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Discussion Starter · #1 ·
hi new to the group:

been wanting a Ducati since i was a teenager pumping gas. finally sold off some of my race cars and purchased a ST4.
Been doing some research and always looking for more "cc's and power"
now the specs for st4 verse the "s" version. motors show the same stroke of 66 mm but the bores are up from 94 to 98 mm can you interchange these barrel and pitons????

also i feel there is a little more noise in the clutch assy then there should be so i replaced the clutch and basket, but manuls show that the alt flywheel comes loose, now is there a special tool required to tighten this, i removed the cover and see the 4mm allen but the split nut on the top???

thanks for the help in advance
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