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Shimano Positron II 5 Speed Stem Shifter Set with Cable
VeloBase.com - Component: Shimano Positron
Shimano Positron Right Stem Shifter - Vintage Bike Parts | Pedal Pedlar
Shimano Positron II Rear Derailleur NOS | Sell - Trade: Bicycle Parts, Accessories, Ephemera | The Classic and Antique Bicycle Exchange
Shimano-Road - In picture: Derailleur POSITRON ll. To develop safe, reliable and easy-to-operate shifting systems for any cyclist, Shimano announced POSITRON in 1974. This rear derailleur is equipped with an index system