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Release #5

KartSport New Zealand is pleased to announce the result of the Cadet and Junior Restricted Age Groups Class/Engine Review.

Vortex Kiwi Mini Rok

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The 2013 National Conference endorsed KartSport New Zealand’s evaluation program and decision to implement the Vortex Kiwi Mini Rok  as the new approved engine for Cadet and Junior Restricted age group classes in New Zealand.

An extensive, professional evaluation program has been completed following the imperatives endorsed by Clubs in the KartSport New Zealand 2011-15 Strategic Plan. The program has been completed on time and within budget following notification in 2012 that the Radne was planning to cease production of the Raket 85.

KartSport New Zealand is excited to welcome in a new era for existing and potential new members to what is one of the most exciting and competitive family sports in the world. The introduction of the new Vortex Kiwi Mini Rok heralds a new era of confidence and contemporary engineering to our sport. We look forward to building a strong new base of aspiring new Kiwi world champions.

The Vortex engine is manufactured by the Italian OTK Kart Group srl and will be represented in New Zealand by distribution agent Maurice Frost of MW & JD Enterprises Ltd (Supreme Kart Supplies).

KartSport New Zealand wishes to thank everyone involved including those manufacturers who generously submitted options and assisted with the evaluation process. KartSport New Zealand also wishes to recognise the longstanding support and commitment from Radne Motor AB and their agent, Graeme Voss of Kiwi Kart New Zealand.

Transition Plan

The KartSport New Zealand National Conference endorsed a transition plan to support and foster increased participation numbers through a phased transition to the new engine.

transition chart from Conferenceweb.jpg

This means at the 2014 NZ Schools Championships and the 2014 Island Sprint Championships both the new & old engines will run providing the minimum entry is met for each class respectively.
The respective Vortex Mini Rok options will run on alternate days at the 2014 NZ Schools Championships. The means the same actual engines could be used for both age groups. IE  JR Mini Rok Saturday, Cadet Mini Rok Sunday.

Q & A

Will I be able to import my own engines?
. All engines will be supplied via the NZ Distributor and a register of engine numbers will be maintained by the NZ Distributor and KartSport New Zealand.

How much is the engine?
For the first 100 engines sold: $2955.50 (incl GST). From then on until 31-12-15: $3070.50 (incl GST). Future price movements for both the engine and all spare parts are subject to a contract between KartSport New Zealand/OTK Kart Group srl/Supreme Kart Supplies.

What is included in the price?
Electric start engine including exhaust pipe/header, clutch with guard, float carburettor/fuel pump, intake silencer with foam filter, wiring loom with class specific electronic rpm limiter (Cadet 11,000 rpm & JR 14,000 rpm), battery and battery mount.

Where can I buy a new engine?
From your local kart shop providing it has a trading relationship with Supreme Kart Supplies.

When can I race the new engine?
From 1-1-14.

Will the engine fit my existing chassis?
. It was a key criteria in the engine selection process that the new engine would be suitable for the current Cadet and Junior Restricted chassis stock.

Is it easy to convert the engine from Cadet to JR (and vice versa)?
, very easy, Any competent person can do it

What happens to my current Raket 85?
Once it no longer has Championship status it can be used at Non Championship events until 31-12-15 and then indefinitely at Club Days only.

What happens to my current Yamaha JR engine?
From 1-1-16
it will be ineligible for JR class competition. However your engine can then be converted to Junior/Senior Yamaha KT100 specification.

Will the new engine run within the existing age group classes?
The new engine will have its own specific class specifications respectively and at Championship events will run alone. However at Club and regional events both the old and new engines can run together, but be classified separately (eg Cadet Rok and Cadet Raket can run together).

Is there performance parity with the existing class engines?
While the respective performance of the new engine is similar to current class engines, the new engines will compete in their own new classes, so absolute parity is not a key requirement.

Further details and supply dates will be available soon. Trade enquiries should be direct to:
Maurice Frost
Supreme Kart Supplies
79 Hurlstone Drive, New Plymouth
Phone/Fax: 06 758 8891


    Engine displacement 60ccrokcup2012pic2.jpg
    Free air cooling
    Intake piston port
    2 transfers inlet
    Exhaust without rib
    Coated piston
    Piston ring ac
    Silver plated cage d.18 mm
    Radial bearing C4
    Electronic ignition Selettra
    Centrifugal dry clutch
    Electric starter on board 
    Dellorto PHPB 18BS carburettor

Full KartSport New Zealand technical specifications for this engine will be published in the 2014 KartSport New Zealand Manual.

Further announcements regarding the introduction of the Vortex Kiwi Mini Rok will follow over the next few months.

The Age Group Brackets for Cadet and Junior Restricted will change on 1-1-15.


For further information please contact:
Graeme Moore
Project Leader

 CLICK HERE for a link to the Vortex Rok website.

PICS: Credit Vortex/M Angiolella

KartSport New Zealand