They may a difference in yours depending on the age of the bikes involved...... there was a change in I think 2000 when the length of the piston in the slave & the pushrod changed. The easy waty to tell them apart is that the early ones are basically cylindrical and have a Ducati roundel on the end. The later ones taper in towards the engine cover and have a design rather like a torx socket on one. You can use either, it's just that you need the correct length pushrod... HTH Andy |