this is all I could find on mxsports.com
B. MACHINE ELIGIBILITY AND CLASSIFICATION
1. Riders may ride a stock motorcycle in a modified class.
2. 2012 model machines are NOT eligible in any class.
3. To be eligible for a STOCK CLASS, the following cannot be changed or modified: Internal engine components, electronics, frame, carburetor, air box, swing arm, rim size, wheel hubs and exhaust system. Cylinder re-plating is allowed but must retain the original manufacturer's bore. Changes to carburetor jetting are allowed. Clutch plates, pistons and piston rings may be accessory items so long as they maintain the stock shape, design and material of the OEM parts. High compression pistons are not allowed. All other internal engine components must be stock OEM parts. Material may be added to the existing frame for strength, including welding. OEM front and rear suspension can be altered with internal modifications only. Shock linkage and suspension spring rates may be changed to any commercially available part. Changes/modifications to the silencer are allowed for the sole purpose of complying with current sound requirements.
Any items not listed above may be changed or modified. Violations of the stock class rules as determined by the protest process or by the referee of the event will result in a disqualification from the class, or at the Qualifier level, assignment to the appropriate class. A second violation will result in a disqualification from the class and a suspension from AMA competition for one year. Changes that are cosmetic in nature are allowed, so long as there is no performance advantage.
the guy that won the vet class last yr on a 125 I believe was on an 04 so I think it'd be fine. What class would you try to qualify in?
