ProWatercross is pleased to announce the release of the 2021 ProWatercross Competition Rulebook. We greatly appreciate the feedback and suggestions provided by the rider community which is a key part of the continued evolution of our sport. The following is an overview of the changes incorporated in the 2021 rules. Please review the 2021 ProWatercross Competition Rulebook for complete details.
ProWatercross received considerable feedback regarding details in the recently released 2021 ProWatercross Competition Rulebook. Relative to this feedback we are releasing Revision B of the rulebook which includes updates and clarification on the 2021 rules. Please see the 2021 ProWatercross Competition Rulebook Rev B for complete details.
Updated highlights of the 2021 changes
- Section 27 - Ski 4 Stroke Superjet
- Rule set includes allowances for changes found in section 24 of the rulebook - handlebars, flame arrestors, rideplate...
- Exhaust hose: Added allowance for aftermarket piping between the waterbox and exhaust outlet
- Section 31 - Sport Stock
- Included clarification that stator plate must be OEM
- Included clarification that pump must be OEM
- Section 33 - Sport Open (Previously Blaster GP)
- Hull: Added allowance for stock Seadoo HX hull
- Engine Displacement: Set displacement limit for 2 cylinder engines to 1105cc and 3 cylinder engines to 1140cc when utilizing the Stock HX hull option. All others have a 1300cc limit.
- Exhaust: Set limit of 1 expansion chamber, no multiple expansion chamber exhausts allowed
- Four stroke engines no longer allowed in this class
- Section 36 - Runabout Box Stock / IROC Stock / IROC 1100
- Added the IROC 1100 class
- Pump: Allow pump update for 2019 and older Yamaha SVHO models to 2020 and newer pump
- Valve Springs: Added allowance for modified or aftermarket valve springs on all makes / models
- Valve Guides: Added allowance for aftermarket valve guides, must match OEM shape and size
- Section 41 - IROC GP
- Hull: Aftermarket hulls allowed but must conform to shape, weight and dimension restrictions
- Engine Displacement: Set maximum displacement to 1100cc
- Engine block: Block must be from an OEM IROC watercraft
- Glossary of terms
- IROC : Added Yamaha EXR to the list of IROC models
- IROC Stock: Class for the Seadoo Spark and Yamaha EX models
- IROC 1100: Class for the Yamaha EXR. Runabout Limited 800cc models may also compete in this class
