Racing Classes

There’s much more to the NZSBK Championship than just the ‘big boys’ of the Superbike class. With nine championship classes plus development and support classes at each round, top-class race action and entertainment is guaranteed all weekend long. The introduction of the Supersport 300 class for 2018 means the NZSBK Championship is now more aligned with international championships to attract more riders from other countries too.

Superbike
Supersport 600
Supersport 300
250 Production
Superlite
ProTwin
125GP/250 Mono
Sidecars
Gixxer Cup

Superbike is the top race class in the NZSBK Championship. Open to all manufacturers of motorcycles sold in New Zealand, this class gives distributors of sports production machinery the opportunity to showcase their machines in a competitive environment.

The appearance from both front and rear and the side profile of Superbike motorcycles must conform to the homologated shape (as produced by the manufacturer). Some modifications to machine set-up are allowed, with engine capacity of:

• 800-1300cc, 4-stroke, 2-3 cylinders max
• 750-1000cc, 4-stroke, 4 cylinders max

This class allows for New Zealand distributors of Supersport machinery an opportunity to showcase their machines in a competitive environment, with some freedom for machine set up but within the confines of rules to suit New Zealand market conditions. As the name Supersport implies, the machines used are allowed limited modifications.

The appearance from both front and rear and the side profile of Supersport motorcycles must conform to the homologated shape (as originally produced by the manufacturer). Supersport engine capacity:

• 501–600cc 4-stroke 4 cylinders max
• 601–675cc 4-stroke 3 cylinders max (also including 750 V-Twins)

This class of motorcycle requires a MNZ Homologation, with a minimum of 30 units sold of that mass-produced motorcycle. Machines must be street type, road registerable, available and originally sold new in New Zealand. In special cases approval may be granted by the Road Race Commissioner on an individual basis for riders from 13 years of age to ride in this production class.

The Supersport 300 class will run with the 250 Production class in the 2018 Championship.

This class of motorcycle requires an MNZ Homologation, with a minimum of 50 units sold of that mass produced motorcycle. The homologated motorcycle must be a street type, road registerable and WOF mass production machine, available and sold new in New Zealand. In special cases approval may be granted by the Road Race Commissioner on an individual basis for riders from 13 years of age to ride in this production class.

The 250 Production class will run with the Supersport 300 class in the 2018 Championship.

The Superlite class exists for ‘formula’ type machines and allows modifications while still keeping a similar level of performance between machines. Eligible machines include:

• Multi-cylinder 4-stroke up to 450cc
• Multi-cylinder production-based 2-stroke up to 400cc
• Twin cylinder air-cooled, 4-stroke up to 750cc
• Single cylinder 4-stroke 251cc–open capacity
• Single cylinder 2-stroke 200–500cc
• Twin cylinder, 2 or more valves water cooled 4 Stroke up to 650cc.

The Superlite class will run with the Pro Twin class in the 2018 Championship.

This class of motorcycle requires an MNZ Homologation with a minimum of 10 units sold of that model per year. Only minor modifications are permitted to these twin cylinder, 4-stroke, up to 660cc machines. The most popular model has been the Suzuki SV650 V-twin but the class also includes the Kawasaki ER650 parallel twin and Aprilia SV550.

The ProTwin class will run with the Superlite in the 2018 Championship.

MNZ Homologation is not required for the 125 Grand Prix/250 Mono class. Junior riders aged 13 years and over plus may compete, provided they have the required MNZ clearances and approvals. The majority of machines racing in New Zealand are Honda RS125cc motorcycles. Machine specs for this class are:

• Up to 125cc, single cylinder 2-stroke with a maximum 6 speed gearbox
• 200-250cc, single cylinder 4- stroke engine with a maximum of a 6 speed gearbox

In New Zealand sidecars run as Formula 1 (up to 1300cc) or Formula 2 (600cc 4-stroke) with no restriction on engine design. With three wheels and streamlined body shells very close to the ground, it is said these modern machines owe more to open wheel race car design than that of a motorcycle.

Gixxer Cup
New for 2018, the Suzuki GIXXER Cup is a class for entry level racing and is open to riders between the ages of 14 and 21. New Zealand’s newest class of production racing involves riders hitting the tracks on identical Suzuki GSX150F bikes, an absolutely level playing field for those starting out and on a limited budget. These air-cooled, four-stroke, single-cylinder, fully-faired GSX150F bikes have been prepared in Suzuki’s workshop.

The GIXXER Cup will be run at both the pre-nationals Suzuki Tri-Series and the 2018 New Zealand Superbike Championships. With the tagline ‘Growing Future Champions’, the class provides a springboard towards a successful racing future.