Rules - /SB – SPORTS BIKE

 

Concept: This section is for naturally aspirated production sports motorcycles as supplied by the manufacturer. They may be modified to the limits described in the class requirements but must retain a stock appearance.

 

Note: Class requirements must be read in conjunction with the General Racing Regulations 2.0 and Safety Regulations 5.0.

 

Class Requirement

NZDRA Competition licence required. See Credentials 3.0.

Turnaround- Must be capable of a 45 minute turnaround time. Timed from the last pairing.

 

Classes

A/SB     1000cc and over

B/SB      650cc to 999cc

C/SB      250cc to 649cc

 

 

Engine

Engine – Any engine modifications permitted, provided OEM cylinder(s), cylinder head, and crankcase castings are retained. No engine swaps permitted

Exhaust – Aftermarket exhaust permitted.

Ignition – All -/SB must have a positive action on/off ignition switch within reach of the riders hands without removing them from the handlebars.

Fuel – Pump gas to a maximum of 98 RON permitted. No additives permitted.

Fuel Shut Off – Fuel shut off valve must be installed in fuel lines between the tank and carburettor(s). EFI engines may have an operating tip over sensor instead.

Throttle – Must have a spring loaded throttle return. Butterfly type carburettors must have two return springs fitted.

Supercharging – No supercharging, turbo charging, or Nitrous Oxide permitted.

 

Body and Chassis

Appearance – All machines must bear full street equipment including instruments, mudguards, wiring harness, etc.

OEM headlight and tail light must be used and operative. Replacement of original instruments with aftermarket units permitted.

Factory production fuel tank for model used is required.

Rear view mirrors and indicators may be removed.

Models that have a fairing and screen fitted standard must use them or replicas. Fairings may be trimmed for ground clearance, or to clear the exhaust. Screens must be thin and flexible for safety reasons (i.e polycarbonate). Replacement replica front guards permitted.

Upholstery – Original seat base required. Trimming of seat to a minimum of 25mm at the front half of the seat is allowed.

Ballast – Any ballast, or unnecessarily heavy components on the bike, are not permitted.

Frame – No frame modifications permitted whatsoever.

 

Drive Train

Chain guard – Either stock chain guard, or one made from 5mm (minimum) aluminium, or 3mm (minimum) steel must be fitted.

Transmission – Automatic gearboxes are not permitted.

Air or electric gear change devices are not permitted.

Clutch – Clutch must be of original type for engine used, but springs and friction plates may be substituted. No centrifugal assistance is permitted, and no means of delaying clutch engagement may be used.

Wheels and Tyres – DOT rated motorcycle tyres with minimum tread depth of 1.0mm required. Slicks and tyres marked “ Not for highway use” not permitted.

|Up to 210 kph Motorcycles – Must use a minimum of H rated tyres.

210 to 260 kph Motorcycles – Must use a minimum of V rated tyres.

Over 260 kph Motorcycles – Must use a minimum of Z rated tyres.

Standard wheels for model used permitted.

Aftermarket wheels produced specifically for motorcycles permitted. Minimum diameter 17”.

 

Suspension

Brakes – Stock front and rear operative brakes required as a minimum.

Suspension – Lowering permitted but must retain a minimum of 25mm downward suspension travel front and rear. External straps or devices used to limit fork extension must be recognizable as fit for purpose. No metallic tie rods to be used.
Triple trees must retain stock offset.

Swing arm must be stock length (pivot centre to rear axle centre at maximum length setting)

Wheelie Bars – Not permitted.

 

Rider Safety / Support

Helmet – Mandatory.. Must have visor or shatter proof goggles. See Safety Regulations 5.57.

Protective Clothing – All riders of bikes capable of less than 120 mph – Minimum of leather motorcycle jacket and leather pants. Heavy trousers are acceptable in lieu of leather pants.

All riders of bikes capable of exceeding 120 mph – Mandatory purpose made motorcycle leathers, leather gloves and boots of at least 200mm leg height.

Back Protector mandatory for bikes capable of exceeding 150 mph.

Tow Vehicles – Not permitted.