Sugino Pro-D
Main Photo
Category:  Chainrings
Name:  Sugino Pro-D
Brand:  Sugino
Model:  Pro-Dynamic
Years:  N/A
Country:  Japan
Added By: Catnap on 06/22/13
Updated By: Catnap on 06/28/13
Additional Photos - click for full size
Sugino Pro-DSugino Pro-DSugino Pro-D
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Identifying MarksBCD 50.4
Tooth Count Range48, 40, 32Ring Position
Chain PitchHalf Inch (modern standard)Chain Width3/32"
General Information
Designated the Pro-D (short for Pro Dynamic) in the 1978 Sugino catalog. 

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Additional Resources
Resources:Reference & ChartsCatalogs
Brand Information(click to expand)
Sugino is a Japanese manufacturer of road and track bicycle components, founded in Nara, Japan, in 1910. It made chainsets and chainrings. It fell on hard times in the early 90s and became smaller. The company still makes bicycle components.
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