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RULES & REGULATIONS
The rules & regulations for jet boat river racing in New Zealand are governed by the NZ Jet Boat River Racing Association (River Racing NZ) which is an affiliate of the Union Internationale Motonautique (UIM), a requirement for world championship status.
World Championship events rotate between four participating countries, NZ, USA, Canada & Mexico on a yearly basis.
Check out the NZJBRRA Rules & Guideline links below.
Please refer to the Membership & Licence Page
Traditionally the domain of large capacity normally aspirated V8's over 454ci or with turbo or supercharger (multiply ci x 1.4), today the fastest race boats are powered by repurposed helicopter gas turbine engines.
0cc Up to 7,700 cc Maximum displacement. (Including turbo engines with 1.8x Multiplication applied)
New changes for 2025 season
Up to 10,000cc (632 CI) Maximum Displacement naturally aspirated. 1x Single Plane Manifold Carb/EFI 1x Single four-barrel Carb/Throttle Body Multiplication factor remains capped at 7700cc maximum displacement
Formula class designed to provide a level playing field for drivers - Speed up around 105mph
Formula class using the popular ZZ4 & ZZ6 (350 Chev) and ensuring driving skill is paramount. Approx top speed 92mph​
FX -Evo Class was implemented in 2024 and is being run in the 2025 Season. All Current FX Class boats will fall into the class but will no longer be governed by the FX Engine restrictions so any modification to their current FX Engine is now allowed. This is a Speed Restricted Class and Speed Shall be governed to 144 KM/H - 90 MPH
Please refer to the FX-Evo Class Rules for details
Adam Wilton
Email: adam@jettec.co.nz
Paul Cross
Email: paul@keelowcraft.com
Damian Pulley
Email: nzjbrra32@gmail.com
Riley Smith
Email: rakaiaautomotive@xtra.co.nz