Mini Lite 250 Class

Mini Lite 250 class will run along side the MNZ stated rules for the StreetStock 150 class in the current Motorcycle New Zealand Rule book Chapter 22. 22-12 with some exceptions and alterations as stated below.

In general:

Classification for entry to Mini Lite 250 is:
250cc Multi Cylinder (2 or more), four stroke, production based machines
E.g. Kawasaki ZXR250C, Honda CBR250RR, Yamaha FZR250. The intended spirit of this class is to provide relatively affordable 4 stroke racing without excessive machine modification for performance. Bikes that breach this spirit run the risk of close scrutiny and exclusion.

VMCC Mini Lite 250 rules:

This class will exist for production-based 250cc, four stroke machines to be raced in a competitive environment, with some freedom for machine set up but within the confines of rules to suit the New Zealand market conditions.

Preparation of Motorcycle Mini Lite 250 race bikes are to be prepared in accordance with Chapter 10 of the MNZ Manual of Motorcycle Sport. In instances of wear and tear damage or failure, parts may be replaced but must not derive a performance advantage.

Fuel These machines must function on normal or unleaded fuel with a maximum lead content of 0.013g/l (unleaded) and a maximum of 98 RON.

Machine Specification All items not mentioned in the following article must remain as originally produced by the manufacturer for the homologated machine.

Frame Body and Rear Sub Frame All motorcycles must display the manufacturer’s vehicle identification number on the frame. Additional seat brackets may be added but none may be removed. Bolt on accessories to the sub frame may be removed. Polishing of the frame or sub frame is prohibited. Paint scheme open.

Forks The inner an outer front stanchion must remain standard. Only springing and oil may be changed.

Wheels The speedo drive may be removed and replaced with a spacer.

Brake Lines The original brake lines may be replaced with braided brake lines.

Items that may be replaced but maintain original dimensions and fitment points

• Footrests/foot controls
• Handle bars
• Hand controls
• Clutch and brake levers

Fairings Fairing, front guard, windscreen and bodywork must retain the original shape as produced by the manufacturer, but these parts can be replaced with an exact cosmetic copy. Where there is no competitive advantage to be gained, alternative fairings may be allowed at the discretion of the VMCC committee. For example, when fiberglass fairings from a similar era, and type, production based bike are more readily available and affordable. Carbon fibre is restricted to the reinforcing parts only, carbon fibre cannot be used elsewhere. Small plastic cones may be added to the machine to minimize accident damage. All exposed edges must be rounded.

Seat Seat and seat base and associated bodywork may be replaced with parts of similar appearance as the original shape; the top portion of the seat may be modified to create a solo seat.

Fuel Supply Fuel lines may be replaced Quick connectors or dry break quick connectors may be used. Fuel line vents may be replaced fuel filter may be fitted.

The following item may be replaced Base and head gasket with Standard parts. Must retain original thickness.

The following must be removed or altered. Horn, licence plate bracket, Tool box, speedometer, passenger footrests, passenger grab rail, passenger footrest mount brackets, chain guard.

Fasteners Fasteners may be drilled for safety wire only. Fairing fasteners may be changed for quick disconnect type. Titanium/aluminium fasteners may not be used.

The following items must be altered or removed.

• Motorcycle must be equipped with a functional ignition kill switch or button mounted on the handlebars (with-in reach of the hand while on the hand grips) that is capable of stopping a running engine.
• Throttle controls must be self-closing when not held by the hand.
• Centre and side stands must be removed (fixed brackets must remain)
• Headlamp, rear lamp, must be removed or completely covered in adhesive tape such as duct tape, electrical tape or cloth tape.
• Indicators must be removed.
• Where Breather or overflow pipes are fitted they must discharge via existing outlets. The original closed system must be retained; no direct atmospheric emission is permitted fitted.

Tyres

Only tyre sizes that are suitable for the rim size of that model bike, according to the tyre manufacturers specifications, are permissible. Race style DOT road legal tyres are permissible.

If in the event of a WET RACE an alternative DOT tyre (refer to the preceding regulation) can be used with different tread. E.g. Bridgestone BT45 to suit the conditions.

Hand cut DOT size race tyres will be allowed. E.g. Dunlop GPR-a10 in the event of a WET RACE.

Non-DOT approved tyres will not be allowed. E.g. Race Slicks and Race Wets.

With respect to the above regulations, the Motorcycling New Zealand Steward of the day has the authority to assess the appropriateness of the tyre size for the motorcycle and determine whether it is appropriate for the motorcycle. The Steward’s decision is final.

Tyre warmers Can be used in Mini Lite 250 class

Steering dampers Can be used in the Mini Lite 250 class.

Rear shocksIf the original shock needs to be replaced and an original OEM exact shock cannot be sourced, a similar OEM fitment shock is permissible for use. E.g. Fitting a rear shock from a 1991 GSXR250 in a 1991 ZXR250. The replacement shock must be of similar specification, dimension and/or period available for the original model and its variants.

Ohlins or other aftermarket shocks will not be permitted.

Exhausts Aftermarket mufflers are permissible and must conform to noise regulations. Aftermarket or performance race exhaust systems ( headers, and /or collector and muffler) are not permissible, unless they were on the machine when imported.