9-speed. PG-970Option 1::
11-34T*. Option 2:: 11-32T*.
Recommended Chain:: PC-991,
PC-971, PC-951. Lock Ring::
*Satin Chrome. Finish:: Satin
Chrome. ...

The 11-25 sprocket set springs
from the demand from
professionals for a broader
set of ratios, suitable for
steeper climbs but also for
faster descents, but it also
stems from the demand from
amateurs who along with
compact cranks wanted ratios
which would make it possible
to push in descent without
giving up the agility in
ascent offered by the 25-tooth
sprocket, as well as 34 or 36
ones. 11-25, 12-23, 12-25,
13-26, 13-29. Ultra·Drive™ -
single sprockets - galvanized
- supplied without lockring...

. 12-13-14-15-16-17-19-21-23T.
12-13-14-15-17-19-21-23-25T.
13-14-15-16-17-19-21-23-25T.
14-15-16-17-18-19-21-23-25T.
Chain compatibility Super
narrowHG. Color : Nickel
platedWeight 358 Gr...

8-speed. PG-830Option 1::
11-32T. Option 2:: 11-30T.
Option 3:: 11-28T. Recommended
Chain:: PC-38. Lock Ring::
Steel. Finish:: Chrome Plated.
...

. The sprockets in first
position (11/12/13/14/16T) and
the 13T second. position are
always in steels with hard
chromed treatment. All the
orthers from 14 to 27T, are in
Ergal 7075/T6 that means the
best. material available in
the matket as far as
characterics of mechanica.
properties, elongation,
stress, ultimate strength.
Particular attention must be
made with the type of
manufacturing since they. are
obtained by grinding, the
parts with CNC machines in all
their parts. Stariting from a
2mm th...