The following parts are specifically prohibited: Components made from Kevlar, Carbon Fibre, Titanium or other similar exotic materials, other than for the seat and floor tray which is optional. Magnesium front and rear wheel hubs, engine mount, brake disc hub, sprocket carrier and steering wheel mounting boss may be used. The use of plastic or similar materials for components such as wheels, wheel hubs/bosses, sprocket and brake disc carriers is expressly forbidden.
taken off the talko site ....
seems clear to me that you cant use nylon sprockets on a tkm .
But is Nylon a plastic or an exotic material???....and if they are classed as so are you illegal with the {�5} nylon/plastic disc brake protector..... mmmmmm something to mull over
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