2019 PRO WATERCROSS RULEBOOK

The Pro Watercross rulebook contains a number of changes for the 2019 season. Changes that have been made are in response to suggestions from individual riders, teams, promoters and to better align rules for the sport in general. Below is a highlight of the major changes that have been made. For complete rule details please review the 2019 ProWatercross rulebook by clicking here...

GENERAL RULES: RULE SECTION 24

Pump water strainers can be modified or aftermarket. Rule 24.10.11
Reverse gates may be removed or reverse functionality eliminated. Rule 24.10.12
Turbo chargers must have water cooled housing. - Specified for all GP classes.

SKI STOCK: RULE SECTION 25

Cylinder interchanging allowed between homologated models. Rule 25.4.1
Cylinder sleeving for Yamaha 701 cylinders allowed. Rule 25.4.1
Displacement for the class has been increased to 850cc. Rule 25.4.2
Aftermarket head on Kawaski SXR changed to allow a minimum of 28cc domes rather than 180psi. Rule 25.4.4
Utilizing a Yamaha 760 cylinder no longer requires the use of a 760 head. Rule 25.4.11

SKI 4-STROKE STOCK: RULE SECTION 26

Cooling lines and fittings allowed to be aftermarket. Rule 26.1.6

SKI GP: RULE SECTION 28

4-stoke forced air induction engine CC limit increased to 1100. Rule 28.5.2
Boost limit adjusted: <901cc 8psi, >900cc 6psi. Rule 28.5.4
Reduced boost regulator to utilizing a single stage regulator only. Rule 28.5.5

SKI SUPERSTOCK: RULE SECTION 27

Revised to allow 2-stroke and 4-stroke engine packages from homologated watercraft.
2-stroke 1100cc stock option eliminated.

BLASTER GP CLASS ADDED: RULE SECTION 31

GP class for Blaster based hulls with max width 35.5in (90.2cm) and max length 96.5in (245.1cm). Rule 31.3

RUNABOUT BOX STOCK / IROC STOCK: RULE SECTION 34

Seat rule adjusted to allow a maximum height change of 0.5in (1.27cm). Rule 34.3.1
Sponsons can be modified or aftermarket. Rule 34.1.3, 24.9

RUNABOUT GP: RULE SECTION 38

Cylinder head casting must be the OEM that matches the block being used. Rule 38.5.3
Crankshaft weight must be OEM +/-5%, no stroking of engines with OEM displacement greater than 1600cc. Rule 38.5.4