| Re: Here are the latest AMA Rules For all you race fans, read and enjoy:
For those of you who'd rather read about the rules right here, we've taken them from the AMA site and here they are...
Fuel injection throttle bodies:
Multi-cylinders – Restricted to stock throttle bodies and air intake boxes.
Twin-cylinders – In addition to the stock throttle bodies, one alternate, AMA-approved throttle body type/set is permitted as well as aftermarket air intake boxes.
Engine modifications:
Multi-cylinders – Limited modifications are permitted but such items as stock camshaft lift, stock valve sizes and lightly-modified stock crankshafts are required.
Twin-cylinders – The same limited modifications as multi-cylinders are permitted except for the following items:
Valve sizes and material are unrestricted.
Camshafts are unrestricted.
Gearboxes:
Multi-cylinders – In addition to the stock set of gear ratios, one alternate, AMA-approved set of ratios is permitted. Primary drive ratios must remain stock.
Twin-cylinders – The same rules as multi cylinders apply.
Frame:
Multi-cylinders – Limited modifications to the stock frame are permitted such as gusseting for additional strength.
Twin-cylinders – The same rules as multi-cylinders apply.
Minimum weight:
Multi-cylinders – The minimum total motorcycle weight (less fuel) is 370 lbs.
Twin-cylinders – The same 370 lbs. minimum weight applies |