[NCFRC]

Model - 2005 CRF230F

Engine Mods - Stock 9-1 , stock cam , power-up kit w exhaust and intake modified.

Rider - 13 year old son

Type of riding area - New England woods trails

Gearing - was a 12 front sprocket , but just changed it back to the stock 13. I have not tryed a 14 or 15 . Suspect may be too high for a stock motor.