| As already mentioned to you Myk yours is a Late Monster engine circa 99 to 01
Has a 1.85 to 1 Primary drive ratio and standard gearing for a Monster was 15/46.
600 Supersport models were no longer made at that point but if they had of been Ducati would have done what they normally did and dropped the rear sprocket down to a 44.
in 2002 the Monster became a 620 and the 620 Sport was introduced, gearing was 15/46 and 15/44 respectively
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