Rotax Lights & Heavy

It’s very easy to convert your current KartSport New Zealand compliant sprint kart to SuperKart specifications. All the sprint karting technical specifications are exactly the same for SuperKarting. 

There are five steps involved:


Fit a 17 tooth front sprocket to your existing clutch drum. These are available from most Kart Shops and cost around $60.00. Start with a 74 tooth rear sprocket but you may end up running anywhere between 72 to 77 teeth depending on the conditions and the track.

Fit a rain light and waterproof switch: These are available from most Kart Shops or Repco and cost around $70.00. A red rain light is mandatory. It must be a Narva LED trailer stop/tail lamp, part number 93816BL mounted horizontally. The brighter brake light circuit of the lamp must be used. In operation the light must be static. It must be powered by a fully sealed 12 volt battery that complies with KSNZ rule K1.37 and is controlled by a waterproof switch fitted within 150mm of the steering wheel. For Rotax Max and Rotax DD2 classes it is a permitted option to power the rain light by a second fully sealed 12 volt battery that complies with KSNZ rule K1.37. The light must be placed in an area located 400-600mm from the ground and 100mm maximum from either side of the central axis of the kart and must be rear facing and clearly visible by following karts. It must be in good working condition throughout the event displaying maximum light output. It must be switched on when the race is declared “wet” by the Clerk of the Course and is recommended to be switched on in any conditions where visibility may be reduced. The Chief Steward’s decision on the suitability and effectiveness of the rain light will be final.




Put a bigger main jet in your carburettor. A 125 is usually about right.




A front fairing is definitely an advantage when it comes to cutting through the air at higher speeds but it is not mandatory for SuperKarting. You can use your standard sprint racing nose cone and Nassau panel and a lot of people do this for their first SuperKarting event. A front fairing kit costs around $750.00 and comes with a custom mounting kit designed to fit your make and model of chassis.


They are available in either black or white finishes from Tony at BM Fabrications in Auckland, phone: 027 278 7818 or bmfabrications10@gmail.com

Put a black cross on your rear number plate. You will be required to run a cross on your rear number plate and leave your rain light on whenever you are on track until you have been observed by a KartSport New Zealand official and gained a Road Racing B Rated Non- Gearbox rating on your KartSport New Zealand licence.


Minimum all up weights are the same as sprint racing ie: 165kg for Rotax Light and 185kg for Rotax Heavy. Fuel and tyres are also governed by the same rules as sprint racing. If you need any help there is always a friendly committee member ready to answer any questions that you may have (See the contacts page).  

DD2 Class

It’s very easy to convert your current KartSport New Zealand compliant sprint kart to SuperKart specifications. All the sprint karting technical specifications are exactly the same for SuperKarting. 

There are five steps involved

Fit a road race optional gear set to the engine (41/42 or 43/55) depending on the conditions and the track. 

These are available from most Kart Shops and cost around $520.00 a set.

  1. Fit a rain light and waterproof switch: These are available from most Kart Shops or Repco and cost around $70.00. A red rain light is mandatory. It must be a Narva LED trailer stop/tail lamp, part number 93816BL mounted horizontally. The brighter brake light circuit of the lamp must be used. In operation the light must be static. It must be powered by a fully sealed 12 volt battery that complies with KSNZ rule K1.37 and is controlled by a waterproof switch fitted within 150mm of the steering wheel. For Rotax Max and Rotax DD2 classes it is a permitted option to power the rain light by a second fully sealed 12 volt battery that complies with KSNZ rule K1.37. The light must be placed in an area located 400-600mm from the ground and 100mm maximum from either side of the central axis of the kart and must be rear facing and clearly visible by following karts. It must be in good working condition throughout the event displaying maximum light output. It must be switched on when the race is declared “wet” by the Clerk of the Course and is recommended to be switched on in any conditions where visibility may be reduced. The Chief Steward’s decision on the suitability and effectiveness of the rain light will be final.

      




Put a bigger main jet in your carburettor. A 135 is usually about right.



A front fairing is definitely an advantage when it comes to cutting through the air at higher speeds but it is not mandatory for SuperKarting. You can use your standard sprint racing nose cone and Nassau panel and a lot of people do this for their first SuperKarting event. A front fairing kit costs around $750.00 and comes with a custom mounting kit designed to fit your make and model of chassis. 


They are available in either black or white finishes from Tony at BM Fabrications in Auckland, phone: 027 278 7818 or bmfabrications10@gmail.com

  1. Put a black cross on your rear number plate. You will be required to run a cross on your rear number plate and leave your rain light on whenever you are on track until you have been observed by a KartSport New Zealand official and gained a Road Racing B Rated Non- Gearbox rating on your KartSport New Zealand licence.


Minimum all up weight is the same as sprint racing ie:173kg. Fuel and tyres are also governed by the same rules as sprint racing. If you need any help there is always a friendly committee member ready to answer any questions that you may have (See the contacts page). 


KZ2 Class

It’s very easy to convert your current KartSport New Zealand compliant sprint kart to SuperKart specifications. All the sprint karting technical specifications are exactly the same for SuperKarting.

There are five steps involved:


Fit a 19 tooth front sprocket on your engine and a 22/21 tooth rear sprocket on the axle depending on the conditions and the track. These are available from most Kart Shops and cost around $150.00 for the axle sprocket and the engine sprocket is around $80.00

Fit a rain light and waterproof switch: These are available from most Kart Shops or Repco and cost around $70.00. A red rain light is mandatory. It must be a Narva LED trailer stop/tail lamp, part number 93816BL mounted horizontally. The brighter brake light circuit of the lamp must be used. In operation the light must be static. It must be powered by a fully sealed 12 volt battery that complies with KSNZ rule K1.37 and is controlled by a waterproof switch fitted within 150mm of the steering wheel. For Rotax Max and Rotax DD2 classes it is a permitted option to power the rain light by a second fully sealed 12 volt battery that complies with KSNZ rule K1.37. The light must be placed in an area located 400-600mm from the ground and 100mm maximum from either side of the central axis of the kart and must be rear facing and clearly visible by following karts. It must be in good working condition throughout the event displaying maximum light output. It must be switched on when the race is declared “wet” by the Clerk of the Course and is recommended to be switched on in any conditions where visibility may be reduced. The Chief Steward’s decision on the suitability and effectiveness of the rain light will be final.




In your carburettor fit a bigger emulsion tube and a bigger main jet. Consult your local Kart Shops for detailed tuning information specific to your engine.




A front fairing is definitely an advantage when it comes to cutting through the air at higher speeds but it is not mandatory for SuperKarting. You can use your standard sprint racing nose cone and Nassau panel and a lot of people do this for their first SuperKarting event. A front fairing kit costs around $750.00 and comes with a custom mounting kit designed to fit your make and model of chassis.


They are available in either black or white finishes from Tony at BM Fabrications in Auckland, phone: 027 278 7818 or bmfabrications10@gmail.com

Put a black cross on your rear number plate. You will be required to run a cross on your rear number plate and leave your rain light on whenever you are on track until you have been observed by a KartSport New Zealand official and gained a Road Racing B Rated Gearbox rating on your KartSport New Zealand licence.


Minimum all up weight is the same as sprint racing ie: 175kg. Fuel and tyres are also governed by the same rules as sprint racing. If you need any help there is always a friendly committee member ready to answer any questions that you may have (See the contacts page). 



International Class

This is the “MAC DADDY” of all SuperKart racing, and with around 95HP and an all up weight of 220 kg they are absolute beasts! These are not for the first time driver and most definitely not for the faint hearted. These karts are custom built for the large motorsport tracks and do not compete on the sprint circuits. They get up around the 230km mark and do lap times that make car classes look like they were parked.


Over time the International class has proven to be a class where people have progressed from other classes over time, and this is probably the best idea if you were ever to look in the International SuperKart direction. They take a lot of time, energy and skill, not to mention money if things go wrong.


Typically they are custom built to suit the driver size and height. They are nothing like a sprint style chassis at all. They have 250cc engines with front and rear monster brakes, full body work, in most cases twin radiators, 6 speed gearboxes and a power to weight ratio that seems more like a formula 1 car.


Given that they are custom built, they usually comply with the rule book straight off the bat.

For those who are genuinely serious about heading towards the International SuperKart class, just get in touch with anyone on the committee and we will steer you in the right direction.


There are very stringent safety requirements around new drivers and mandatory practice days are one of them. This is done for the safety of the new driver and all the other drivers out on the track.