2002 Ducati Superbike 998 Owners Manual - Page 135

Important The above gear ratios are the homologated ones and under no circumstances must they be modified. However, if you wish to tune up your motorcycle for competitive trials, you may refer to Ducati Motor Holding S.p.A. who will be glad to provide information about the special ratios available. Contact a Ducati Dealer or Authorized Workshop. Warning For the replacement of the rear sprocket, contact a Ducati Dealer or Authorized Workshop. The incorrect replacement of this component could seriously endanger your safety and that of your passenger and cause irreparable damage to the motorcycle. Frame Tubular trestle frame with upper section made of highstrength steel. Steering angle (on each side): 27° For improved performance on track the headstock angle can be changed (see page 45) on 748S and 998 models, but it cannot be changed on 748 models. STANDARD steering setting for road riding is as follows: Steering head angle: 24°30' Trail: 97 mm. For track riding, setting for 748S and 998 models can be modified to the following values: Steering head angle: 23° 30' Trail: 91 mm. E 63