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Vortex ROK DVS Introductory Offer and 

Junior Prize Drives Announced

A new era for New Zealand Karting is getting close and Supreme Kart Supplies & Engines is delighted to be the NZ distributor of the Vortex ROK DVS engine announced just prior to Christmas.

The Vortex ROK DVS is a state of the art water-cooled engine, but without all the complexity of batteries, starter motorsDVS_with_guard-clear (002).jpg and clutches, harking back to the simpler, lighter days of old. An engine that will offer Junior and Senior competitors a raw yet sophisticated karting experience with throttle response to match. The simplicity, technology and quality of the DVS engine far exceed that of the old Yamaha KT100. 

An exceptional service life combined with long term fixed performance control/rules make the ROK DVS an excellent engine choice. It will provide drivers with the stability they are looking for as there are no ongoing evolution costs and the engine’s excellent parity will provide a level playing field with regards to performance. The same simple philosophy as applied to the Vortex Mini ROK carburettor has been adopted for the DVS carburettor. This ensures that the tuning is very simple for everyone. Installation of the engine is also very straight forward.

If you are attending the 2018 City of Sails incorporating Round 1 of the 2018 ROK Cup Series at KartSport Auckland, 26-28 January, please call by our pit site and check out the ROK DVS engine which we will have mounted, ready to go, on a new Tony Kart chassis.

Special Introductory Offer

We have been successful in securing a special buy price from Vortex on the first 20 engines so we will be passing on this $500.00 (inc GST) discount on the first 20 engines ordered. To qualify for this discount all we require is your confirmed order and a $1000.00 deposit on the engine. 

Engines are eligible for Junior and Senior class competition from 1 May 2018 although they could be run in Open prior to this date.

Already we have a growing back order list so don’t delay in contacting us to ensure you don’t miss out on the discount!

Maurice or Kane Frost
06 7588891.

Two 2018 ROK Cup International Finals Junior Seats

KartSport New Zealand has confirmed that the two ROK Cup 2018 International Finals (9-13 October 2018 at Lonato,rok cup int winners 2017.jpg Italy) Junior seats will be awarded to the first two place getters in the Vortex ROK DVS Junior class at the 2018 National Schools Championships, to be contested at KartSport Hawkes Bay on 14th July 2018.

The prizes (subject to conditions) will include: 

- free entry 

- free complete kart for the race (OTK chassis + engine) 

- tyres for the race 

- free paddock spot and tent 

- hotel accommodation for the race days (for the driver) - free lunch 

- travel assistance from the KartSport/Lascom/Dunlop International Travel Fund.

The two Senior seats will be held over until 2019. Stand by for further announcements regarding the confirmation of the number of, and allocation of, the 2019 Junior and Senior seats for the 2019 ROK Cup International Finals.

Captions: 2017 ROK Cup International Finals class winners. Credit: ROK Cup/Foto Angiolella. Vortex CNC machine and  quality control test rig. Credit: Vortex Engines.


Single-cylinder 2 stroke engine Vortexcnc.jpg

Displacement 125 cc 

Reed valve intake in the crankcase 

Liquid-cooled through external pump 

Push-to-start system with decompression valve (auto closing) 


PVL Digital Ignition 

Dellorto 24mm Fixed Jet Slide Carb (as used in CIK-FIA Academy class) 

KG Nitro intake silencer with 23mm tubes with filter and rain cover

Bore and stroke 54x54mm 

Cast iron made cylinder liner can be honed from size to size when necessary 

5/3 transfer ducts intake 

Oval exhaust and 2 boosters 

All ports are CNC machined 

Piston ring C type for increased reliability 

Balance shaft for reduced vibrations 

ROK DVS exhaust with integrated silencer 

Radial main bearings C4 



Complete engine vortextestingrig.jpg

Drive sprocket Z12 (not fitted to engine, supplied in ancillaries’ carton) 

Complete PVL ignition system with 14.000 rpm limiter 

Dell’Orto VHST 24mm carburettor 

Exhaust manifold, spacers (x2), gaskets, pipe and springs 

KG Nitro Air box with 23mm tubes 

Dell’Orto fuel pump 

Fuel pump support 

Nuts, bolts and silent blocks for fuel pump 

Fuel hose 

Spark plug 

Spark plug cap 

Drive sprocket cover 

Installation and Operational Manual 

Pricing information:

(inclusive of GST)

Vortex ROK DVS Engine Kit. $4,500.00

Plus the choice of Water Kits:

Water Kit OTK $940.00
Radiator including fitting kit, water pump,
water pump pulley, two hoses, OTK
water pump mount, water temp
fitting, hose clamps x 6, belts x2
air box support clamp.
Bypass thermostat, hose T, hose clamps. $134.00

Water Kit Aftermarket. $550.00
Radiator, fitting kit, water pump
water pump mount, two hoses,
belts x 2, hose clamps x 6, water pump
pulley, water temp connector, air box
support clamp.
Bypass thermostat, hose T, hose clamps .$134.00


Release from Supreme Kart Supplies and Engines

KartSport New Zealand