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Horsepower and torque as bikez.com lists them; it does not say whether claimed or measured. Keihin PWK 38 carburettor. Bore x stroke (72 x 72 mm = 293.1 cc) disagrees with the displacement printed beside it (294.7 cc) in https://www.bikez.com/motorcycles/gas_gas_ec_300_2003.php; bore, stroke and engine_cc left null.