ijsba_original

IJSBA is pleased to release the draft displacement guide which will appear in the 2016 Rule Book in the appendix section.  These displacement guidelines have not been changed from 2015 but are now more organized and easier to access.  Please send any questions, comments, or requests for clarification to IJSBA by emailing: info@www.ijsba.com.

 

PWC Competition Displacement Guide

Runabout Categories

As furnished by the manufacturer to be homologated:

785cc if powered by a two stroke engine in 800cc classes

1100cc if powered by a naturally aspirated four stroke engine in 800cc classes

2000cc if powered by a four stroke engine in classes designated above 800cc or designated as a Four Stroke Class, or as a default class

 

Runabout Stock

800cc if powered by a two stroke engine for 800 classes.

1100cc if powered by a naturally aspirated four stroke engine for 800 classes.

2000cc if powered by a four stroke engine (categories may distinguish between naturally aspirated and forced induction).

 

Runabout Rec Lites

All units must be naturally aspirated and come, from the manufacturer, at a price point of less than $8,500USD, MSRP, and must conform to the weight limits below.

735cc if powered by a two stroke engine (organizers are not required to offer a two stroke option).

1000cc if powered by a naturally aspirated four stroke engine.

1100cc if powered by a naturally aspirated four stroke engine when the unit weighs a minimum of 750 lbs as furnished by the manufacturer.

 

Runabout Limited

800cc if powered by a two stroke engine for 800 classes.

1100cc if powered by a naturally aspirated four stroke engine for 800 classes.

2000cc if powered by a four stroke engine (categories may distinguish between naturally aspirated and forced induction).

 

Runabout Open (Superstock)

800cc if powered by a two stroke engine for 800 classes.

1100cc if powered by a naturally aspirated four stroke engine for 800 classes.

2000cc if powered by a four stroke engine (categories may distinguish between naturally aspirated and forced induction).

 

Ski Categories

As furnished by the manufacturer to be homologated:

785cc if powered by a two stroke engine

1100cc if powered by a naturally aspirated four stroke engine

800cc if powered by a four stroke engine with forced induction

 

Ski Lites

All units must be naturally aspirated and come, from the manufacturer, producing 85 horsepower or less.

850cc if powered by a two stroke engine

1100cc if powered by a naturally aspirated four stroke engine

 

Ski Limited

850cc if powered by a two stroke engine

1100cc if powered by a naturally aspirated four stroke engine

800cc if powered by a four stroke engine with forced induction

 

Ski Modified (GP)

1300cc if powered by a two stroke engine

1500cc if powered by a naturally aspirated four stroke engine

900cc if powered by a four stroke engine with forced induction

 

Freestyle

900 CC is the default displacement for Amateur Classes

1200cc is the default displacement for Pro Classes

 

Sport Classes

Sport Spec

OEM displacement plus 1.0mm overbore for two stroke engines, no other engines are permitted

Sport Modified/GP

1300cc if powered by a two stroke engine

1500cc if powered by a naturally aspirated four stroke engine

900cc if powered by a four stroke engine with forced induction

 

Vintage Classes

Vintage Ski

550CC by default.  May be restricted by displacement (i.e Vintage Ski 550, Vintage Ski 650, etc.)

Vintage X2

800CC