Transmission - Ducati ST4S Owner's Manual

Transmission

Dry clutch operated by a control lever on left handlebar.
Drive is transmitted from engine to gearbox main shaft
via spur gears.
Gear ratio:
32/59.
6-speed gearbox with constant mesh gears, gear change
pedal on left side of motorcycle.
Front/rear sprocket ratio:
15/38.
E
Total gear ratios:
st
1 gear 15/37
nd
2 gear 17/30
rd
3 gear 20/27
th
4 gear 22/24
th
5 gear 24/23
th
6 gear 28/24
Drive chain from gearbox to rear wheel:
Make:
DID
Type:
525 HV.
Size:
5/8"x1/16"
Links:
102
80
Important
The above gear ratios are the homologated ones
and under no circumstances must they be modified.
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. Relevant instructions and original spare
parts are available from your local Dealer or authorized
workshop.
Warning
If the rear sprocket needs replacing, contact a
Ducati Dealer or an authorized workshop. If improperly
replaced, this component could seriously endanger your
safety and that of your passenger, and cause irreparable
damage to your motorcycle.