two Stroke Limited Legal Ski allowed- this year only).

Amateur Veterans Ski GP  (2017 Kawasaki SX-R not permitted.  1100cc forced induction with IJSBA approved boost control only, 1300cc maximum naturally aspirated displacement maximum two stroke.  1100cc maximum four stroke displacement.  All watercraft must strictly adhere to hull dimension limits passed in 2016)

Amateur Runabout 1100 Superstock (See Open Class Rules, 800 CC Limit For Two Stroke)

Amateur Runabout 1100 Limited (Up To 1100cc Normally Aspirated Four Stroke, 800 CC limit for Two Stroke)

Amateur Runabout 1100 Stock (Four Stroke Powered Runabout Only: Sea-Doo Spark; Yamaha EX)

Amateur Runabout Rec Lites

Amateur Women’s Ski Lites  (All participants who hold an Expert License, All participants who have had a World Finals podium finish in Novice Women’s Ski, and participants who have participated in Pro Am Women’s Ski must petition IJSBA for eligibility in this class).

Novice Classes

Novice Ski Stock (2017 Kawasaki SX-R Allowed)

Novice Ski Limited

Novice Runabout Stock

Novice Runabout Limited

Junior Classes

Junior Ski 10-12 Stock (2017 Kawasaki SX-R Allowed only with IJSBA approved restrictor plate)

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

Junior Ski 13-15 Stock (2017 Kawasaki SX-R Allowed only with IJSBA approved restrictor plate)

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

Junior Ski 13-15 Limited  (2017 Kawasaki SX-R Allowed only with IJSBA approved restrictor plate)

 

Other Classes Open To All Skill Levels

Runabout Spec (Pro Riders must petition for eligibility)

Runabout Naturally Aspirated (1300 CC Two Stroke to Limited Class specifications.  1800cc Four Stroke to Stock Class specifications).

Sport GP

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 GP  (2017 Kawasaki SX-R is not allowed in this class.  No displacement above 1300cc.  Forced induction Ski are limited to 950cc)

Master’s Ski Stock (2017 Kawasaki SX-R allowed to Stock Class specifications Only, Two Stroke Ski allowed to Limited Class specifications- this year only)

Vintage Ski (Two Moto’s- Combined Score for Overall)

Vintage X2 (Two Moto’s- Combined Score for Overall)

Women’s Runabout (Limited Class Rules For Two Stoke, Stock Rules For Four Stroke Plus Aftermarket Seat Allowance)

Ski Endurance  Sprint (2017 Kawasaki SX-R Allowed to Stock Class Specifications)

Slalom

Ski Modified

Runabout Open

Sport GP

Four Stroke Ski Stock