OEM Aprilia Countershaft Sprocket 520 Pitch, 15 Tooth - 2B006791 For RS660, Tuareg, Tuono 660 *See detailed fitment list*
OEM Aprilia Countershaft Sprocket 520 Pitch, 15 Tooth - 2B006791
For RS660, Tuono 660, and Tuareg 660
Countershaft bolt torque spec is 50nm or 38ft/lbs
Retaining bolt and washers are sold separately as part numbers: