Ducati MONSTERS4R Manuel De L'utilisateur page 143

Transmission
Clutch:
multiple-disk dry clutch;
operated by a control lever on left handlebar.
Drive is transmitted from engine to gearbox main shaft
via spur gears.
Ratio:
32/59.
Gearbox:
6-speed;
E
with constant mesh gears, gear change pedal on left side
of motorcycle.
Front/rear sprocket ratio:
15/42.
Total gear ratios:
1 st gear 15/37.
2 nd gear 17/30.
3 rd gear 20/27.
4 th gear 22/24.
5 th gear 24/23.
6 th gear 28/24.
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Drive chain from gearbox to rear wheel.
Make:DID
Type: 525 VL4.
Size: 5/8"x5/16"
Links: 104.
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. Relevant instructions and original
spare parts are available from your local dealer or
authorized workshop.
Ducati Dealer or an authorized workshop. If improperly
replaced, this component could seriously endanger your
safety and that or your passenger, and cause irreparable
damage to your motorcycle.
Important
The above gear ratios are the homologated ones
Warning
If the rear sprocket needs replacing, contact a