APRILIA Tuono V4 1100 Factory Service Station Manual page 392

Engine
crankshafts and connecting rods have been intro-
duced which are matched with each other in rela-
tion to their balancing class. The class is easily
identifiable as it is marked on the component itself.
The permitted crankshaft-connecting rod balancing class combinations are listed in the following table:
CRANKSHAFT - CONNECTING ROD BALANCING CLASSES
Crankshaft balancing classes
AA
BB
CC
DD
EE
**paired selections of mountable weights as alternative to the main selection**
ENG - 392
Combinations of weight classes for
connecting rod pair on alternator side
AA+AA
BB+BB / **AA+CC**
CC+CC / **BB+DD**
DD+DD / **CC+EE**
EE+EE
Tuono V4 1100 Factory
Combinations of weight classes for
connecting rod pair on primary drive
side
AA+AA
BB+BB / **AA+CC**
CC+CC/**DD+BB**
DD+DD/**EE+CC**
EE+EE