500	650	144mm Standard	144mm Slimline
144mm Super Slimline	144mm Swirl	155mm Super Slimline	155mm Swirl

Skat Trak Impellers
   Skat Trak’s Super Slim Line and Swirl impellers produce an increase in top speed of up to 2 mph on some watercraft. These are two completely different impeller designs, made for specific applications with different geometry from each other and from any other impeller ever produced. Let Skat-Trak give you the best possible acceleration and top speed the professionals get race after race.

   When choosing an impeller, you need to determine the classification your boat falls into, and also any other factors that may alter the general recommendation listed, i.e. weight, altitude, horsepower, and desired performance. (We recommend using the IJSBA rule book as a source for more definitions of these classifications).

Please click here to view Skat Trak's impeller selection guide.

   Stock: Being little or no modifications made to the engine.
   Limited: Modifications usually limited to bolt on items, slightly increasing horsepower.
   Modified: Limited bolt on items in addition to modifications including internal changes with 
   considerable horsepower gains.