The chainring is an essential part of the bicycle. It is intended to be placed on the crankset. It must be chosen with great care. On the bike, there can be 1 or 2 or 3 chainrings. The chainring is a sprocket on which the chain links of the bicycle are placed. The diameter of the chainring attachments is an essential piece of information to know if a chainring is compatible with its crankset. This measurement is called BCD (Bolt Circle Diameter). The chainrings for vintage bikes are made of steel or aluminum.
Stronglight chainring
year : circa 1980
position : inner ring
for : 5 and 6 speed
material : aluminium
colour : aluminium
number of teeth: 45 teeth
BCD: 86 mm
number of bolts: 5
mounting distance: 50.5 mm
weight: 94 g
origin : France
condition: used item
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