RULE CLARIFICATION Information Bulletin #1632
May 12, 2017

Affected Disciplines: Dirt Track Track Rule Pertains to: Permitted modifications in the 50cc Auto class

Current Rules in the 2017 Manual of Motorcycle Sport:
17.19.6.2

17.19.6.2 Machine Requirements

f) The appearance of a machine must remain as manufactured provided that the following may be altered:
i) Colour,
ii) Seat,
iii) Mudguards,
iv) Handlebars,
v) Grips,
vi) Levers,
vii) Cables,
viii) Chains,
ix) Tyre brand and tread pattern,
x) Carburettor jets

18.20.3.2
18.20.3.2 Machine Requirements
f) The appearance of a machine must remain as manufactured provided that the
following may be altered:
i) Colour,
ii) Seat,
iii) Mudguards,
iv) Handlebars,
v) Grips,
vi) Levers,
vii) Cables,
viii) Chains,
ix) Tyre brand and tread pattern,
x) Carburettor jets
New Wording After Clarification:
xx.xx.x.2
xx.xx.x.2 Machine Requirements

f) All machines must remain standard to the OEM specifications for the
model. Only the following items may be modified:
i) Colour,
ii) Seat,
iii) Mudguards,
iv) Handlebars,
v) Grips,
vi) Levers,
vii) Cables,
viii) Chains,
ix) Tyre brand and tread pattern,
x) Carburettor jets

Rationale:
To ensure consistency and clarity throughout the disciplines that hold 50cc Auto class for juniors, the above-mentioned wording will be implemented to better reflect the intention of the rules under Dirt Track and Track, 50cc Auto Class Permitted Modifications.

The 50cc Auto class is an introduction for juniors to competition and therefore machines should remain free from performance based modifications. In 2017, the Application of Chapter was removed from Dirt Track and Track however some regulations were not updated in order to retain the original intentions.

Rule change effective from:
Immediate

Feedback contact:
rules@ma.org.au | (03) 9684 0512

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